* sauvola_fast.cc, * scribo/binarization/internal/local_threshold_core.hh, * tests/binarization/niblack.cc, * tests/binarization/niblack.ref.pbm, * tests/binarization/sauvola.cc, * tests/binarization/sauvola.ref.pbm: Here. --- scribo/ChangeLog | 11 ++ scribo/sauvola_fast.cc | 109 +++---------------- .../binarization/internal/local_threshold_core.hh | 11 ++- scribo/tests/binarization/niblack.cc | 1 - scribo/tests/binarization/niblack.ref.pbm | Bin 32884 -> 32884 bytes scribo/tests/binarization/sauvola.cc | 1 - scribo/tests/binarization/sauvola.ref.pbm | Bin 32884 -> 32884 bytes 7 files changed, 38 insertions(+), 95 deletions(-) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index 8cc3cd6..f2268fb 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,5 +1,16 @@ 2012-08-23 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + Fix binarization tests. + + * sauvola_fast.cc, + * scribo/binarization/internal/local_threshold_core.hh, + * tests/binarization/niblack.cc, + * tests/binarization/niblack.ref.pbm, + * tests/binarization/sauvola.cc, + * tests/binarization/sauvola.ref.pbm: Here. + +2012-08-23 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + Revamp *_threshold functions. * scribo/binarization/internal/sauvola_core.hh: Remove. diff --git a/scribo/sauvola_fast.cc b/scribo/sauvola_fast.cc index 7eb41ca..f412bbe 100644 --- a/scribo/sauvola_fast.cc +++ b/scribo/sauvola_fast.cc @@ -5,96 +5,18 @@ #include <mln/util/couple.hh> #include <mln/util/timer.hh> #include <scribo/binarization/internal/sauvola_formula.hh> +#include <scribo/binarization/internal/sauvola_functor.hh> #include <scribo/util/init_integral_image.hh> #include <scribo/util/integral_sum_sum2_functor.hh> +#include <scribo/util/compute_sub_domains.hh> -namespace mln -{ - - template <typename I> - struct sauvola_functor - { - - const I& input; - typedef mln_ch_value(I,bool) bin_t; - bin_t bin; - - image2d<double> th_; - - const mln_value(I)* pi; - bool* po; - - double K_; - double R_; - - scribo::binarization::internal::sauvola_formula formula_; - - int step_; - unsigned next_line2; - unsigned next_line3; - unsigned offset1; - unsigned offset2; - - sauvola_functor(const I& input_, mln_ch_value(I,bool)& bin_, double K, double R) - : input(input_), - bin(bin_), - pi(&input(input.domain().pmin())), - po(&bin(bin.domain().pmin())), - K_(K), - R_(R) - { - step_ = 3; - 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; - - offset1 = input.delta_index(dpoint2d(+1,0)); - offset2 = input.delta_index(dpoint2d(+2,0)); - } - - // Run every 4 pixels. - void exec(double mean, double stddev) - { - static point2d p(0,0); - - double th = formula_(p, mean, stddev, K_, R_); - - for (int i = 0; i < step_; ++i, ++po, ++pi) - { - *po = (*pi <= th); - *(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) - { - po += next_line3; - pi += next_line3; - } - - - void finalize() - { - } - - }; +#include <mln/io/dump/save.hh> +#include <mln/border/mirror.hh> +#include <mln/border/adjust.hh> +namespace mln +{ image2d<bool> sauvola_fast(const image2d<value::int_u8>& input, unsigned win) @@ -102,9 +24,16 @@ namespace mln util::timer t; t.start(); + mln::util::array<mln::util::couple<box2d, unsigned> > + sub_domains = scribo::util::compute_sub_domains(input, 1, 3); + + border::adjust(input, sub_domains(1).second()); + border::mirror(input); + 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); + integral = scribo::util::init_integral_image(input, 3, fi, sub_domains[2].first(), + sub_domains[2].second()); t.stop(); std::cout << "image integrale - " << t << std::endl; @@ -119,11 +48,9 @@ namespace mln # endif // ! SCRIBO_LOCAL_THRESHOLD_DEBUG t.restart(); - image2d<bool> output; - initialize(output, input); - sauvola_functor<image2d<value::int_u8> > f(input, output, - SCRIBO_DEFAULT_SAUVOLA_K, - SCRIBO_DEFAULT_SAUVOLA_R); + scribo::binarization::internal::sauvola_functor<image2d<value::int_u8> > f(input, + 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; diff --git a/scribo/scribo/binarization/internal/local_threshold_core.hh b/scribo/scribo/binarization/internal/local_threshold_core.hh index f2c9cb1..9ea81f9 100644 --- a/scribo/scribo/binarization/internal/local_threshold_core.hh +++ b/scribo/scribo/binarization/internal/local_threshold_core.hh @@ -152,8 +152,15 @@ namespace scribo # endif // ! SCRIBO_LOCAL_THRESHOLD_DEBUG t.restart(); - scribo::canvas::integral_browsing(integral, 1, window_size / 3, - window_size / 3, 3, f); + + window_size /= 3; + if (window_size % 2) + window_size += 2; + else + window_size += 1; + + scribo::canvas::integral_browsing(integral, 1, window_size, + window_size, 3, f); t.stop(); std::cout << "Binarization - " << t << std::endl; diff --git a/scribo/tests/binarization/niblack.cc b/scribo/tests/binarization/niblack.cc index 99a58e2..0263c1e 100644 --- a/scribo/tests/binarization/niblack.cc +++ b/scribo/tests/binarization/niblack.cc @@ -30,7 +30,6 @@ #include <mln/value/int_u8.hh> #include <mln/io/pgm/load.hh> #include <mln/io/pbm/load.hh> -#include <mln/io/pbm/save.hh> #include <scribo/binarization/niblack.hh> diff --git a/scribo/tests/binarization/niblack.ref.pbm b/scribo/tests/binarization/niblack.ref.pbm index 83cf4fb..225b1df 100644 Binary files a/scribo/tests/binarization/niblack.ref.pbm and b/scribo/tests/binarization/niblack.ref.pbm differ diff --git a/scribo/tests/binarization/sauvola.cc b/scribo/tests/binarization/sauvola.cc index 33eb59f..99efce5 100644 --- a/scribo/tests/binarization/sauvola.cc +++ b/scribo/tests/binarization/sauvola.cc @@ -30,7 +30,6 @@ #include <mln/value/int_u8.hh> #include <mln/io/pgm/load.hh> #include <mln/io/pbm/load.hh> -#include <mln/io/pbm/save.hh> #include <scribo/binarization/sauvola.hh> diff --git a/scribo/tests/binarization/sauvola.ref.pbm b/scribo/tests/binarization/sauvola.ref.pbm index 65d5a72..6eaf2fa 100644 Binary files a/scribo/tests/binarization/sauvola.ref.pbm and b/scribo/tests/binarization/sauvola.ref.pbm differ -- 1.7.2.5