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Original implementation of Edge Image filters

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Bruno Herbelin
2022-06-01 23:49:12 +02:00
parent fd942b28c6
commit d7be7a69ab
18 changed files with 258 additions and 15 deletions
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57
ImageFilter.cpp
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@@ -78,27 +78,17 @@ std::string fragmentFooter = "void main() {\n"
std::list< FilteringProgram > FilteringProgram::presets = {
FilteringProgram(),
FilteringProgram("Blur", "shaders/filters/blur_1.glsl", "shaders/filters/blur_2.glsl", { { "Amount", 0.5} }),
FilteringProgram("HashBlur", "shaders/filters/hashedblur.glsl", "", { { "Radius", 0.5}, { "Iterations", 0.5 } }),
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("Sharpen", "shaders/filters/sharp.glsl", "", { { "Amount", 0.5} }),
FilteringProgram("Unsharp Mask", "shaders/filters/sharpen_1.glsl", "shaders/filters/sharpen_2.glsl", { { "Amount", 0.5} }),
FilteringProgram("Sharp Edge", "shaders/filters/bilinear.glsl", "shaders/filters/sharpenedge.glsl", { { "Strength", 0.5} }),
FilteringProgram("Edge", "shaders/filters/bilinear.glsl", "shaders/filters/edge.glsl", { { "Threshold", 0.5} }),
FilteringProgram("Sobel", "shaders/filters/sobel.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Freichen", "shaders/filters/freichen.glsl", "", { { "Factor", 0.5} }),
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("TopHat", "shaders/filters/erosion.glsl", "shaders/filters/tophat.glsl", { { "Radius", 0.5} }),
FilteringProgram("BlackHat", "shaders/filters/dilation.glsl", "shaders/filters/blackhat.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} }),
@@ -595,13 +585,15 @@ void BlurFilter::accept (Visitor& v)
////////////////////////////////////////
const char* SharpenFilter::method_label[SharpenFilter::SHARPEN_INVALID] = {
"Unsharp mask", "Convolution", "Edge"
"Unsharp mask", "Convolution", "Edge", "White hat", "Black hat"
};
std::vector< FilteringProgram > SharpenFilter::programs_ = {
FilteringProgram("Unsharp Mask", "shaders/filters/sharpen_1.glsl", "shaders/filters/sharpen_2.glsl", { { "Amount", 0.5} }),
FilteringProgram("Sharpen", "shaders/filters/sharp.glsl", "", { { "Amount", 0.5} }),
FilteringProgram("Sharp Edge", "shaders/filters/bilinear.glsl", "shaders/filters/sharpenedge.glsl", { { "Strength", 0.5} }),
FilteringProgram("TopHat", "shaders/filters/erosion.glsl", "shaders/filters/tophat.glsl", { { "Radius", 0.5} }),
FilteringProgram("BlackHat", "shaders/filters/dilation.glsl", "shaders/filters/blackhat.glsl", { { "Radius", 0.5} }),
};
SharpenFilter::SharpenFilter (): ImageFilter(), method_(SHARPEN_INVALID)
@@ -630,4 +622,47 @@ void SharpenFilter::accept (Visitor& v)
}
////////////////////////////////////////
///// //
//// EDGE FILTERS ///
/// ////
////////////////////////////////////////
const char* EdgeFilter::method_label[EdgeFilter::EDGE_INVALID] = {
"Thresholding", "Sobel", "Freichen", "Contour"
};
std::vector< FilteringProgram > EdgeFilter::programs_ = {
FilteringProgram("Edge", "shaders/filters/bilinear.glsl", "shaders/filters/edge.glsl", { { "Threshold", 0.5} }),
FilteringProgram("Sobel", "shaders/filters/sobel.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Freichen", "shaders/filters/freichen.glsl", "", { { "Factor", 0.5} }),
FilteringProgram("Contour", "shaders/filters/sharpen_1.glsl", "shaders/filters/contour_2.glsl", { { "Amount", 0.5} }),
};
EdgeFilter::EdgeFilter (): ImageFilter(), method_(EDGE_INVALID)
{
}
void EdgeFilter::setMethod(int method)
{
method_ = (EdgeMethod) CLAMP(method, EDGE_THRESHOLD, EDGE_INVALID-1);
setProgram( programs_[ (int) method_] );
}
void EdgeFilter::draw (FrameBuffer *input)
{
// Default
if (method_ == EDGE_INVALID)
setMethod( EDGE_THRESHOLD );
ImageFilter::draw( input );
}
void EdgeFilter::accept (Visitor& v)
{
FrameBufferFilter::accept(v);
v.visit(*this);
}