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Merge pull request #13532 from Tytan:channel_exp_comp

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Channels exposure compensators (#13532)

* feed compatible with single channel images

* Simplified BlockGainCompensator::apply

* ChannelsCompensator

* BlocksChannelsCompensator

* Make source level compatibility detector happy
This commit is contained in:
Quentin Chateau
2018-12-28 11:53:46 +01:00
committed by Alexander Alekhin
parent a9cf01113a
commit 6b96512d46
3 changed files with 241 additions and 51 deletions
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modules/stitching/include/opencv2/stitching/detail/exposure_compensate.hpp
+70 -8
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@@ -62,7 +62,7 @@ class CV_EXPORTS_W ExposureCompensator
public:
virtual ~ExposureCompensator() {}
enum { NO, GAIN, GAIN_BLOCKS };
enum { NO, GAIN, GAIN_BLOCKS, CHANNELS, CHANNELS_BLOCKS };
CV_WRAP static Ptr<ExposureCompensator> createDefault(int type);
/**
@@ -110,6 +110,7 @@ intensities, see @cite BL07 and @cite WJ10 for details.
class CV_EXPORTS_W GainCompensator : public ExposureCompensator
{
public:
// This Constructor only exists to make source level compatibility detector happy
CV_WRAP GainCompensator()
: GainCompensator(1) {}
CV_WRAP GainCompensator(int nr_feeds)
@@ -130,16 +131,13 @@ private:
int nr_feeds_;
};
/** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image block
intensities, see @cite UES01 for details.
/** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image
intensities on each channel independantly.
*/
class CV_EXPORTS_W BlocksGainCompensator : public ExposureCompensator
class CV_EXPORTS_W ChannelsCompensator : public ExposureCompensator
{
public:
CV_WRAP BlocksGainCompensator(int bl_width = 32, int bl_height = 32)
: BlocksGainCompensator(bl_width, bl_height, 1) {}
CV_WRAP BlocksGainCompensator(int bl_width, int bl_height, int nr_feeds)
: bl_width_(bl_width), bl_height_(bl_height), nr_feeds_(nr_feeds) {setUpdateGain(true);}
CV_WRAP ChannelsCompensator(int nr_feeds=1) : nr_feeds_(nr_feeds) {}
void feed(const std::vector<Point> &corners, const std::vector<UMat> &images,
const std::vector<std::pair<UMat,uchar> > &masks) CV_OVERRIDE;
CV_WRAP void apply(int index, Point corner, InputOutputArray image, InputArray mask) CV_OVERRIDE;
@@ -147,12 +145,76 @@ public:
CV_WRAP void setMatGains(std::vector<Mat>& umv) CV_OVERRIDE;
CV_WRAP void setNrFeeds(int nr_feeds) { nr_feeds_ = nr_feeds; }
CV_WRAP int getNrFeeds() { return nr_feeds_; }
std::vector<Scalar> gains() const { return gains_; }
private:
std::vector<Scalar> gains_;
int nr_feeds_;
};
/** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image blocks.
*/
class CV_EXPORTS_W BlocksCompensator : public ExposureCompensator
{
public:
BlocksCompensator(int bl_width=32, int bl_height=32, int nr_feeds=1)
: bl_width_(bl_width), bl_height_(bl_height), nr_feeds_(nr_feeds) {}
CV_WRAP void apply(int index, Point corner, InputOutputArray image, InputArray mask) CV_OVERRIDE;
CV_WRAP void getMatGains(CV_OUT std::vector<Mat>& umv) CV_OVERRIDE;
CV_WRAP void setMatGains(std::vector<Mat>& umv) CV_OVERRIDE;
CV_WRAP void setNrFeeds(int nr_feeds) { nr_feeds_ = nr_feeds; }
CV_WRAP int getNrFeeds() { return nr_feeds_; }
protected:
template<class Compensator>
void feed(const std::vector<Point> &corners, const std::vector<UMat> &images,
const std::vector<std::pair<UMat,uchar> > &masks);
private:
UMat getGainMap(const GainCompensator& compensator, int bl_idx, Size bl_per_img);
UMat getGainMap(const ChannelsCompensator& compensator, int bl_idx, Size bl_per_img);
int bl_width_, bl_height_;
std::vector<UMat> gain_maps_;
int nr_feeds_;
};
/** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image block
intensities, see @cite UES01 for details.
*/
class CV_EXPORTS_W BlocksGainCompensator : public BlocksCompensator
{
public:
// This Constructor only exists to make source level compatibility detector happy
CV_WRAP BlocksGainCompensator(int bl_width = 32, int bl_height = 32)
: BlocksGainCompensator(bl_width, bl_height, 1) {}
CV_WRAP BlocksGainCompensator(int bl_width, int bl_height, int nr_feeds)
: BlocksCompensator(bl_width, bl_height, nr_feeds) {setUpdateGain(true);}
void feed(const std::vector<Point> &corners, const std::vector<UMat> &images,
const std::vector<std::pair<UMat,uchar> > &masks) CV_OVERRIDE;
// This function only exists to make source level compatibility detector happy
CV_WRAP void apply(int index, Point corner, InputOutputArray image, InputArray mask) CV_OVERRIDE {
BlocksCompensator::apply(index, corner, image, mask); }
// This function only exists to make source level compatibility detector happy
CV_WRAP void getMatGains(CV_OUT std::vector<Mat>& umv) CV_OVERRIDE { BlocksCompensator::getMatGains(umv); }
// This function only exists to make source level compatibility detector happy
CV_WRAP void setMatGains(std::vector<Mat>& umv) CV_OVERRIDE { BlocksCompensator::setMatGains(umv); }
};
/** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image block
on each channel.
*/
class CV_EXPORTS_W BlocksChannelsCompensator : public BlocksCompensator
{
public:
CV_WRAP BlocksChannelsCompensator(int bl_width=32, int bl_height=32, int nr_feeds=1)
: BlocksCompensator(bl_width, bl_height, nr_feeds) {setUpdateGain(true);}
void feed(const std::vector<Point> &corners, const std::vector<UMat> &images,
const std::vector<std::pair<UMat,uchar> > &masks) CV_OVERRIDE;
};
//! @}
} // namespace detail