Olena-patches August 2012

olena-patches@lrde.epita.fr

2 participants
138 discussions

olena-2.0-93-g6e6efc3 scribo/binarization/sauvola_ms.hh: Change area thresholds.

by Guillaume Lazzara

--- scribo/ChangeLog | 4 +++ scribo/scribo/binarization/sauvola_ms.hh | 37 +++++++++++++++++------------ 2 files changed, 26 insertions(+), 15 deletions(-) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index 5383b57..9c1b5dd 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,5 +1,9 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * scribo/binarization/sauvola_ms.hh: Change area thresholds. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * scribo/binarization/sauvola_ms.hh: More fixes in debug. 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> diff --git a/scribo/scribo/binarization/sauvola_ms.hh b/scribo/scribo/binarization/sauvola_ms.hh index 0abef14..63ea38f 100644 --- a/scribo/scribo/binarization/sauvola_ms.hh +++ b/scribo/scribo/binarization/sauvola_ms.hh @@ -156,6 +156,8 @@ namespace scribo w_local_h = w_local, w_local_w = w_local; + std::cout << "scale " << i << " - w = " << w << " - lambda_min = " << lambda_min << " - lambda_max = " << lambda_max << std::endl; + // Make sure the window fits in the image domain. if (w_local_w >= static_cast<const unsigned>(integral_sum_sum_2.ncols())) { @@ -180,6 +182,7 @@ namespace scribo ++w_local_h; } + std::cout << "Scale " << i << " - w_h = " << w_local_h << " - w_w = " << w_local_w << " - w = " << w << std::endl; // 1st pass scribo::binarization::internal::sauvola_ms_functor< image2d<int_u8> > @@ -787,21 +790,16 @@ namespace scribo dpoint2d none(0, 0); - unsigned lambda_min_1 = w_1 / 2; - // Number of subscales. unsigned nb_subscale = 3; // Window size. - unsigned w_work = w_1 / s; // Scale 2 + unsigned w_work = w_1 * s; // Scale 2 // Subscale step. unsigned q = 2; - unsigned lambda_min_2 = lambda_min_1 / s; - unsigned lambda_max_2 = lambda_min_2 * q; - mln::util::array<I> t_ima; @@ -869,13 +867,23 @@ namespace scribo initialize(e_2, sub_ima[2]); data::fill(e_2, 0u); + // Computing optimal object area for each scale. + unsigned w_1_sq = w_1 * w_1; + unsigned q_2 = std::pow(float(q), float(2)); + unsigned min_area = (5 * w_1_sq) / (4 * q_2); + unsigned max_area = (w_1_sq + (q_2) * w_1_sq) / 4; + + + // mln::util::array<unsigned> area(sub_ima.size(), 0); + // area[2] = s * s * w_1 * w_1; + // for (unsigned i = 3; i < area.nelements(); ++i) + // area[i] = std::pow(float(q), float(i * 2 - 4)) * area[2]; + // Highest scale -> no maximum component size. { int i = sub_ima.size() - 1; - // Cast to float is needed on MacOS X. - unsigned ratio = unsigned(std::pow(float(q), float(i - 2))); // Ratio compared to e_2 t_ima[i] = internal::compute_t_n_and_e_2(sub_ima[i], e_2, - lambda_min_2 / ratio, + min_area, mln_max(unsigned), s, q, i, w_work, @@ -887,11 +895,9 @@ namespace scribo { for (int i = sub_ima.size() - 2; i > 2; --i) { - // Cast to float is needed on MacOS X. - unsigned ratio = unsigned(std::pow(float(q), float(i - 2))); // Ratio compared to e_2 t_ima[i] = internal::compute_t_n_and_e_2(sub_ima[i], e_2, - lambda_min_2 / ratio, - lambda_max_2 / ratio, + min_area, + max_area, s, q, i, w_work, integral_sum_sum_2, @@ -901,8 +907,9 @@ namespace scribo // Lowest scale -> no minimum component size. { - t_ima[2] = internal::compute_t_n_and_e_2(sub_ima[2], e_2, 0, - lambda_max_2, + t_ima[2] = internal::compute_t_n_and_e_2(sub_ima[2], e_2, + 0, + max_area, s, 1, 2, w_work, integral_sum_sum_2, K); -- 1.7.2.5

12 years, 4 months

olena-2.0-83-ga839009 sauvola_fast.cc: Cleanup and add some debug.

