cloudy-raytracer/post_processing/bloom.h

#ifndef CG1_TRACER_BLOOM_H
#define CG1_TRACER_BLOOM_H

#include "common/texture.h"
#include "common/vector3d.h"

class Bloom {

public:
    Bloom(CImg<float> image);
    CImg<float> bloom(float threshold, int kernelSize, float sigma, float intensity);

private:
    void scaleBrightness(float scale);
    void gaussianBlur(int kernelSize, float sigma);

    CImg<float> convolution(CImg<float> &img, CImg<float> &kernel);
    CImg<float> computeGaussianKernel(int kernelSize, float sigma);



    CImg<float> image;
};


#endif //CG1_TRACER_BLOOM_H