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// K-3D
// Copyright (c) 1995-2008, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program 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 program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\author Tim Shead (tshead@k-3d.com)
*/
#include "CompareArgs.h"
#include "Metric.h"
#include "RGBAImage.h"
#include <k3d-i18n-config.h>
#include <k3dsdk/bitmap.h>
#include <k3dsdk/document_plugin_factory.h>
#include <k3dsdk/hints.h>
#include <k3dsdk/ibitmap_source.h>
#include <k3dsdk/pointer_demand_storage.h>
#include <k3dsdk/value_demand_storage.h>
#include <k3dsdk/node.h>
namespace module
{
namespace pdiff
{
/////////////////////////////////////////////////////////////////////////////
// perceptual_difference
/// Computes the a difference metric between two images based on the physiology of human vision.
class perceptual_difference :
public k3d::node,
public k3d::ibitmap_source
{
typedef k3d::node base;
public:
perceptual_difference(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
base(Factory, Document),
m_bitmap_a(init_owner(*this) + init_name("input_a") + init_label(_("Input A")) + init_description(_("A input bitmap")) + init_value<k3d::bitmap*>(0)),
m_bitmap_b(init_owner(*this) + init_name("input_b") + init_label(_("Input B")) + init_description(_("B input bitmap")) + init_value<k3d::bitmap*>(0)),
m_field_of_view(init_owner(*this) + init_name("field_of_view") + init_label(_("Field-of-view")) + init_description(_("Field-of-view (degrees)")) + init_value(45.0) + init_step_increment(0.01)),
m_gamma(init_owner(*this) + init_name("gamma") + init_label(_("Gamma")) + init_description(_("Gamma")) + init_value(2.2) + init_step_increment(0.01)),
m_luminance(init_owner(*this) + init_name("luminance") + init_label(_("Luminance")) + init_description(_("Display Luminance (candela per square meter)")) + init_value(100.0) + init_step_increment(1.0)),
m_difference(init_owner(*this) + init_name("difference") + init_label(_("Difference")) + init_description(_("The count of perceivably-different pixels")) + init_value(std::numeric_limits<k3d::uint32_t>::max())),
m_output_bitmap(init_owner(*this) + init_name("output_bitmap") + init_label(_("Output Bitmap")) + init_description(_("Output bitmap")))
{
m_difference.set_update_slot(sigc::mem_fun(*this, &perceptual_difference::difference_execute));
m_output_bitmap.set_update_slot(sigc::mem_fun(*this, &perceptual_difference::bitmap_execute));
m_bitmap_a.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_difference.make_slot()));
m_bitmap_b.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_difference.make_slot()));
m_field_of_view.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_difference.make_slot()));
m_gamma.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_difference.make_slot()));
m_luminance.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_difference.make_slot()));
m_bitmap_a.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_output_bitmap.make_slot()));
m_bitmap_b.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_output_bitmap.make_slot()));
m_field_of_view.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_output_bitmap.make_slot()));
m_gamma.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_output_bitmap.make_slot()));
m_luminance.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(m_output_bitmap.make_slot()));
}
k3d::iproperty& bitmap_source_output()
{
return m_output_bitmap;
}
void difference_execute(const std::vector<k3d::ihint*>& Hints, k3d::uint32_t& Difference)
{
Difference = std::numeric_limits<k3d::uint32_t>::max();
k3d::bitmap* const bitmap_a = m_bitmap_a.pipeline_value();
if(!bitmap_a)
return;
k3d::bitmap* const bitmap_b = m_bitmap_b.pipeline_value();
if(!bitmap_b)
return;
if(bitmap_a->width() != bitmap_b->width() || bitmap_a->height() != bitmap_b->height())
return;
CompareArgs args;
args.ImgA = convert(*bitmap_a);
args.ImgB = convert(*bitmap_b);
args.ImgDiff = new RGBAImage(bitmap_a->width(), bitmap_a->height());
args.Verbose = false;
args.FieldOfView = m_field_of_view.pipeline_value();