by Guillaume Lazzara

--- scribo/ChangeLog | 4 + scribo/sauvola_fast.cc | 234 ++++++++---------------------------------------- 2 files changed, 40 insertions(+), 198 deletions(-) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index b01a8f8..43931c6 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,5 +1,9 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * sauvola_fast.cc: Cleanup and add some debug. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * sauvola_fast.cc: Use subscaled integral image. 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> diff --git a/scribo/sauvola_fast.cc b/scribo/sauvola_fast.cc index ed4e6d4..7eb41ca 100644 --- a/scribo/sauvola_fast.cc +++ b/scribo/sauvola_fast.cc @@ -5,12 +5,14 @@ #include <mln/util/couple.hh> #include <mln/util/timer.hh> #include <scribo/binarization/internal/sauvola_formula.hh> +#include <scribo/util/init_integral_image.hh> +#include <scribo/util/integral_sum_sum2_functor.hh> namespace mln { template <typename I> - struct sauvola_fast_functor + struct sauvola_functor { const I& input; @@ -28,13 +30,12 @@ namespace mln scribo::binarization::internal::sauvola_formula formula_; int step_; - unsigned next_line1; unsigned next_line2; unsigned next_line3; unsigned offset1; unsigned offset2; - sauvola_fast_functor(const I& input_, mln_ch_value(I,bool)& bin_, double K, double R) + sauvola_functor(const I& input_, mln_ch_value(I,bool)& bin_, double K, double R) : input(input_), bin(bin_), pi(&input(input.domain().pmin())), @@ -43,7 +44,7 @@ namespace mln R_(R) { step_ = 3; - next_line1 = 2 * input.border(); + unsigned next_line1 = 2 * input.border(); next_line2 = input.delta_index(dpoint2d(+1,0)) + next_line1; next_line3 = input.delta_index(dpoint2d(+2,0)) + next_line1; @@ -51,6 +52,7 @@ namespace mln offset2 = input.delta_index(dpoint2d(+2,0)); } + // Run every 4 pixels. void exec(double mean, double stddev) { static point2d p(0,0); @@ -63,6 +65,20 @@ namespace mln *(po + offset1) = (*(pi + offset1) <= th); *(po + offset2) = (*(pi + offset2) <= th); } + +# ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG + // Store local mean + unsigned index = pi - input.buffer(); + + internal::debug_mean.element(index) = mean * internal::mean_debug_factor; + internal::debug_stddev.element(index) = stddev * internal::stddev_debug_factor; + internal::debug_threshold.element(index) = t; + + double alpha = K * (1 - stddev / R); + internal::debug_alpham.element(index) = alpha * mean * internal::alpham_debug_factor; + internal::debug_alphacond.element(index) = (stddev < (alpha * mean / 2.)); +# endif // ! SCRIBO_LOCAL_THRESHOLD_DEBUG + } void end_of_row(int) @@ -80,213 +96,34 @@ namespace mln - - template <typename I, typename J> - void - init_integral_3(const Image<I>& input_, - Image<J>& integral_sum_sum_2_) - { - trace::entering("subsampling::impl::integral_3"); - - const unsigned scale = 3; - - const I& input = exact(input_); - J& integral_sum_sum_2 = exact(integral_sum_sum_2_); - - box<mln_site(I)> - output_domain = mln::make::box2d((input.nrows() + scale - 1) / scale, - (input.ncols() + scale - 1) / scale); - - mln_precondition(input.is_valid()); - mln_precondition(input.domain().pmin() == literal::origin); - mln_precondition(scale > 1); - - typedef mln_value(I) V; - typedef mln_sum(V) S; - typedef mln_value(J) V2; - typedef mln_site(I) P; - - integral_sum_sum_2.init_(output_domain, input.border()); - V2* p_integ = integral_sum_sum_2.buffer(); - - const int up = integral_sum_sum_2.delta_index(dpoint2d(-1, 0)); - - const unsigned nrows = 3 * integral_sum_sum_2.nrows(); - const unsigned ncols = 3 * integral_sum_sum_2.ncols(); - - unsigned row = 0; - - unsigned b_offset = integral_sum_sum_2.delta_index(dpoint2d(input.border(), - input.border())); - p_integ += b_offset; - { - S h_sum = 0, h_sum_2 = 0; - const V* ptr1 = & input.at_(row, 0); - const V* ptr2 = & input.at_(row + 1, 0); - const V* ptr3 = & input.at_(row + 2, 0); - for (unsigned col = 0; col < ncols; col += scale) - { - V v11 = *ptr1, v12 = *(ptr1 + 1), v13 = *(ptr1 + 2), - v21 = *ptr2, v22 = *(ptr2 + 1), v23 = *(ptr2 + 2), - v31 = *ptr3, v32 = *(ptr3 + 1), v33 = *(ptr3 + 2); - ptr1 += 3; - ptr2 += 3; - ptr3 += 3; - S local_sum = v11 + v12 + v13 - + v21 + v22 + v23 - + v31 + v32 + v33, - local_sum_2 = v11*v11 + v12*v12 + v13*v13 - + v21*v21 + v22*v22 + v23*v23 - + v31*v31 + v32*v32 + v33*v33; - - h_sum += local_sum; - h_sum_2 += local_sum_2; - - // exception - p_integ->first() = h_sum; - p_integ->second() = h_sum_2; - - p_integ += 1; - } - } - - unsigned b_next = 2 * input.border(); - - p_integ += b_next; - - for (row += scale; row < nrows; row += scale) - { - S h_sum = 0, h_sum_2 = 0; - const V* ptr1 = & input.at_(row, 0); - const V* ptr2 = & input.at_(row + 1, 0); - const V* ptr3 = & input.at_(row + 2, 0); - for (unsigned col = 0; col < ncols; col += scale) - { - V v11 = *ptr1, v12 = *(ptr1 + 1), v13 = *(ptr1 + 2), - v21 = *ptr2, v22 = *(ptr2 + 1), v23 = *(ptr2 + 2), - v31 = *ptr3, v32 = *(ptr3 + 1), v33 = *(ptr3 + 2); - ptr1 += 3; - ptr2 += 3; - ptr3 += 3; - S local_sum = v11 + v12 + v13 - + v21 + v22 + v23 - + v31 + v32 + v33, - local_sum_2 = v11*v11 + v12*v12 + v13*v13 - + v21*v21 + v22*v22 + v23*v23 - + v31*v31 + v32*v32 + v33*v33; - - h_sum += local_sum; - h_sum_2 += local_sum_2; - - p_integ->first() = h_sum + (p_integ + up)->first(); - p_integ->second() = h_sum_2 + (p_integ + up)->second(); - - p_integ += 1; - } - - p_integ += b_next; - } - - trace::exiting("subsampling::impl::integral_3"); - } - - - - template <typename I, typename J> - void - init_integral(const Image<I>& input_, - Image<J>& integral_sum_sum_2_) - { - trace::entering("subsampling::impl::integral_3"); - - const I& input = exact(input_); - J& integral_sum_sum_2 = exact(integral_sum_sum_2_); - - mln_precondition(input.is_valid()); - mln_precondition(input.domain().pmin() == literal::origin); - - typedef mln_value(I) V; - typedef mln_sum(V) S; - typedef mln_value(J) V2; - typedef mln_site(I) P; - - initialize(integral_sum_sum_2, input); - V2* p_integ = integral_sum_sum_2.buffer(); - - const int up = input.delta_index(dpoint2d(-1, 0)); - - const unsigned nrows = input.domain().nrows(); - const unsigned ncols = input.domain().ncols(); - - unsigned row = 0; - - unsigned b_offset = input.delta_index(dpoint2d(input.border(), - input.border())); - p_integ += b_offset; - { - S h_sum = 0, h_sum_2 = 0; - const V* ptr1 = & input.at_(row, 0); - for (unsigned col = 0; col < ncols; ++col) - { - V v = *ptr1++; - - h_sum += v; - h_sum_2 += v * v; - - // exception - p_integ->first() = h_sum; - p_integ->second() = h_sum_2; - - ++p_integ; - } - } - - unsigned b_next = 2 * input.border(); - - p_integ += b_next; - - for (row += 1; row < nrows; ++row) - { - S h_sum = 0, h_sum_2 = 0; - const V* ptr1 = & input.at_(row, 0); - for (unsigned col = 0; col < ncols; ++col) - { - V v = *ptr1++; - - h_sum += v; - h_sum_2 += v * v; - - p_integ->first() = h_sum + (p_integ + up)->first(); - p_integ->second() = h_sum_2 + (p_integ + up)->second(); - - ++p_integ; - } - - p_integ += b_next; - } - - trace::exiting("subsampling::impl::integral_3"); - } - - - image2d<bool> sauvola_fast(const image2d<value::int_u8>& input, unsigned win) { util::timer t; t.start(); - image2d<util::couple<double,double> > integral; - init_integral_3(input, integral); - // image2d<value::int_u8> sub = scribo::subsampling::integral(input, 3, integral); + scribo::util::integral_sum_sum2_functor<value::int_u8, double> fi; + image2d<util::couple<double,double> > + integral = scribo::util::init_integral_image(input, 3, fi); t.stop(); std::cout << "image integrale - " << t << std::endl; +# ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG + initialize(internal::debug_mean, input); + initialize(internal::debug_stddev, input); + + initialize(internal::debug_threshold, input); + initialize(internal::debug_alpham, input); + initialize(internal::debug_alphacond, input); +# endif // ! SCRIBO_LOCAL_THRESHOLD_DEBUG + t.restart(); image2d<bool> output; initialize(output, input); - sauvola_fast_functor<image2d<value::int_u8> > f(input, output, SCRIBO_DEFAULT_SAUVOLA_K, SCRIBO_DEFAULT_SAUVOLA_R); + sauvola_functor<image2d<value::int_u8> > f(input, output, + SCRIBO_DEFAULT_SAUVOLA_K, + SCRIBO_DEFAULT_SAUVOLA_R); scribo::canvas::integral_browsing(integral, 1, win / 3, win / 3, 3, f); t.stop(); std::cout << "Binarization - " << t << std::endl; @@ -314,3 +151,4 @@ int main(int argc, char *argv[]) io::pbm::save(output, argv[3]); } + -- 1.7.2.5

12 years, 4 months

olena-2.0-80-gb1d52c9 sauvola_fast.cc: New implementation.

