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Image.hpp
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/*
* HDRMerge - HDR exposure merging software.
* Copyright 2012 Javier Celaya
*
* This file is part of HDRMerge.
*
* HDRMerge is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HDRMerge is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HDRMerge. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef _IMAGE_H_
#define _IMAGE_H_
#include <memory>
#include <interpolation.h>
#include "Array2D.hpp"
namespace hdrmerge {
class RawParameters;
class Image : public Array2D<uint16_t> {
public:
static const int scaleSteps = 6;
Image() : Array2D<uint16_t>() {}
Image(uint16_t * rawImage, const RawParameters & params) {
buildImage(rawImage, params);
}
Image(const Image & copy) = delete;
Image & operator=(const Image & copy) = delete;
Image(Image && move) {
(*this) = std::move(move);
}
Image & operator=(Image && move);
bool good() const {
return width > 0;
}
double exposureAt(size_t x, size_t y) const {
return response((*this)(x, y));
}
uint16_t getMaxAround(size_t x, size_t y) const;
bool isSaturated(uint16_t v) const {
return v >= satThreshold;
}
bool isSaturated(size_t x, size_t y) const {
return isSaturated((*this)(x, y));
}
bool isSaturatedAround(size_t x, size_t y) const {
return isSaturated(getMaxAround(x, y));
}
double getRelativeExposure() const;
size_t alignWith(const Image & r);
void preScale();
void releaseAlignData() {
scaled.reset();
}
void computeResponseFunction(const Image & nextImage);
bool operator<(const Image & r) {
return brightness > r.brightness;
}
void setSaturationThreshold(uint16_t sat);
private:
struct ResponseFunction {
uint16_t threshold;
double linear;
alglib::spline1dinterpolant nonLinear;
double operator()(uint16_t v) const {
return v <= threshold ? v * linear : alglib::spline1dcalc(nonLinear, v);
}
void setLinear(double slope);
};
std::unique_ptr<Array2D<uint16_t>[]> scaled;
uint16_t satThreshold, max;
double brightness;
ResponseFunction response;
double halfLightPercent;
void subtractBlack(const RawParameters & params);
void buildImage(uint16_t * rawImage, const RawParameters & params);
};
} // namespace hdrmerge
#endif // _IMAGE_H_