ChangeLog | 10 ++ oln/morpho/hit_or_miss.hh | 14 +-- oln/morpho/top_hat.hh | 190 +++++++++++++++++++++++++++++++++++++++++++++ tests/morpho/tests/top_hat | 55 +++++++++++++ 4 files changed, 262 insertions(+), 7 deletions(-) Index: olena/ChangeLog from Roland Levillain <roland@lrde.epita.fr> Add top-hat operators. * oln/morpho/top_hat.hh: New file. * tests/morpho/tests/top_hat: New test. * olena/oln/morpho/hit_or_miss.hh: Add missing Doxygen tags in comments. 2005-07-08 Roland Levillain <roland@lrde.epita.fr> Index: olena/tests/morpho/tests/top_hat --- olena/tests/morpho/tests/top_hat (révision 0) +++ olena/tests/morpho/tests/top_hat (révision 0) @@ -0,0 +1,55 @@ + // -*- C++ -*- +#include "data.hh" +#include <oln/utils/md5.hh> + +#include <ntg/int.hh> +#include <oln/io/read_image.hh> +#include <oln/basics2d.hh> +#include <oln/morpho/top_hat.hh> + +using namespace oln; + +bool check() +{ + image2d<ntg::int_u8> ima; + ima = io::read(rdata("lena-small.pgm")); + + // White top-hat. + utils::key::value_type data_key_wth[16] = + { 0x59, 0x93, 0x51, 0xde, 0x4, 0x43, 0xb8, 0x7e, + 0xf8, 0xf4, 0xd1, 0x7, 0x6c, 0x81, 0x2b, 0xb4 }; + utils::key key_wth(data_key_wth); + + if (utils::md5(morpho::white_top_hat(ima, win_c8p())) != key_wth) + return true; + + // Black top-hat. + utils::key::value_type data_key_bth[16] = + {0x8e, 0xe6, 0x26, 0x8e, 0x80, 0x8d, 0xcc, 0x9e, + 0x35, 0x1e, 0xe5, 0x2b, 0x41, 0xb1, 0xde, 0x53 }; + utils::key key_bth(data_key_bth); + + if (utils::md5(morpho::black_top_hat(ima, win_c8p())) != key_bth) + return true; + + // Self-complementary top-hat. + utils::key::value_type data_key_scth[16] = + { 0x50, 0xec, 0xca, 0x22, 0xce, 0xa4, 0x45, 0x32, + 0x52, 0x7b, 0x47, 0x4a, 0x4a, 0xe4, 0x8, 0x45 }; + utils::key key_scth(data_key_scth); + + if (utils::md5(morpho::self_complementary_top_hat(ima, win_c8p())) != + key_scth) + return true; + + // Top-hat contrast operator. + utils::key::value_type data_key_thco[16] = + { 0x6d, 0x4, 0x75, 0xf5, 0xb0, 0x79, 0xba, 0xe8, + 0x8e, 0x81, 0x69, 0x37, 0xf4, 0xbe, 0x27, 0x2d }; + utils::key key_thco(data_key_thco); + + if (utils::md5(morpho::top_hat_contrast_op(ima, win_c8p())) != key_thco) + return true; + + return false; +} Index: olena/oln/morpho/hit_or_miss.hh --- olena/oln/morpho/hit_or_miss.hh (révision 239) +++ olena/oln/morpho/hit_or_miss.hh (copie de travail) @@ -117,7 +117,7 @@ /*! \brief Perform an hit-or-miss opening. - Compute the hit-or-miss opening of input by the composite + Compute the hit-or-miss opening of \a input by the composite structuring element (win1, win2). REF: Soille, 2nd ed., p.149. @@ -153,7 +153,7 @@ /*! \brief Perform an hit-or-miss opening of background. - Compute the hit-or-miss opening of the background of input by + Compute the hit-or-miss opening of the background of \a input by the composite structuring element (win1, win2). REF: Soille, 2nd ed., p.149. @@ -189,7 +189,7 @@ /*! \brief Perform an hit-or-miss closing. - Compute the hit-or-miss closing of input by the composite + Compute the hit-or-miss closing of \a input by the composite structuring element (win1, win2). This is the dual transformation of hit-or-miss opening with respect to set complementation. @@ -229,10 +229,10 @@ /*! \brief Perform an hit-or-miss closing of the background. - Compute the hit-or-miss closing of the background of input by - the composite structuring element (win1, win2). This is the - dual transformation of hit-or-miss opening of the background - with respect to set complementation. + Compute the hit-or-miss closing of the background of \a input + by the composite structuring element (win1, win2). This is + the dual transformation of hit-or-miss opening of the + background with respect to set complementation. REF: Soille, 2nd ed., p.149. Index: olena/oln/morpho/top_hat.hh --- olena/oln/morpho/top_hat.hh (révision 0) +++ olena/oln/morpho/top_hat.hh (révision 0) @@ -0,0 +1,190 @@ +// Copyright (C) 2002, 2004, 2005 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLENA_MORPHO_TOP_HAT_HH +# define OLENA_MORPHO_TOP_HAT_HH + +# include <mlc/cmp.hh> + +# include <oln/utils/record.hh> +# include <oln/morpho/opening.hh> +# include <oln/morpho/closing.hh> +# include <oln/morpho/temp.hh> +# include <oln/level/arith.hh> + +// FIXME: More documentation (in particular, code snippets). See Olena +// 0.10's doc. + +namespace oln { + + namespace morpho { + + /*! \brief Compute the white top-hat of an image (also called + top-hat by opening). + + Compute white top-hat of \a input using \a win as structuring + element. + + REF: Soille, 2nd ed., p.121. + + \arg \c I exact type of the input image. + \arg \c W exact type of the first structuring element. + + \param input image to process. + \param win structuring element. */ + template<typename I, typename W> + oln_type_of(I, concrete) + white_top_hat(const abstract::image<I>& input, + const abstract::window<W>& win) + { + mlc::eq<oln_type_of(I, grid), oln_wn_type_of(W, grid)>::ensure(); + + entering("morpho::white_top_hat"); + registering(input, "input"); + oln_type_of(I, concrete) open("open"), output("output"); + + open = opening(input, win); + output = force_value_type_to<oln_type_of(I, concrete)>(input - open); + + exiting("morpho::white_top_hat"); + return output; + } + + /*! \brief Compute the black top-hat of an image (also called + top-hat by closing). + + Compute black top-hat of \a input using \a win as structuring + element. + + REF: Soille, 2nd ed., p.122. + + \arg \c I exact type of the input image. + \arg \c W exact type of the first structuring element. + + \param input image to process. + \param win structuring element. */ + template<typename I, typename W> + oln_type_of(I, concrete) + black_top_hat(const abstract::image<I>& input, + const abstract::window<W>& win) + { + mlc::eq<oln_type_of(I, grid), oln_wn_type_of(W, grid)>::ensure(); + + entering("morpho::black_top_hat"); + registering(input, "input"); + oln_type_of(I, concrete) close("close"), output("output"); + + close = closing(input, win); + output = force_value_type_to<oln_type_of(I, concrete)>(close - input); + + exiting("morpho::black_top_hat"); + return output; + } + + /*! \brief Compute the self-complementary top-hat of an image. + + Compute self-complementary top-hat of \a input using \a win as + structuring element. + + REF: Soille, 2nd ed., p.122. + + \arg \c I exact type of the input image. + \arg \c W exact type of the first structuring element. + + \param input image to process. + \param win structuring element. */ + template<typename I, typename W> + oln_type_of(I, concrete) + self_complementary_top_hat(const abstract::image<I>& input, + const abstract::window<W>& win) + { + mlc::eq<oln_type_of(I, grid), oln_wn_type_of(W, grid)>::ensure(); + + entering("morpho::self_complementary_top_hat"); + registering(input, "input"); + oln_type_of(I, concrete) close("close"), open("open"), output("output"); + + close = closing(input, win); + open = opening(input, win); + output = force_value_type_to<oln_type_of(I, concrete)>(close - open); + + exiting("morpho::self_complementary_top_hat"); + return output; + } + + /*! \brief Top-hat contrast operator. + + Enhance contrast of \a input by adding the white top-hat, then + subtracting the black top-hat to \a input. Top-hats are + computed using \win as structuring element. + + REF: Soille, 2nd ed., p.126. + + \arg \c I exact type of the input image. + \arg \c W exact type of the first structuring element. + + \param input image to process. + \param win structuring element. */ + template<typename I, typename W> + oln_type_of(I, concrete) + top_hat_contrast_op(const abstract::image<I>& input, + const abstract::window<W>& win) + { + mlc::eq<oln_type_of(I, grid), oln_wn_type_of(W, grid)>::ensure(); + + entering("morpho::top_hat_contrast_op"); + registering(input, "input"); + oln_type_of(I, concrete) wth("wth"), bth("bth"), output("output"); + + wth = white_top_hat(input, win); + bth = black_top_hat(input, win); + /* FIXME: A more efficient computation might be achieved using + this formula: + + output = + force_value_type_to<oln_type_of(I, concrete)> + (3 * input + closing(input, win) - opening(input, win)); + + but we don't have the product of image with a literal yet in + Olena. */ + /* FIXME: `force' is not necessary the preferred behavior. + Consider adding another facade to this operator, to let the + user choose another behavior (`bound', for example). See + Olena 0.10's oln/morpho/top_hat.inc. */ + output = + force_value_type_to<oln_type_of(I, concrete)>(input + wth - bth); + + exiting("morpho::top_hat_contrast_op"); + return output; + } + + } // end of namespace oln::morpho + +} // end of namespace oln + + +#endif // ! OLENA_MORPHO_TOP_HAT_HH