by Guillaume Lazzara

--- scribo/ChangeLog | 4 + scribo/sauvola_fast.cc | 175 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 179 insertions(+), 0 deletions(-) create mode 100644 scribo/sauvola_fast.cc diff --git a/scribo/ChangeLog b/scribo/ChangeLog index 8b2cae5..5d4003e 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,5 +1,9 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * sauvola_fast.cc: New implementation. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * scribo/binarization/sauvola_threshold.hh: Add some debug. 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> diff --git a/scribo/sauvola_fast.cc b/scribo/sauvola_fast.cc new file mode 100644 index 0000000..8018135 --- /dev/null +++ b/scribo/sauvola_fast.cc @@ -0,0 +1,175 @@ +#include <mln/core/image/image2d.hh> +#include <scribo/canvas/integral_browsing.hh> +#include <mln/io/pgm/load.hh> +#include <mln/io/pbm/save.hh> +#include <mln/util/couple.hh> +#include <mln/util/timer.hh> +#include <scribo/binarization/internal/sauvola_formula.hh> + +namespace mln +{ + + template <typename I> + struct sauvola_fast_functor + { + + const I& input; + typedef mln_ch_value(I,bool) bin_t; + bin_t bin; + + mln_fwd_pixter(const I) pi; + mln_fwd_pixter(bin_t) po; + + double K_; + double R_; + + scribo::binarization::internal::sauvola_formula formula_; + + unsigned count_; + + sauvola_fast_functor(const I& input_, mln_ch_value(I,bool)& bin_, double K, double R) + : input(input_), + bin(bin_), + pi(input), + po(bin), + K_(K), + R_(R) + { + pi.start(); + po.start(); + count_ = 0; + } + + void exec(double mean, double stddev) + { + static point2d p(0,0); + po.val() = (pi.val() <= formula_(p, mean, stddev, K_, R_)); + + pi.next(); // next pixel + po.next(); // next pixel + + ++count_; + } + + void finalize() + { + std::cout << input.domain().nsites() << " - " << input.domain().nrows() * input.domain().ncols() << " - " << count_ << std::endl; + } + + }; + + + + + template <typename I, typename J> + void + init_integral(const Image<I>& input_, + Image<J>& integral_sum_sum_2_) + { + trace::entering("subsampling::impl::integral_3"); + + const I& input = exact(input_); + J& integral_sum_sum_2 = exact(integral_sum_sum_2_); + + mln_precondition(input.is_valid()); + mln_precondition(input.domain().pmin() == literal::origin); + + typedef mln_value(I) V; + typedef mln_sum(V) S; + typedef mln_value(J) V2; + typedef mln_site(I) P; + + initialize(integral_sum_sum_2, input); + V2* p_integ = integral_sum_sum_2.buffer(); + + const int up = input.delta_index(dpoint2d(-1, 0)); + + const unsigned nrows = input.domain().nrows(); + const unsigned ncols = input.domain().ncols(); + + unsigned row = 0; + + unsigned b_offset = input.delta_index(dpoint2d(input.border(), + input.border())); + p_integ += b_offset; + { + S h_sum = 0, h_sum_2 = 0; + const V* ptr1 = & input.at_(row, 0); + for (unsigned col = 0; col < ncols; ++col) + { + V v = *ptr1++; + + h_sum += v; + h_sum_2 += v * v; + + // exception + p_integ->first() = h_sum; + p_integ->second() = h_sum_2; + + ++p_integ; + } + } + + unsigned b_next = 2 * input.border(); + + p_integ += b_next; + + for (row += 1; row < nrows; ++row) + { + S h_sum = 0, h_sum_2 = 0; + const V* ptr1 = & input.at_(row, 0); + for (unsigned col = 0; col < ncols; ++col) + { + V v = *ptr1++; + + h_sum += v; + h_sum_2 += v * v; + + p_integ->first() = h_sum + (p_integ + up)->first(); + p_integ->second() = h_sum_2 + (p_integ + up)->second(); + + ++p_integ; + } + + p_integ += b_next; + } + + trace::exiting("subsampling::impl::integral_3"); + } + + + + image2d<bool> + sauvola_fast(const image2d<value::int_u8>& input, unsigned win) + { + image2d<util::couple<double,double> > integral; + init_integral(input, integral); + + image2d<bool> output; + initialize(output, input); + sauvola_fast_functor<image2d<value::int_u8> > f(input, output, SCRIBO_DEFAULT_SAUVOLA_K, SCRIBO_DEFAULT_SAUVOLA_R); + scribo::canvas::integral_browsing(integral, 1, win, win, 1, f); + + return f.bin; + } + +} + + +int main(int argc, char *argv[]) +{ + using namespace mln; + + image2d<value::int_u8> input; + io::pgm::load(input, argv[1]); + + unsigned win = atoi(argv[2]); + + util::timer t; + t.start(); + image2d<bool> output = sauvola_fast(input, win); + t.stop(); + std::cout << t << std::endl; + + io::pbm::save(output, argv[3]); +} -- 1.7.2.5

12 years, 4 months

olena-2.0-79-ga8f83ef z/sauvola_ms_rv/dump_color_sign.cc: New.

by Guillaume Lazzara

--- scribo/sandbox/ChangeLog | 4 ++ scribo/sandbox/z/sauvola_ms_rv/dump_color_sign.cc | 52 +++++++++++++++++++++ 2 files changed, 56 insertions(+), 0 deletions(-) create mode 100644 scribo/sandbox/z/sauvola_ms_rv/dump_color_sign.cc diff --git a/scribo/sandbox/ChangeLog b/scribo/sandbox/ChangeLog index 92abdb1..2c0068f 100644 --- a/scribo/sandbox/ChangeLog +++ b/scribo/sandbox/ChangeLog @@ -1,5 +1,9 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * z/sauvola_ms_rv/dump_color_sign.cc: New. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + Add test images. * z/sauvola_ms_rv/img/001.pgm, diff --git a/scribo/sandbox/z/sauvola_ms_rv/dump_color_sign.cc b/scribo/sandbox/z/sauvola_ms_rv/dump_color_sign.cc new file mode 100644 index 0000000..6ea6ad8 --- /dev/null +++ b/scribo/sandbox/z/sauvola_ms_rv/dump_color_sign.cc @@ -0,0 +1,52 @@ +#include <mln/core/concept/function.hh> +#include <mln/core/image/image2d.hh> +#include <mln/value/rgb8.hh> +#include <mln/io/dump/load.hh> +#include <mln/io/ppm/save.hh> +#include <mln/data/transform.hh> +#include <mln/data/stretch.hh> +#include <mln/arith/minus.hh> + +namespace mln +{ + + struct color_diff : Function_v2v<color_diff> + { + typedef value::rgb8 result; + + value::rgb8 operator()(const int& v) const + { + int v_d2 = std::abs(v) * 0.0001; + + if (v < 0) + return value::rgb8(128 + v_d2, v_d2, v_d2); + else if (v > 0) + return value::rgb8(v_d2, 128 + v_d2, v_d2); + else + return value::rgb8(255, 255, 255); + } + }; + +} + + +int main(int argc, char *argv[]) +{ + using namespace mln; + + + if (argc != 3) + { + std::cout << "Usage: " << argv[0] << " in.dump out.ppm" << std::endl; + return 1; + } + + image2d<double> input; + + io::dump::load(input, argv[1]); + + color_diff f; + image2d<value::rgb8> result = data::transform(input, f); + + io::ppm::save(result, argv[2]); +} -- 1.7.2.5

12 years, 4 months

olena-2.0-77-ge375d14 z/sauvola_ms_rv/skewness/skewness2.cc: Retrieve skewness debug image.

by Guillaume Lazzara

--- scribo/sandbox/ChangeLog | 5 +++++ .../sandbox/z/sauvola_ms_rv/skewness/skewness2.cc | 2 ++ 2 files changed, 7 insertions(+), 0 deletions(-) diff --git a/scribo/sandbox/ChangeLog b/scribo/sandbox/ChangeLog index ba8672b..67fe4a3 100644 --- a/scribo/sandbox/ChangeLog +++ b/scribo/sandbox/ChangeLog @@ -1,5 +1,10 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * z/sauvola_ms_rv/skewness/skewness2.cc: Retrieve skewness debug + image. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * z/sauvola_ms_rv/skewness/skewness2.cc: Fix calls to sauvola. 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> diff --git a/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc b/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc index 9b77a99..331575f 100644 --- a/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc +++ b/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc @@ -32,6 +32,7 @@ #include "integral_browsing_rv.hh" mln::image2d<bool> skewness_pbm; +mln::image2d<double> skewness_d; std::string prefix; @@ -197,6 +198,7 @@ int main(int argc, char *argv[]) scribo::canvas::integral_browsing_rv(integral_sum_sum_2_sum_3, skewness_win_size, skewness_win_size, f); skewness_pbm = f.skewness_; + skewness_d = f.skewness_d_; t.stop(); std::cout << "invert on skewness - " << t << std::endl; -- 1.7.2.5

12 years, 4 months

olena-2.0-76-ga987daa scribo/binarization/sauvola_threshold.hh: Add some debug.

by Guillaume Lazzara

--- scribo/ChangeLog | 4 ++++ scribo/scribo/binarization/sauvola_threshold.hh | 6 +++++- 2 files changed, 9 insertions(+), 1 deletions(-) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index 6c79022..8b2cae5 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,5 +1,9 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * scribo/binarization/sauvola_threshold.hh: Add some debug. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + Compute Sauvola on documents with light text and dark background. * scribo/binarization/internal/compute_local_threshold.hh, diff --git a/scribo/scribo/binarization/sauvola_threshold.hh b/scribo/scribo/binarization/sauvola_threshold.hh index df46e95..7950c13 100644 --- a/scribo/scribo/binarization/sauvola_threshold.hh +++ b/scribo/scribo/binarization/sauvola_threshold.hh @@ -44,7 +44,7 @@ # include <scribo/binarization/internal/compute_local_threshold.hh> # include <scribo/binarization/internal/sauvola_formula.hh> - +extern std::string prefix; namespace scribo { @@ -130,6 +130,7 @@ namespace scribo # ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG initialize(internal::debug_mean, input); initialize(internal::debug_stddev, input); + initialize(internal::debug_threshold, input); initialize(internal::debug_alpham, input); initialize(internal::debug_alphacond, input); @@ -262,6 +263,9 @@ namespace scribo simple = init_integral_image(input, scribo::internal::identity_), squared = init_integral_image(input, scribo::internal::square_); + io::dump::save(simple, prefix + "simple.dump"); + io::dump::save(squared, prefix + "squared.dump"); + return sauvola_threshold(input, window_size, K, simple, squared); } -- 1.7.2.5

