-#ifndef _DECONVOLUTION_SHARPEN_EFFECT_H
-#define _DECONVOLUTION_SHARPEN_EFFECT_H 1
+#ifndef _MOVIT_DECONVOLUTION_SHARPEN_EFFECT_H
+#define _MOVIT_DECONVOLUTION_SHARPEN_EFFECT_H 1
// DeconvolutionSharpenEffect is an effect that sharpens by way of deconvolution
// (i.e., trying to reverse the blur kernel, as opposed to just boosting high
//
// Jain, Anil K.: “Fundamentals of Digital Image Processing”, Prentice Hall, 1988.
+#include <epoxy/gl.h>
+#include <Eigen/Dense>
+#include <string>
+
#include "effect.h"
+namespace movit {
+
class DeconvolutionSharpenEffect : public Effect {
public:
DeconvolutionSharpenEffect();
- virtual std::string effect_type_id() const { return "DeconvolutionSharpenEffect"; }
- std::string output_fragment_shader();
+ virtual ~DeconvolutionSharpenEffect();
+ std::string effect_type_id() const override { return "DeconvolutionSharpenEffect"; }
+ std::string output_fragment_shader() override;
+
+ // Samples a lot of times from its input.
+ bool needs_texture_bounce() const override { return true; }
- virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height)
+ void inform_input_size(unsigned input_num, unsigned width, unsigned height) override
{
this->width = width;
this->height = height;
}
- void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
+ void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) override;
+ AlphaHandling alpha_handling() const override { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
private:
// Input size.
// (ie., blur is assumed to be a 2px circle), correlation = 0.95, and noise = 0.01.
// Note that once the radius starts going too far past R, you will get nonsensical results.
float circle_radius, gaussian_radius, correlation, noise;
+
+ // The deconvolution kernel, and the parameters last time we did an update.
+ Eigen::MatrixXf g;
+ int last_R;
+ float last_circle_radius, last_gaussian_radius, last_correlation, last_noise;
+
+ float *uniform_samples;
+
+ void update_deconvolution_kernel();
};
-#endif // !defined(_DECONVOLUTION_SHARPEN_EFFECT_H)
+} // namespace movit
+
+#endif // !defined(_MOVIT_DECONVOLUTION_SHARPEN_EFFECT_H)