args.Gamma = m_gamma.pipeline_value();
args.Luminance = m_luminance.pipeline_value();
args.ThresholdPixels = 0;
Yee_Compare(args);
Difference = args.FailedPixels;
}
void bitmap_execute(const std::vector<k3d::ihint*>& Hints, k3d::bitmap& Bitmap)
{
k3d::bitmap* const bitmap_a = m_bitmap_a.pipeline_value();
if(!bitmap_a)
return;
k3d::bitmap* const bitmap_b = m_bitmap_b.pipeline_value();
if(!bitmap_b)
return;
if(bitmap_a->width() != bitmap_b->width() || bitmap_a->height() != bitmap_b->height())
return;
CompareArgs args;
args.ImgA = convert(*bitmap_a);
args.ImgB = convert(*bitmap_b);
args.ImgDiff = new RGBAImage(bitmap_a->width(), bitmap_a->height());
args.Verbose = false;
args.FieldOfView = m_field_of_view.pipeline_value();
args.Gamma = m_gamma.pipeline_value();
args.Luminance = m_luminance.pipeline_value();
args.ThresholdPixels = 0;
Yee_Compare(args);
convert(*args.ImgDiff, Bitmap);
}
static RGBAImage* convert(k3d::bitmap& Source)
{
RGBAImage* const result = new RGBAImage(Source.width(), Source.height());
const k3d::bitmap::view_t& source = view(Source);
unsigned int i = 0;
const k3d::bitmap::view_t::iterator begin = source.begin();
const k3d::bitmap::view_t::iterator end = source.end();
for(k3d::bitmap::view_t::iterator pixel = begin; pixel != end; ++pixel, ++i)
{
result->Set(
boost::gil::channel_convert<boost::gil::bits8>(get_color(*pixel, boost::gil::red_t())),
boost::gil::channel_convert<boost::gil::bits8>(get_color(*pixel, boost::gil::green_t())),
boost::gil::channel_convert<boost::gil::bits8>(get_color(*pixel, boost::gil::blue_t())),
boost::gil::channel_convert<boost::gil::bits8>(get_color(*pixel, boost::gil::alpha_t())),
i
);
}
return result;
}
static void convert(RGBAImage& Source, k3d::bitmap& Destination)
{
Destination.recreate(Source.Get_Width(), Source.Get_Height());
const k3d::bitmap::view_t& destination = view(Destination);
unsigned int i = 0;
const k3d::bitmap::view_t::iterator begin = destination.begin();
const k3d::bitmap::view_t::iterator end = destination.end();
for(k3d::bitmap::view_t::iterator pixel = begin; pixel != end; ++pixel, ++i)
{
get_color(*pixel, boost::gil::red_t()) = boost::gil::channel_convert<boost::gil::bits16f>(Source.Get_Red(i));
get_color(*pixel, boost::gil::green_t()) = boost::gil::channel_convert<boost::gil::bits16f>(Source.Get_Green(i));
get_color(*pixel, boost::gil::blue_t()) = boost::gil::channel_convert<boost::gil::bits16f>(Source.Get_Blue(i));
get_color(*pixel, boost::gil::alpha_t()) = boost::gil::channel_convert<boost::gil::bits16f>(Source.Get_Alpha(i));
}
}
static k3d::iplugin_factory& get_factory()
{
static k3d::document_plugin_factory<perceptual_difference,
k3d::interface_list<k3d::ibitmap_source > > factory(
k3d::uuid(0x2f0ffccf, 0xaa40e2f3, 0xb5221a9f, 0x20131d9f),
"BitmapPerceptualDifference",
_("Calculate a perceptual difference metric between two bitmap images"),
"Bitmap Test",
k3d::iplugin_factory::EXPERIMENTAL);
return factory;
}
private:
k3d_data(k3d::bitmap*, immutable_name, change_signal, no_undo, local_storage, no_constraint, writable_property, no_serialization) m_bitmap_a;
k3d_data(k3d::bitmap*, immutable_name, change_signal, no_undo, local_storage, no_constraint, writable_property, no_serialization) m_bitmap_b;
k3d_data(double, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_field_of_view;
k3d_data(double, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_gamma;
k3d_data(double, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_luminance;
k3d_data(k3d::uint32_t, immutable_name, change_signal, no_undo, value_demand_storage, no_constraint, read_only_property, no_serialization) m_difference;
k3d_data(k3d::bitmap*, immutable_name, change_signal, no_undo, pointer_demand_storage, no_constraint, read_only_property, no_serialization) m_output_bitmap;
};
/////////////////////////////////////////////////////////////////////////////
// perceptual_difference_factory
k3d::iplugin_factory& perceptual_difference_factory()
{
return perceptual_difference::get_factory();
}
} // namespace pdiff
} // namespace module
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