12 years, 4 months

olena-2.0-75-gb09fb77 z/sauvola_ms_rv/skewness/skewness2.cc: Fix calls to sauvola.

by Guillaume Lazzara

--- scribo/sandbox/ChangeLog | 4 ++ .../sandbox/z/sauvola_ms_rv/skewness/skewness2.cc | 31 +++++++++++++------- 2 files changed, 24 insertions(+), 11 deletions(-) diff --git a/scribo/sandbox/ChangeLog b/scribo/sandbox/ChangeLog index 446cae0..ba8672b 100644 --- a/scribo/sandbox/ChangeLog +++ b/scribo/sandbox/ChangeLog @@ -1,5 +1,9 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * z/sauvola_ms_rv/skewness/skewness2.cc: Fix calls to sauvola. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + Add new tools. * z/sauvola_ms_rv/pgm_color_diff.cc, diff --git a/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc b/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc index 043e0ad..9b77a99 100644 --- a/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc +++ b/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc @@ -26,9 +26,9 @@ #include <mln/arith/revert.hh> #include <mln/util/timer.hh> -mln::image2d<double> skewness; #include <scribo/binarization/sauvola_ms.hh> +#include <scribo/binarization/sauvola.hh> #include "integral_browsing_rv.hh" mln::image2d<bool> skewness_pbm; @@ -131,7 +131,8 @@ namespace mln struct invert_on_skewness { I input; - image2d<double> skewness_; + image2d<bool> skewness_; + image2d<double> skewness_d_; mln_fwd_pixter(I) pxl; invert_on_skewness(const I& input_) @@ -140,14 +141,16 @@ namespace mln { pxl.start(); initialize(skewness_, input); + initialize(skewness_d_, input); } void exec(double skewness) { - skewness_.element(pxl.offset()) = skewness; + skewness_d_.element(pxl.offset()) = skewness; + skewness_.element(pxl.offset()) = (skewness <= 1000.); - if (skewness > 1000.) - pxl.val() = 255 - pxl.val(); + // if (skewness > 1000.) + // pxl.val() = 255 - pxl.val(); pxl.next(); // next pixel } @@ -163,9 +166,9 @@ int main(int argc, char *argv[]) { using namespace mln; - if (argc != 4) + if (argc != 5) { - std::cerr << "Usage: " << argv[0] << " <input.pgm> <prefix> <win_size>" << std::endl; + std::cerr << "Usage: " << argv[0] << " <input.pgm> <prefix> <skewness_win_size> <sauvola_win_size>" << std::endl; return 1; } @@ -179,7 +182,8 @@ int main(int argc, char *argv[]) prefix = argv[2]; - int win_size = atoi(argv[3]); + int skewness_win_size = atoi(argv[3]); + int sauvola_win_size = atoi(argv[4]); t.stop(); std::cout << "Initialization - " << t << std::endl; @@ -190,16 +194,21 @@ int main(int argc, char *argv[]) scribo::integral_rv(input, integral_sum_sum_2_sum_3); invert_on_skewness<image2d<value::int_u8> > f(input); - scribo::canvas::integral_browsing_rv(integral_sum_sum_2_sum_3, win_size, win_size, f); + scribo::canvas::integral_browsing_rv(integral_sum_sum_2_sum_3, skewness_win_size, skewness_win_size, f); + + skewness_pbm = f.skewness_; t.stop(); std::cout << "invert on skewness - " << t << std::endl; io::dump::save(f.skewness_, prefix + "skewness.dump"); + io::dump::save(f.skewness_d_, prefix + "skewness_d.dump"); t.restart(); - image2d<bool> bin = scribo::binarization::sauvola_ms(f.input, 101, 2); - std::cout << "sauvola_ms - " << t << std::endl; +// image2d<bool> bin = scribo::binarization::sauvola_ms(input, 101, 2); +// std::cout << "sauvola_ms - " << t << std::endl; + image2d<bool> bin = scribo::binarization::sauvola(input, sauvola_win_size); + std::cout << "sauvola - " << t << std::endl; std::cout << "Total time : " << tt << std::endl; -- 1.7.2.5

12 years, 4 months

olena-2.0-74-g9be09ea Compute Sauvola on documents with light text and dark background.

