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@addtogroup stitching_exposure 52 //! @{ 53 54 /** @brief Base class for all exposure compensators. 55 */ 56 class CV_EXPORTS ExposureCompensator 57 { 58 public: 59 virtual ~ExposureCompensator() {} 60 61 enum { NO, GAIN, GAIN_BLOCKS }; 62 static Ptr<ExposureCompensator> createDefault(int type); 63 64 /** 65 @param corners Source image top-left corners 66 @param images Source images 67 @param masks Image masks to update (second value in pair specifies the value which should be used 68 to detect where image is) 69 */ 70 void feed(const std::vector<Point> &corners, const std::vector<UMat> &images, 71 const std::vector<UMat> &masks); 72 /** @overload */ 73 virtual void feed(const std::vector<Point> &corners, const std::vector<UMat> &images, 74 const std::vector<std::pair<UMat,uchar> > &masks) = 0; 75 /** @brief Compensate exposure in the specified image. 76 77 @param index Image index 78 @param corner Image top-left corner 79 @param image Image to process 80 @param mask Image mask 81 */ 82 virtual void apply(int index, Point corner, InputOutputArray image, InputArray mask) = 0; 83 }; 84 85 /** @brief Stub exposure compensator which does nothing. 86 */ 87 class CV_EXPORTS NoExposureCompensator : public ExposureCompensator 88 { 89 public: 90 void feed(const std::vector<Point> &/*corners*/, const std::vector<UMat> &/*images*/, 91 const std::vector<std::pair<UMat,uchar> > &/*masks*/) { } 92 void apply(int /*index*/, Point /*corner*/, InputOutputArray /*image*/, InputArray /*mask*/) { } 93 }; 94 95 /** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image 96 intensities, see @cite BL07 and @cite WJ10 for details. 97 */ 98 class CV_EXPORTS GainCompensator : public ExposureCompensator 99 { 100 public: 101 void feed(const std::vector<Point> &corners, const std::vector<UMat> &images, 102 const std::vector<std::pair<UMat,uchar> > &masks); 103 void apply(int index, Point corner, InputOutputArray image, InputArray mask); 104 std::vector<double> gains() const; 105 106 private: 107 Mat_<double> gains_; 108 }; 109 110 /** @brief Exposure compensator which tries to remove exposure related artifacts by adjusting image block 111 intensities, see @cite UES01 for details. 112 */ 113 class CV_EXPORTS BlocksGainCompensator : public ExposureCompensator 114 { 115 public: 116 BlocksGainCompensator(int bl_width = 32, int bl_height = 32) 117 : bl_width_(bl_width), bl_height_(bl_height) {} 118 void feed(const std::vector<Point> &corners, const std::vector<UMat> &images, 119 const std::vector<std::pair<UMat,uchar> > &masks); 120 void apply(int index, Point corner, InputOutputArray image, InputArray mask); 121 122 private: 123 int bl_width_, bl_height_; 124 std::vector<UMat> gain_maps_; 125 }; 126 127 //! @} 128 129 } // namespace detail 130 } // namespace cv 131 132 #endif // __OPENCV_STITCHING_EXPOSURE_COMPENSATE_HPP__ 133
