[Olena-patches] milena r1221: Better tests on float01

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2007-10-02 Matthieu Garrigues &lt;garrigues(a)lrde.epita.fr&gt; Better tests on float01. * mln/value/float01.hh: Fix. * mln/value/float01_.hh: Fix. * tests/value_float01.cc: Update. --- mln/value/float01.hh | 2 - mln/value/float01_.hh | 24 +++++++++++++++- tests/value_float01.cc | 70 ++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 92 insertions(+), 4 deletions(-) Index: trunk/milena/tests/value_float01.cc =================================================================== --- trunk/milena/tests/value_float01.cc (revision 1220) +++ trunk/milena/tests/value_float01.cc (revision 1221) @@ -26,10 +26,27 @@ // Public License. #include <iostream> + +#include <mln/core/image2d_b.hh> +#include <mln/debug/iota.hh> +#include <mln/debug/println.hh> + #include <mln/value/float01_8.hh> #include <mln/value/float01_16.hh> +#include <mln/value/int_u8.hh> +#include <mln/level/transform.hh> +#include <mln/io/pgm/load.hh> +#include <mln/io/pgm/save.hh> +#include <mln/core/win/rectangle2d.hh> +#include <mln/level/median.hh> +#include <mln/level/compare.hh> + + +using namespace mln; +using namespace mln::value; +using mln::value::int_u8; float fi(int x) { return 0.5; } int ii(int x) { return 1; } @@ -37,9 +54,35 @@ float fd(double x) { return 0.5; } int id(double x) { return 1; } + +struct tofloat01 : mln::Function_v2v<tofloat01> +{ + + typedef float01_<16> result; + result operator()(int_u8 v) const + { + result ret(double(v) / (mln_max(int_u8))); + // std::cout << v << "-> " << ret << std::endl; + return ret; + } +}; + +struct to8bits : mln::Function_v2v<to8bits> +{ + + typedef int_u8 result; + result operator()(float01_<16> v) const + { + result ret = int(v.value() * 255); + //std::cout << v << "-> " << ret << std::endl; + return ret; + } +}; + int main() { - using namespace mln::value; + win::rectangle2d rect(51, 51); + border::thickness = 52; float01_8 a(0.5); float01_16 b(0.5); @@ -74,4 +117,29 @@ std::cout << b << std::endl; b = 1; std::cout << b << std::endl; + + { + std::cout << "convert" << std::endl; + image2d_b<int_u8> + lena = io::pgm::load<int_u8>("../img/lena.pgm"), + ref(lena.domain()); + + image2d_b<float01_16> out(lena.domain()); + image2d_b<float01_16> tmp(lena.domain()); + + level::transform(lena, tofloat01(), tmp); + + level::median(tmp, rect, out); + level::median(lena, rect, ref); + + + level::transform(out, to8bits(), lena); + + io::pgm::save(lena, "out.pgm"); + io::pgm::save(ref, "ref.pgm"); + assert(lena == ref); + //debug::println(out); + } + + } Index: trunk/milena/mln/value/float01_.hh =================================================================== --- trunk/milena/mln/value/float01_.hh (revision 1220) +++ trunk/milena/mln/value/float01_.hh (revision 1221) @@ -89,12 +89,32 @@ }; + namespace internal + { + + template <unsigned n> + struct convert_< float01_<n> > + { + static float01_<n> value_at_index(std::size_t i) + { + float01_<n> tmp; + tmp.set_ind(i); + return tmp; + } + + static std::size_t index_of_value(const float01_<n>& v) + { + return v.value_ind(); + } + }; + } + template <unsigned n> struct props< float01_<n> > { static const std::size_t card_ = metal::pow<2, n>::value; - static const float01_<n> min() { return 0; } - static const float01_<n> max() { return 1; } + static const int min() { return 0; } + static const int max() { return 1; } static const unsigned nbits = n; typedef trait::kind::data kind; typedef float sum; Index: trunk/milena/mln/value/float01.hh =================================================================== --- trunk/milena/mln/value/float01.hh (revision 1220) +++ trunk/milena/mln/value/float01.hh (revision 1221) @@ -146,7 +146,7 @@ double float01::value() const { mln_invariant(nbits_ != 0); - return val_ / internal::two_pow_n_minus_1(nbits_); + return double(val_) / internal::two_pow_n_minus_1(nbits_); } unsigned long float01::value_ind() const