by Guillaume Lazzara

* scribo/binarization/internal/compute_local_threshold.hh, * scribo/binarization/internal/first_pass_functor.hh, * scribo/binarization/internal/sauvola_formula.hh, * scribo/binarization/local_threshold.hh: Update formula. --- scribo/ChangeLog | 9 ++++++ .../internal/compute_local_threshold.hh | 15 +++++++++- .../binarization/internal/first_pass_functor.hh | 2 +- .../binarization/internal/sauvola_formula.hh | 22 +++++++++++----- scribo/scribo/binarization/local_threshold.hh | 27 +++++++++++++------ 5 files changed, 56 insertions(+), 19 deletions(-) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index f8d7491..6c79022 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,3 +1,12 @@ +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + + Compute Sauvola on documents with light text and dark background. + + * scribo/binarization/internal/compute_local_threshold.hh, + * scribo/binarization/internal/first_pass_functor.hh, + * scribo/binarization/internal/sauvola_formula.hh, + * scribo/binarization/local_threshold.hh: Update formula. + 2012-05-10 Guillaume Lazzara <z(a)lrde.epita.fr> Improve option parser. diff --git a/scribo/scribo/binarization/internal/compute_local_threshold.hh b/scribo/scribo/binarization/internal/compute_local_threshold.hh index 147ef0f..4c25e17 100644 --- a/scribo/scribo/binarization/internal/compute_local_threshold.hh +++ b/scribo/scribo/binarization/internal/compute_local_threshold.hh @@ -42,7 +42,8 @@ -// extern mln::image2d<double> skewness; +extern mln::image2d<double> skewness; +extern mln::image2d<bool> skewness_pbm; namespace scribo { @@ -117,6 +118,11 @@ namespace scribo - simple.at_(row_max, col_min) - simple.at_(row_min, col_max)); + // if (!skewness_pbm(p)) + // { + // m_x_y_tmp = 255 * wh - m_x_y_tmp; + // } + double m_x_y = m_x_y_tmp / wh; # ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG @@ -130,6 +136,11 @@ namespace scribo - squared.at_(row_max, col_min) - squared.at_(row_min, col_max)); + // if (!skewness_pbm(p)) + // { + // s_x_y_tmp = std::pow(255, 2) * wh - s_x_y_tmp; + // } + double s_x_y = std::sqrt((s_x_y_tmp - (m_x_y_tmp * m_x_y_tmp) / wh) / (wh - 1.f)); # ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG @@ -140,7 +151,7 @@ namespace scribo // Thresholding. // skewness_ = skewness(p); // b = (p == point2d(5,5)); - double t_x_y = formula(m_x_y, s_x_y, K, R); + double t_x_y = formula(p, m_x_y, s_x_y, K, R); # ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG double alpha = K * (1 - s_x_y / R); diff --git a/scribo/scribo/binarization/internal/first_pass_functor.hh b/scribo/scribo/binarization/internal/first_pass_functor.hh index 8da401b..f0ae5a9 100644 --- a/scribo/scribo/binarization/internal/first_pass_functor.hh +++ b/scribo/scribo/binarization/internal/first_pass_functor.hh @@ -132,7 +132,7 @@ namespace scribo unsigned p = pxl.offset(); value::int_u8 t_p; - mln::convert::from_to(formula_(mean, stddev, K_, R_), + mln::convert::from_to(formula_(input.point_at_index(p), mean, stddev, K_, R_), t_p); msk.element(p) = input.element(p) < t_p; diff --git a/scribo/scribo/binarization/internal/sauvola_formula.hh b/scribo/scribo/binarization/internal/sauvola_formula.hh index adbef13..e010e85 100644 --- a/scribo/scribo/binarization/internal/sauvola_formula.hh +++ b/scribo/scribo/binarization/internal/sauvola_formula.hh @@ -46,6 +46,10 @@ # define SCRIBO_DEFAULT_SAUVOLA_R 128 +#include <mln/core/alias/point2d.hh> + +extern mln::image2d<bool> skewness_pbm; + namespace scribo { @@ -55,6 +59,8 @@ namespace scribo namespace internal { + using namespace mln; + struct sauvola_formula { @@ -70,13 +76,13 @@ namespace scribo \return A threshold. */ - double operator()(const double m_x_y, const double s_x_y, + double operator()(const point2d& p, const double m_x_y, const double s_x_y, const double K, const double R) const; /*! \overload K = 0.34 and R = 128. */ - double operator()(const double m_x_y, const double s_x_y) const; + double operator()(const point2d& p, const double m_x_y, const double s_x_y) const; }; @@ -88,7 +94,7 @@ namespace scribo inline double - sauvola_formula::operator()(const double m_x_y, const double s_x_y, + sauvola_formula::operator()(const point2d& p, const double m_x_y, const double s_x_y, const double K, const double R) const { // if (b) @@ -98,15 +104,17 @@ namespace scribo // if (skewness_ > 0) // if (new_t != old_t) // std::cout << skewness_ << " - " << new_t << " vs " << old_t << std::endl; - - return m_x_y * (1.0 + K * ((s_x_y / R) - 1.0)); + if (skewness_pbm(p)) + return m_x_y * (1.0 + K * ((s_x_y / R) - 1.0)); + else + return (255 - m_x_y) * (1.0 + K * ((s_x_y / R) - 1.0)); } inline double - sauvola_formula::operator()(const double m_x_y, const double s_x_y) const + sauvola_formula::operator()(const point2d& p, const double m_x_y, const double s_x_y) const { - return (*this)(m_x_y, s_x_y, + return (*this)(p, m_x_y, s_x_y, SCRIBO_DEFAULT_SAUVOLA_K, SCRIBO_DEFAULT_SAUVOLA_R); } diff --git a/scribo/scribo/binarization/local_threshold.hh b/scribo/scribo/binarization/local_threshold.hh index 9d116ed..ab589e2 100644 --- a/scribo/scribo/binarization/local_threshold.hh +++ b/scribo/scribo/binarization/local_threshold.hh @@ -34,12 +34,13 @@ /// /// \brief Binarize an image using a threshold image. +extern mln::image2d<bool> skewness_pbm; + namespace scribo { using namespace mln; - namespace binarization { @@ -110,8 +111,10 @@ namespace scribo mln_piter(I) p(input.domain()); for_all(p) - output(p) = (input(p) <= threshold(p)); - + if (skewness_pbm(p)) + output(p) = (input(p) <= threshold(p)); + else + output(p) = ((255 - input(p)) <= threshold(p)); trace::exiting("scribo::binarization::impl::generic::local_threshold"); return output; @@ -132,6 +135,8 @@ namespace scribo const I& input = exact(input_); const T& threshold = exact(threshold_); + border::resize(::skewness_pbm, input.border()); + typedef mln_ch_value(I, bool) O; O output; initialize(output, input); @@ -139,8 +144,12 @@ namespace scribo mln_pixter(const I) pi(input); mln_pixter(const T) pt(threshold); mln_pixter(O) po(output); + for_all_3(pi, pt, po) - po.val() = pi.val() <= pt.val(); + if (skewness_pbm.element(pi.offset())) + po.val() = (pi.val() <= pt.val()); + else + po.val() = ((255 - pi.val()) <= pt.val()); trace::exiting("scribo::binarization::impl::generic::local_threshold_fastest"); return output; @@ -159,7 +168,7 @@ namespace scribo template <typename I, typename T> mln_ch_value(I, bool) - local_threshold_dispatch(trait::image::value_alignment::any, + local_threshold_dispatch(trait::image::speed::any, trait::image::speed::any, const Image<I>& input, const Image<T>& threshold) { @@ -169,7 +178,7 @@ namespace scribo template <typename I, typename T> mln_ch_value(I, bool) - local_threshold_dispatch(trait::image::value_alignment::with_grid, + local_threshold_dispatch(trait::image::speed::fastest, trait::image::speed::fastest, const Image<I>& input, const Image<T>& threshold) { @@ -181,9 +190,9 @@ namespace scribo local_threshold_dispatch(const Image<I>& input, const Image<T>& threshold) { - return local_threshold_dispatch(mln_trait_image_value_alignment(I)(), - mln_trait_image_speed(I)(), - exact(input), exact(threshold)); + return local_threshold_dispatch(mln_trait_image_speed(I)(), + mln_trait_image_speed(T)(), + input, threshold); } } // end of namespace scribo::binarization::internal -- 1.7.2.5

12 years, 4 months

olena-2.0-73-g241d1ff Add new tools.

by Guillaume Lazzara

* z/sauvola_ms_rv/pgm_color_diff.cc, * z/sauvola_ms_rv/pgm_local_mean.cc, * z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc: New. --- scribo/sandbox/ChangeLog | 8 +++ scribo/sandbox/z/sauvola_ms_rv/pgm_color_diff.cc | 60 ++++++++++++++++++++ scribo/sandbox/z/sauvola_ms_rv/pgm_local_mean.cc | 29 ++++++++++ .../z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc | 24 ++++++++ 4 files changed, 121 insertions(+), 0 deletions(-) create mode 100644 scribo/sandbox/z/sauvola_ms_rv/pgm_color_diff.cc create mode 100644 scribo/sandbox/z/sauvola_ms_rv/pgm_local_mean.cc create mode 100644 scribo/sandbox/z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc diff --git a/scribo/sandbox/ChangeLog b/scribo/sandbox/ChangeLog index 8cfe592..446cae0 100644 --- a/scribo/sandbox/ChangeLog +++ b/scribo/sandbox/ChangeLog @@ -1,5 +1,13 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + Add new tools. + + * z/sauvola_ms_rv/pgm_color_diff.cc, + * z/sauvola_ms_rv/pgm_local_mean.cc, + * z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc: New. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + Rename skewness directory and share code between implementations. * z/skewness/skewness.cc, diff --git a/scribo/sandbox/z/sauvola_ms_rv/pgm_color_diff.cc b/scribo/sandbox/z/sauvola_ms_rv/pgm_color_diff.cc new file mode 100644 index 0000000..7474c46 --- /dev/null +++ b/scribo/sandbox/z/sauvola_ms_rv/pgm_color_diff.cc @@ -0,0 +1,60 @@ +#include <mln/core/concept/function.hh> +#include <mln/core/image/image2d.hh> +#include <mln/value/rgb8.hh> +#include <mln/value/int_u8.hh> +#include <mln/io/pgm/load.hh> +#include <mln/io/ppm/save.hh> +#include <mln/data/transform.hh> +#include <mln/arith/minus.hh> + +namespace mln +{ + + struct color_diff : Function_v2v<color_diff> + { + typedef value::rgb8 result; + + color_diff(int threshold) : threshold_(threshold) {} + + value::rgb8 operator()(const int& v) const + { + int v_d2 = std::abs(v / 2); + + if (v >= -threshold_ && v <= threshold_) + return value::rgb8(255, 255, 255); + else if (v > threshold_) + return value::rgb8(v_d2, 128 + v_d2, v_d2); + else + return value::rgb8(128 + v_d2, v_d2, v_d2); + } + + + int threshold_; + }; + +} + + +int main(int argc, char *argv[]) +{ + using namespace mln; + + + if (argc != 5) + { + std::cout << "Usage: " << argv[0] << " in.pgm ref.pgm threshold out.ppm" << std::endl; + return 1; + } + + image2d<value::int_u8> input, ref; + + io::pgm::load(input, argv[1]); + io::pgm::load(ref, argv[2]); + + image2d<int> diff = input - ref; + + color_diff f(atoi(argv[3])); + image2d<value::rgb8> result = data::transform(diff, f); + + io::ppm::save(result, argv[4]); +} diff --git a/scribo/sandbox/z/sauvola_ms_rv/pgm_local_mean.cc b/scribo/sandbox/z/sauvola_ms_rv/pgm_local_mean.cc new file mode 100644 index 0000000..06c51e9 --- /dev/null +++ b/scribo/sandbox/z/sauvola_ms_rv/pgm_local_mean.cc @@ -0,0 +1,29 @@ +#include <mln/core/image/image2d.hh> +#include <mln/io/pgm/load.hh> +#include <mln/io/pgm/save.hh> +#include <mln/value/int_u8.hh> +#include <mln/data/compute_in_window.hh> +#include <mln/accu/stat/mean.hh> +#include <mln/win/rectangle2d.hh> +#include <mln/data/convert.hh> + +int main(int argc, char *argv[]) +{ + using namespace mln; + + if (argc != 4) + { + std::cout << "Usage: " << argv[0] << " in.pgm win_size out.pgm" << std::endl; + return 1; + } + + unsigned win_size = atoi(argv[2]); + win::rectangle2d win(win_size, win_size); + typedef value::int_u8 V; + image2d<V> input; + io::pgm::load(input, argv[1]); + + image2d<float> mean = data::compute_in_window(accu::stat::mean<V>(), input, win); + + io::pgm::save(data::convert(value::int_u8(), mean), argv[3]); +} diff --git a/scribo/sandbox/z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc b/scribo/sandbox/z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc new file mode 100644 index 0000000..f7b66b7 --- /dev/null +++ b/scribo/sandbox/z/sauvola_ms_rv/ppm_influence_zone_geodesic.cc @@ -0,0 +1,24 @@ +#include <mln/core/image/image2d.hh> +#include <mln/core/alias/neighb2d.hh> +#include <mln/value/rgb8.hh> +#include <mln/transform/influence_zone_geodesic.hh> +#include <mln/io/ppm/all.hh> + + +int main(int argc, char *argv[]) +{ + using namespace mln; + + if (argc != 3) + { + std::cout << argv[0] << " input.ppm output.ppm" << std::endl; + return 1; + } + + image2d<value::rgb8> input; + io::ppm::load(input, argv[1]); + + image2d<value::rgb8> iz = transform::influence_zone_geodesic(input, c8()); + + io::ppm::save(iz, argv[2]); +} -- 1.7.2.5

