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Original implementation of Smooth Image filters

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Smoothing and noise reduction filters + noise generators.
This commit is contained in:
Bruno Herbelin
2022-06-08 23:44:19 +02:00
parent f6d528d36d
commit 1f0b145740
19 changed files with 311 additions and 151 deletions
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63
ImageFilter.cpp
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@@ -78,23 +78,13 @@ std::string fragmentFooter = "void main() {\n"
std::list< FilteringProgram > FilteringProgram::presets = {
FilteringProgram(),
FilteringProgram("Unfocus", "shaders/filters/focus.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Smooth", "shaders/filters/bilinear.glsl", "", { }),
FilteringProgram("Kuwahara", "shaders/filters/kuwahara.glsl", "", { { "Radius", 1.0} }),
FilteringProgram("Denoise", "shaders/filters/denoise.glsl", "", { { "Threshold", 0.5} }),
FilteringProgram("Noise", "shaders/filters/noise.glsl", "", { { "Amount", 0.25} }),
FilteringProgram("Grain", "shaders/filters/grain.glsl", "", { { "Amount", 0.5} }),
FilteringProgram("Bilateral","shaders/filters/bilinear.glsl", "", { }),
FilteringProgram("Pixelate", "shaders/filters/pixelate.glsl", "", { { "Size", 0.5}, { "Sharpen", 0.5} }),
FilteringProgram("Erosion", "shaders/filters/erosion.glsl", "", { { "Radius", 0.5} }),
FilteringProgram("Dilation", "shaders/filters/dilation.glsl", "", { { "Radius", 0.5} }),
FilteringProgram("Openning", "shaders/filters/erosion.glsl", "shaders/filters/dilation.glsl", { { "Radius", 0.5} }),
FilteringProgram("Closing", "shaders/filters/dilation.glsl", "shaders/filters/erosion.glsl", { { "Radius", 0.5} }),
FilteringProgram("Bloom", "shaders/filters/bloom.glsl", "", { { "Intensity", 0.5} }),
FilteringProgram("Bokeh", "shaders/filters/bokeh.glsl", "", { { "Radius", 1.0} }),
FilteringProgram("Chalk", "shaders/filters/talk.glsl", "", { { "Factor", 1.0} }),
FilteringProgram("Stippling","shaders/filters/stippling.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Dithering","shaders/filters/dithering.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Chromakey","shaders/filters/chromakey.glsl", "", { { "Red", 0.05}, { "Green", 0.63}, { "Blue", 0.14}, { "Tolerance", 0.54} }),
FilteringProgram("Fisheye", "shaders/filters/fisheye.glsl", "", { { "Factor", 0.35} }),
};
@@ -693,7 +683,7 @@ const char* SharpenFilter::method_label[SharpenFilter::SHARPEN_INVALID] = {
};
std::vector< FilteringProgram > SharpenFilter::programs_ = {
FilteringProgram("Unsharp Mask", "shaders/filters/sharpen_1.glsl", "shaders/filters/sharpen_2.glsl", { { "Amount", 0.5} }),
FilteringProgram("UnsharpMask", "shaders/filters/sharpen_1.glsl", "shaders/filters/sharpen_2.glsl", { { "Amount", 0.5} }),
FilteringProgram("Sharpen", "shaders/filters/sharpen.glsl", "", { { "Amount", 0.5} }),
FilteringProgram("Sharp Edge", "shaders/filters/sharpenedge.glsl","", { { "Amount", 0.5} }),
FilteringProgram("TopHat", "shaders/filters/erosion.glsl", "shaders/filters/tophat.glsl", { { "Radius", 0.5} }),
@@ -726,6 +716,55 @@ void SharpenFilter::accept (Visitor& v)
}
////////////////////////////////////////
///// //
//// SMOOTHING FILTERS ///
/// ////
////////////////////////////////////////
const char* SmoothFilter::method_label[SmoothFilter::SMOOTH_INVALID] = {
"Bilateral", "Kuwahara", "Opening", "Closing", "Erosion", "Dilation", "Remove noise", "Add noise", "Add grain"
};
std::vector< FilteringProgram > SmoothFilter::programs_ = {
FilteringProgram("Bilateral","shaders/filters/focus.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Kuwahara", "shaders/filters/kuwahara.glsl", "", { { "Radius", 1.0} }),
FilteringProgram("Opening", "shaders/filters/erosion.glsl", "shaders/filters/dilation.glsl", { { "Radius", 0.5} }),
FilteringProgram("Closing", "shaders/filters/dilation.glsl", "shaders/filters/erosion.glsl", { { "Radius", 0.5} }),
FilteringProgram("Erosion", "shaders/filters/erosion.glsl", "", { { "Radius", 0.5} }),
FilteringProgram("Dilation", "shaders/filters/dilation.glsl", "", { { "Radius", 0.5} }),
FilteringProgram("Denoise", "shaders/filters/denoise.glsl", "", { { "Threshold", 0.5} }),
FilteringProgram("Noise", "shaders/filters/noise.glsl", "", { { "Amount", 0.25} }),
FilteringProgram("Grain", "shaders/filters/grain.glsl", "", { { "Amount", 0.5} })
};
SmoothFilter::SmoothFilter (): ImageFilter(), method_(SMOOTH_INVALID)
{
}
void SmoothFilter::setMethod(int method)
{
method_ = (SmoothMethod) CLAMP(method, SMOOTH_BILINEAR, SMOOTH_INVALID-1);
setProgram( programs_[ (int) method_] );
}
void SmoothFilter::draw (FrameBuffer *input)
{
// Default
if (method_ == SMOOTH_INVALID)
setMethod( SMOOTH_BILINEAR );
ImageFilter::draw( input );
}
void SmoothFilter::accept (Visitor& v)
{
FrameBufferFilter::accept(v);
v.visit(*this);
}
////////////////////////////////////////
///// //
//// EDGE FILTERS ///