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2675b2265b
Support gamma correction of images with alpha channel Favour shrink over affine when reducing by integral factor
38 lines
817 B
C++
38 lines
817 B
C++
#ifndef SRC_OPERATIONS_H_
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#define SRC_OPERATIONS_H_
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#include <vips/vips8>
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using vips::VImage;
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namespace sharp {
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/*
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Composite images `src` and `dst` with premultiplied alpha channel and output
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image with premultiplied alpha.
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*/
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VImage Composite(VImage src, VImage dst);
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/*
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* Stretch luminance to cover full dynamic range.
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*/
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VImage Normalize(VImage image);
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/*
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* Gamma encoding/decoding
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*/
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VImage Gamma(VImage image, double const exponent);
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/*
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* Gaussian blur. Use sigma of -1 for fast blur.
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*/
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VImage Blur(VImage image, double const sigma);
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/*
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* Sharpen flat and jagged areas. Use radius of -1 for fast sharpen.
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*/
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VImage Sharpen(VImage image, int const radius, double const flat, double const jagged);
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} // namespace sharp
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#endif // SRC_OPERATIONS_H_
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