12 years, 4 months

olena-2.0-72-ga07c8c6 Rename skewness directory and share code between implementations.

by Guillaume Lazzara

* z/skewness/skewness.cc, * z/skewness/skewness2.cc: Move... * z/sauvola_ms_rv/skewness.cc, * z/sauvola_ms_rv/skewness/skewness2.cc: ... Here. * z/sauvola_ms_rv/skewness/integral_browsing_rv.hh: Share code between the two implementations. --- scribo/sandbox/ChangeLog | 13 + .../z/{skewness => sauvola_ms_rv}/skewness.cc | 0 .../skewness/integral_browsing_rv.hh} | 135 ++++++------ .../sandbox/z/sauvola_ms_rv/skewness/skewness2.cc | 230 ++++++++++++++++++++ scribo/sandbox/z/skewness/skewness2.cc | 154 ------------- 5 files changed, 314 insertions(+), 218 deletions(-) rename scribo/sandbox/z/{skewness => sauvola_ms_rv}/skewness.cc (100%) copy scribo/{scribo/canvas/integral_browsing.hh => sandbox/z/sauvola_ms_rv/skewness/integral_browsing_rv.hh} (72%) create mode 100644 scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc delete mode 100644 scribo/sandbox/z/skewness/skewness2.cc diff --git a/scribo/sandbox/ChangeLog b/scribo/sandbox/ChangeLog index c87381c..8cfe592 100644 --- a/scribo/sandbox/ChangeLog +++ b/scribo/sandbox/ChangeLog @@ -1,5 +1,18 @@ 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + Rename skewness directory and share code between implementations. + + * z/skewness/skewness.cc, + * z/skewness/skewness2.cc: Move... + + * z/sauvola_ms_rv/skewness.cc, + * z/sauvola_ms_rv/skewness/skewness2.cc: ... Here. + + * z/sauvola_ms_rv/skewness/integral_browsing_rv.hh: Share code + between the two implementations. + +2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> + * z/skewness/skewness2.cc: New. 2012-08-23 Guillaume Lazzara <z(a)lrde.epita.fr> diff --git a/scribo/sandbox/z/skewness/skewness.cc b/scribo/sandbox/z/sauvola_ms_rv/skewness.cc similarity index 100% rename from scribo/sandbox/z/skewness/skewness.cc rename to scribo/sandbox/z/sauvola_ms_rv/skewness.cc diff --git a/scribo/scribo/canvas/integral_browsing.hh b/scribo/sandbox/z/sauvola_ms_rv/skewness/integral_browsing_rv.hh similarity index 72% copy from scribo/scribo/canvas/integral_browsing.hh copy to scribo/sandbox/z/sauvola_ms_rv/skewness/integral_browsing_rv.hh index 0ec3d83..79d5e34 100644 --- a/scribo/scribo/canvas/integral_browsing.hh +++ b/scribo/sandbox/z/sauvola_ms_rv/skewness/integral_browsing_rv.hh @@ -25,8 +25,8 @@ // executable file might be covered by the GNU General Public License. -#ifndef SCRIBO_CANVAS_INTEGRAL_BROWSING_HH -# define SCRIBO_CANVAS_INTEGRAL_BROWSING_HH +#ifndef SCRIBO_CANVAS_INTEGRAL_BROWSING_RV_HH +# define SCRIBO_CANVAS_INTEGRAL_BROWSING_RV_HH # include <mln/core/image/image2d.hh> # include <mln/util/couple.hh> @@ -40,10 +40,10 @@ namespace scribo template <typename F> - void integral_browsing(const image2d<mln::util::couple<double, double> >& ima, - unsigned step, - unsigned w, unsigned h, - F& functor); + void integral_browsing_rv(const image2d<mln::util::couple<double, mln::util::couple<double, double> > >& ima, + unsigned step, + unsigned w, unsigned h, + F& functor); # ifndef MLN_INCLUDE_ONLY @@ -54,19 +54,15 @@ namespace scribo inline void compute_stats(// in - double sum, double sum_2, unsigned n, + double sum, double sum_2, double sum_3, unsigned n, // out - double& mean, double& stddev) + double& skewness) { - mean = sum / n; - - // unbias version: - double num = (sum_2 - sum * sum / n); - if (num > 0) - stddev = std::sqrt(num / (n - 1)); - else - stddev = 0; + // Mean + double mean = sum / n; + // Skewness + skewness = (sum_3 - 3. * mean * sum_2) / (double) n + 2. * std::pow(mean, 3); } } // end of namespace scribo::canvas::internal @@ -75,13 +71,13 @@ namespace scribo template <typename F> - void integral_browsing(const image2d<mln::util::couple<double, double> >& ima, - unsigned step, - unsigned w, unsigned h, - unsigned s, - F& functor) + void integral_browsing_rv(const image2d<mln::util::couple<double, mln::util::couple<double, double> > >& ima, + unsigned w, unsigned h, + F& functor) { - typedef mln::util::couple<double, double> V; + unsigned step = 1; + + typedef mln::util::couple<double, mln::util::couple<double, double> > V; typedef const V* Ptr; Ptr a_ima, b_ima, c_ima, d_ima; @@ -121,9 +117,8 @@ namespace scribo b_ml_start = 0, d_ml_start = 0, b_mr_start = 0, d_mr_start = 0, b_bl_start = 0, d_bl_start = 0, b_br_start = 0, d_br = 0; - double mean, stddev; + double skewness; - unsigned s_2 = s * s; // ------------------------------- // T (top) @@ -157,10 +152,11 @@ namespace scribo { // D internal::compute_stats(d_ima->first(), - d_ima->second(), - size_tl * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_ima->second().first(), + d_ima->second().second(), + size_tl, + skewness); + functor.exec(skewness); d_ima += step; size_tl += delta_size_tl; } @@ -177,10 +173,11 @@ namespace scribo { // D - C internal::compute_stats(d_ima->first() - c_ima->first(), - d_ima->second() - c_ima->second(), - size_tc * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_ima->second().first() - c_ima->second().first(), + d_ima->second().second() - c_ima->second().second(), + size_tc, + skewness); + functor.exec(skewness); c_ima += step; d_ima += step; } @@ -192,17 +189,19 @@ namespace scribo d_ima = d_tr_start; double d_sum = d_ima->first(), - d_sum_2 = d_ima->second(); + d_sum_2 = d_ima->second().first(), + d_sum_3 = d_ima->second().second(); size_tr = size_tr_start; for (; col < ncols; col += step) { // D* - C internal::compute_stats(d_sum - c_ima->first(), - d_sum_2 - c_ima->second(), - size_tr * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_sum_2 - c_ima->second().first(), + d_sum_3 - c_ima->second().second(), + size_tr, + skewness); + functor.exec(skewness); c_ima += step; size_tr -= delta_size_tr; } @@ -249,10 +248,11 @@ namespace scribo { // D - B internal::compute_stats(d_ima->first() - b_ima->first(), - d_ima->second() - b_ima->second(), - size_ml * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_ima->second().first() - b_ima->second().first(), + d_ima->second().second() - b_ima->second().second(), + size_ml, + skewness); + functor.exec(skewness); b_ima += step; d_ima += step; size_ml += h_step; @@ -271,11 +271,12 @@ namespace scribo // D + A - B - C internal::compute_stats((d_ima->first() - b_ima->first()) + (a_ima->first() - c_ima->first()), - (d_ima->second() - b_ima->second()) + (a_ima->second() - c_ima->second()), - size_mc * s_2, - mean, stddev); + (d_ima->second().first() - b_ima->second().first()) + (a_ima->second().first() - c_ima->second().first()), + (d_ima->second().second() - b_ima->second().second()) + (a_ima->second().second() - c_ima->second().second()), + size_mc, + skewness); - functor.exec(mean, stddev); + functor.exec(skewness); a_ima += step; b_ima += step; @@ -290,16 +291,18 @@ namespace scribo d_ima = d_mr_start; double d_b_sum = d_ima->first() - b_ima->first(), - d_b_sum_2 = d_ima->second() - b_ima->second(); + d_b_sum_2 = d_ima->second().first() - b_ima->second().first(), + d_b_sum_3 = d_ima->second().second() - b_ima->second().second(); for (; col < ncols; col += step) { // D* + A - B* - C internal::compute_stats(d_b_sum + (a_ima->first() - c_ima->first()), - d_b_sum_2 + (a_ima->second() - c_ima->second()), - size_mr * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_b_sum_2 + (a_ima->second().first() - c_ima->second().first()), + d_b_sum_3 + (a_ima->second().second() - c_ima->second().second()), + size_mr, + skewness); + functor.exec(skewness); a_ima += step; c_ima += step; size_mr -= h_step; @@ -345,10 +348,11 @@ namespace scribo { // D* - B internal::compute_stats(d_ima->first() - b_ima->first(), - d_ima->second() - b_ima->second(), - size_bl * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_ima->second().first() - b_ima->second().first(), + d_ima->second().second() - b_ima->second().second(), + size_bl, + skewness); + functor.exec(skewness); b_ima += step; d_ima += step; size_bl += delta_size_bl; @@ -367,10 +371,11 @@ namespace scribo { // D* + A - B - C* internal::compute_stats((d_ima->first() - b_ima->first()) + (a_ima->first() - c_ima->first()), - (d_ima->second() - b_ima->second()) + (a_ima->second() - c_ima->second()), - size_bc * s_2, - mean, stddev); - functor.exec(mean, stddev); + (d_ima->second().first() - b_ima->second().first()) + (a_ima->second().first() - c_ima->second().first()), + (d_ima->second().second() - b_ima->second().second()) + (a_ima->second().second() - c_ima->second().second()), + size_bc, + skewness); + functor.exec(skewness); a_ima += step; b_ima += step; c_ima += step; @@ -386,16 +391,18 @@ namespace scribo d_ima = d_br; double d_b_sum = d_ima->first() - b_ima->first(), - d_b_sum_2 = d_ima->second() - b_ima->second(); + d_b_sum_2 = d_ima->second().first() - b_ima->second().first(), + d_b_sum_3 = d_ima->second().second() - b_ima->second().second(); for (; col < ncols; col += step) { // D* + A - B* - C* internal::compute_stats(d_b_sum + (a_ima->first() - c_ima->first()), - d_b_sum_2 + (a_ima->second() - c_ima->second()), - size_br * s_2, - mean, stddev); - functor.exec(mean, stddev); + d_b_sum_2 + (a_ima->second().first() - c_ima->second().first()), + d_b_sum_3 + (a_ima->second().second() - c_ima->second().second()), + size_br, + skewness); + functor.exec(skewness); a_ima += step; c_ima += step; size_br -= delta_size_br; @@ -417,4 +424,4 @@ namespace scribo } // end of namespace mln -#endif // ! SCRIBO_CANVAS_INTEGRAL_BROWSING_HH +#endif // ! SCRIBO_CANVAS_INTEGRAL_BROWSING_RV_HH diff --git a/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc b/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc new file mode 100644 index 0000000..043e0ad --- /dev/null +++ b/scribo/sandbox/z/sauvola_ms_rv/skewness/skewness2.cc @@ -0,0 +1,230 @@ +#include <mln/io/pgm/all.hh> +#include <mln/io/pbm/all.hh> +#include <mln/core/image/dmorph/image_if.hh> +#include <mln/core/image/dmorph/sub_image.hh> +#include <mln/pw/all.hh> +#include <mln/value/int_u8.hh> +#include <mln/core/image/image2d.hh> +#include <mln/core/neighb.hh> +#include <mln/win/rectangle2d.hh> +#include <mln/extension/adjust.hh> +#include <mln/border/mirror.hh> +#include <mln/extension/duplicate.hh> +#include <mln/core/alias/window2d.hh> + +#include <mln/data/convert.hh> +#include <mln/data/stretch.hh> +#include <mln/debug/println.hh> +#include <mln/data/transform.hh> +#include <mln/io/dump/save.hh> +#include <mln/accu/math/sumpow.hh> +#include <mln/accu/stat/mean.hh> +#include <mln/data/compute_in_window.hh> +#include <mln/core/var.hh> +#include <mln/data/saturate.hh> +#include <mln/fun/v2b/threshold_le.hh> +#include <mln/arith/revert.hh> +#include <mln/util/timer.hh> + +mln::image2d<double> skewness; + +#include <scribo/binarization/sauvola_ms.hh> +#include "integral_browsing_rv.hh" + +mln::image2d<bool> skewness_pbm; +std::string prefix; + + +namespace scribo +{ + using namespace mln; + + template <typename I, typename J> + void + integral_rv(const Image<I>& input_, + Image<J>& integral_sum_sum_2_sum_3_) + { + trace::entering("subsampling::impl::integral_2"); + + const unsigned scale = 1; + + const I& input = exact(input_); + J& integral_sum_sum_2_sum_3 = exact(integral_sum_sum_2_sum_3_); + + typedef mln_value(I) V; + typedef mln_sum(V) S; + typedef mln_site(I) P; + typedef mln_value(J) V2; + + mlc_bool(P::dim == 2)::check(); + mln_precondition(input.is_valid()); + mln_precondition(input.domain().pmin() == literal::origin); + + initialize(integral_sum_sum_2_sum_3, input); + V2* p_integ = integral_sum_sum_2_sum_3.buffer(); + + const int up = integral_sum_sum_2_sum_3.delta_index(dpoint2d(-1, 0)); + + const unsigned nrows = input.nrows(); + const unsigned ncols = input.ncols(); + + unsigned border_thickness = input.border(); + unsigned b_offset = integral_sum_sum_2_sum_3.delta_index(dpoint2d(border_thickness, + border_thickness)); + p_integ += b_offset; + + unsigned row = 0; + { + S h_sum = 0, h_sum_2 = 0, h_sum_3 = 0; + const V* ptr1 = & input.at_(row, 0); + for (unsigned col = 0; col < ncols; ++col) + { + V v11 = *ptr1++; + h_sum += v11; + h_sum_2 += v11 * v11; + h_sum_3 += v11 * v11 * v11; + + // exception + p_integ->first() = h_sum; + p_integ->second().first() = h_sum_2; + p_integ->second().second() = h_sum_3; + + ++p_integ; + } + } + + unsigned b_next = 2 * border_thickness; + + p_integ += b_next; + + for (row += scale; row < nrows; ++row) + { + S h_sum = 0, h_sum_2 = 0, h_sum_3 = 0; + const V* ptr1 = & input.at_(row, 0); + for (unsigned col = 0; col < ncols; ++col) + { + V v11 = *ptr1++; + h_sum += v11; + h_sum_2 += v11 * v11; + h_sum_3 += v11 * v11 * v11; + + p_integ->first() = h_sum + (p_integ + up)->first(); + p_integ->second().first() = h_sum_2 + (p_integ + up)->second().first(); + p_integ->second().second() = h_sum_3 + (p_integ + up)->second().second(); + + ++p_integ; + } + + p_integ += b_next; + } + + trace::exiting("subsampling::impl::integral_2"); + } + +} // end of namespace scribo + + +namespace mln +{ + + template <typename I> + struct invert_on_skewness + { + I input; + image2d<double> skewness_; + mln_fwd_pixter(I) pxl; + + invert_on_skewness(const I& input_) + : input(duplicate(input_)), + pxl(input) + { + pxl.start(); + initialize(skewness_, input); + } + + void exec(double skewness) + { + skewness_.element(pxl.offset()) = skewness; + + if (skewness > 1000.) + pxl.val() = 255 - pxl.val(); + + pxl.next(); // next pixel + } + + void finalize() + { + } + }; + +} + +int main(int argc, char *argv[]) +{ + using namespace mln; + + if (argc != 4) + { + std::cerr << "Usage: " << argv[0] << " <input.pgm> <prefix> <win_size>" << std::endl; + return 1; + } + + util::timer tt; + tt.start(); + util::timer t; + + t.start(); + image2d<value::int_u8> input; + io::pgm::load(input, argv[1]); + + prefix = argv[2]; + + int win_size = atoi(argv[3]); + t.stop(); + std::cout << "Initialization - " << t << std::endl; + + // invert data if skewness > 0 + t.restart(); + + image2d<util::couple<double, util::couple<double, double> > > integral_sum_sum_2_sum_3; + scribo::integral_rv(input, integral_sum_sum_2_sum_3); + + invert_on_skewness<image2d<value::int_u8> > f(input); + scribo::canvas::integral_browsing_rv(integral_sum_sum_2_sum_3, win_size, win_size, f); + + t.stop(); + std::cout << "invert on skewness - " << t << std::endl; + + io::dump::save(f.skewness_, prefix + "skewness.dump"); + + t.restart(); + image2d<bool> bin = scribo::binarization::sauvola_ms(f.input, 101, 2); + std::cout << "sauvola_ms - " << t << std::endl; + + + std::cout << "Total time : " << tt << std::endl; + // prefix += "i_"; + + // image2d<bool> bin_i = scribo::binarization::sauvola(arith::revert(input), 51); + + // prefix = argv[2]; + + io::pbm::save(bin, prefix + "bin.pbm"); + // io::pbm::save(bin_i, prefix + "bin_i.pbm"); + + // image2d<bool> out; + // initialize(out, bin); + // mln_piter_(image2d<bool>) p(out.domain()); + // for_all(p) + // if (skewness_pbm(p)) + // out(p) = bin(p); + // else + // out(p) = bin_i(p); + + // io::pbm::save(out, prefix + "output.pbm"); + + // io::dump::save(scribo::binarization::internal::debug_stddev, prefix + "stddev.dump"); + // io::dump::save(scribo::binarization::internal::debug_mean, prefix + "mean.dump"); + // io::dump::save(scribo::binarization::internal::debug_threshold, prefix + "threshold.dump"); + +} diff --git a/scribo/sandbox/z/skewness/skewness2.cc b/scribo/sandbox/z/skewness/skewness2.cc deleted file mode 100644 index 642ae3f..0000000 --- a/scribo/sandbox/z/skewness/skewness2.cc +++ /dev/null @@ -1,154 +0,0 @@ -#include <mln/io/pgm/all.hh> -#include <mln/io/pbm/all.hh> -#include <mln/core/image/dmorph/image_if.hh> -#include <mln/core/image/dmorph/sub_image.hh> -#include <mln/pw/all.hh> -#include <mln/value/int_u8.hh> -#include <mln/core/image/image2d.hh> -#include <mln/core/neighb.hh> -#include <mln/win/rectangle2d.hh> -#include <mln/extension/adjust.hh> -#include <mln/border/mirror.hh> -#include <mln/extension/duplicate.hh> -#include <mln/core/alias/window2d.hh> - -#include <mln/data/convert.hh> -#include <mln/data/stretch.hh> -#include <mln/debug/println.hh> -#include <mln/data/transform.hh> -#include <mln/io/dump/save.hh> -#include <mln/accu/math/sumpow.hh> -#include <mln/accu/stat/mean.hh> -#include <mln/data/compute_in_window.hh> -#include <mln/core/var.hh> -#include <mln/data/saturate.hh> -#include <mln/fun/v2b/threshold_le.hh> -#include <mln/arith/revert.hh> -#include <mln/util/timer.hh> - -mln::image2d<double> skewness; - -#include <scribo/binarization/sauvola_ms.hh> - -mln::image2d<bool> skewness_pbm; -std::string prefix; - - -int main(int argc, char *argv[]) -{ - using namespace mln; - - if (argc != 4) - { - std::cerr << "Usage: " << argv[0] << " <input.pgm> <prefix> <win_size>" << std::endl; - return 1; - } - - util::timer tt; - tt.start(); - util::timer t; - - t.start(); - image2d<value::int_u8> input; - io::pgm::load(input, argv[1]); - - prefix = argv[2]; - - int win_size = atoi(argv[3]); - win::rectangle2d wr = win::rectangle2d(win_size,win_size); - window2d win; - win.insert(wr); - - accu::pair<accu::stat::mean<value::int_u8,double>, - accu::pair<accu::math::sumpow<2,value::int_u8,double>, - accu::math::sumpow<3,value::int_u8,double> > > accu; - t.stop(); - std::cout << "initialization - " << t << std::endl; - - - t.restart(); - mln_VAR(res, data::compute_in_window(accu, input, win)); - t.stop(); - std::cout << "compute in window - " << t << std::endl; - - initialize(skewness, res); - data::fill(skewness, 0); - - - point2d pc = input.domain().pcenter(); - std::cout << pc << " - sum_2 = " << res(pc).second.first << " - sum_3 = " << res(pc).second.second << " - mean = " << res(pc).first << std::endl; - - t.restart(); - { - int n; - mln_pixter_(image2d<double>) p(skewness); - for_all(p) - { - n = win.size(); - mln_VAR(d, res.element(p.offset())); - double m = d.first; - double sum_3 = d.second.second; - double sum_2 = d.second.first; - p.val() = (sum_3 - 3. * m * sum_2) / (double) n + 2. * std::pow(m, 3); - } - } - t.stop(); - std::cout << "Compute unskew - " << t << std::endl; - - - // t.restart(); - // skewness_pbm = data::transform(skewness, fun::v2b::threshold_le<double>(0)); - // t.stop(); - // std::cout << "binarize - " << t << std::endl; - - // { - // io::dump::save(skewness, prefix + "skewness.dump"); - // io::pgm::save(data::convert(value::int_u8(), skewness), prefix + "skewness_u8.pgm"); - // io::pgm::save(data::stretch(value::int_u8(), skewness), prefix + "skewness_stretch.pgm"); - // io::pbm::save(skewness_pbm, prefix + "skewness.pbm"); - // } - - t.restart(); - { - border::resize(skewness, input.border()); - mln_pixter_(image2d<value::int_u8>) p(input); - for_all(p) - { - if (skewness.element(p.offset()) > 0) - p.val() = mln_max(value::int_u8) - p.val(); - } - } - t.stop(); - std::cout << "Negate parts of input image - " << t << std::endl; - - t.restart(); - image2d<bool> bin = scribo::binarization::sauvola_ms(input, 101, 2); - std::cout << "sauvola_ms - " << t << std::endl; - - - std::cout << "Total time : " << tt << std::endl; - // prefix += "i_"; - - // image2d<bool> bin_i = scribo::binarization::sauvola(arith::revert(input), 51); - - // prefix = argv[2]; - - io::pbm::save(bin, prefix + "bin.pbm"); - // io::pbm::save(bin_i, prefix + "bin_i.pbm"); - - // image2d<bool> out; - // initialize(out, bin); - // mln_piter_(image2d<bool>) p(out.domain()); - // for_all(p) - // if (skewness_pbm(p)) - // out(p) = bin(p); - // else - // out(p) = bin_i(p); - - // io::pbm::save(out, prefix + "output.pbm"); - - // io::dump::save(scribo::binarization::internal::debug_stddev, prefix + "stddev.dump"); - // io::dump::save(scribo::binarization::internal::debug_mean, prefix + "mean.dump"); - // io::dump::save(scribo::binarization::internal::debug_threshold, prefix + "threshold.dump"); - -} -- 1.7.2.5

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Olena-patches August 2012