485 lines
14 KiB
C++
485 lines
14 KiB
C++
#include "test_precomp.hpp"
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using namespace cv;
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using namespace std;
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#undef RGB
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#undef YUV
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typedef Vec3b YUV;
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typedef Vec3b RGB;
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int countOfDifferencies(const Mat& gold, const Mat& result, int maxAllowedDifference = 1)
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{
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Mat diff;
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absdiff(gold, result, diff);
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return countNonZero(diff.reshape(1) > maxAllowedDifference);
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}
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class YUVreader
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{
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public:
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virtual ~YUVreader() {}
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virtual YUV read(const Mat& yuv, int row, int col) = 0;
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virtual int channels() = 0;
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virtual Size size(Size imgSize) = 0;
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virtual bool requiresEvenHeight() { return true; }
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virtual bool requiresEvenWidth() { return true; }
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static YUVreader* getReader(int code);
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};
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class RGBwriter
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{
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public:
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virtual ~RGBwriter() {}
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virtual void write(Mat& rgb, int row, int col, const RGB& val) = 0;
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virtual int channels() = 0;
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static RGBwriter* getWriter(int code);
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};
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class GRAYwriter
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{
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public:
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virtual ~GRAYwriter() {}
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virtual void write(Mat& gray, int row, int col, const uchar& val)
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{
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gray.at<uchar>(row, col) = val;
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}
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virtual int channels() { return 1; }
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static GRAYwriter* getWriter(int code);
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};
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class RGB888Writer : public RGBwriter
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{
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void write(Mat& rgb, int row, int col, const RGB& val)
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{
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rgb.at<Vec3b>(row, col) = val;
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}
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int channels() { return 3; }
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};
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class BGR888Writer : public RGBwriter
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{
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void write(Mat& rgb, int row, int col, const RGB& val)
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{
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Vec3b tmp(val[2], val[1], val[0]);
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rgb.at<Vec3b>(row, col) = tmp;
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}
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int channels() { return 3; }
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};
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class RGBA8888Writer : public RGBwriter
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{
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void write(Mat& rgb, int row, int col, const RGB& val)
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{
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Vec4b tmp(val[0], val[1], val[2], 255);
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rgb.at<Vec4b>(row, col) = tmp;
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}
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int channels() { return 4; }
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};
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class BGRA8888Writer : public RGBwriter
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{
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void write(Mat& rgb, int row, int col, const RGB& val)
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{
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Vec4b tmp(val[2], val[1], val[0], 255);
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rgb.at<Vec4b>(row, col) = tmp;
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}
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int channels() { return 4; }
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};
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class YUV420Reader: public YUVreader
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{
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int channels() { return 1; }
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Size size(Size imgSize) { return Size(imgSize.width, imgSize.height * 3 / 2); }
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};
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class YUV422Reader: public YUVreader
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{
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int channels() { return 2; }
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Size size(Size imgSize) { return imgSize; }
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bool requiresEvenHeight() { return false; }
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};
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class NV21Reader: public YUV420Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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uchar y = yuv.ptr<uchar>(row)[col];
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uchar u = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2 + 1];
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uchar v = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2];
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return YUV(y, u, v);
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}
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};
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struct NV12Reader: public YUV420Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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uchar y = yuv.ptr<uchar>(row)[col];
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uchar u = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2];
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uchar v = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2 + 1];
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return YUV(y, u, v);
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}
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};
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class YV12Reader: public YUV420Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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int h = yuv.rows * 2 / 3;
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uchar y = yuv.ptr<uchar>(row)[col];
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uchar u = yuv.ptr<uchar>(h + (row/2 + h/2)/2)[col/2 + ((row/2 + h/2) % 2) * (yuv.cols/2)];
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uchar v = yuv.ptr<uchar>(h + row/4)[col/2 + ((row/2) % 2) * (yuv.cols/2)];
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return YUV(y, u, v);
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}
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};
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class IYUVReader: public YUV420Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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int h = yuv.rows * 2 / 3;
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uchar y = yuv.ptr<uchar>(row)[col];
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uchar u = yuv.ptr<uchar>(h + row/4)[col/2 + ((row/2) % 2) * (yuv.cols/2)];
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uchar v = yuv.ptr<uchar>(h + (row/2 + h/2)/2)[col/2 + ((row/2 + h/2) % 2) * (yuv.cols/2)];
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return YUV(y, u, v);
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}
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};
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class UYVYReader: public YUV422Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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uchar y = yuv.ptr<Vec2b>(row)[col][1];
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uchar u = yuv.ptr<Vec2b>(row)[(col/2)*2][0];
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uchar v = yuv.ptr<Vec2b>(row)[(col/2)*2 + 1][0];
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return YUV(y, u, v);
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}
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};
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class YUY2Reader: public YUV422Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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uchar y = yuv.ptr<Vec2b>(row)[col][0];
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uchar u = yuv.ptr<Vec2b>(row)[(col/2)*2][1];
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uchar v = yuv.ptr<Vec2b>(row)[(col/2)*2 + 1][1];
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return YUV(y, u, v);
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}
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};
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class YVYUReader: public YUV422Reader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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uchar y = yuv.ptr<Vec2b>(row)[col][0];
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uchar u = yuv.ptr<Vec2b>(row)[(col/2)*2 + 1][1];
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uchar v = yuv.ptr<Vec2b>(row)[(col/2)*2][1];
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return YUV(y, u, v);
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}
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};
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class YUV888Reader : public YUVreader
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{
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YUV read(const Mat& yuv, int row, int col)
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{
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return yuv.at<YUV>(row, col);
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}
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int channels() { return 3; }
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Size size(Size imgSize) { return imgSize; }
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bool requiresEvenHeight() { return false; }
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bool requiresEvenWidth() { return false; }
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};
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class YUV2RGB_Converter
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{
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public:
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RGB convert(YUV yuv)
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{
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int y = std::max(0, yuv[0] - 16);
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int u = yuv[1] - 128;
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int v = yuv[2] - 128;
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uchar r = saturate_cast<uchar>(1.164f * y + 1.596f * v);
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uchar g = saturate_cast<uchar>(1.164f * y - 0.813f * v - 0.391f * u);
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uchar b = saturate_cast<uchar>(1.164f * y + 2.018f * u);
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return RGB(r, g, b);
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}
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};
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class YUV2GRAY_Converter
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{
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public:
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uchar convert(YUV yuv)
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{
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return yuv[0];
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}
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};
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YUVreader* YUVreader::getReader(int code)
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{
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switch(code)
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{
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case CV_YUV2RGB_NV12:
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case CV_YUV2BGR_NV12:
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case CV_YUV2RGBA_NV12:
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case CV_YUV2BGRA_NV12:
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return new NV12Reader();
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case CV_YUV2RGB_NV21:
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case CV_YUV2BGR_NV21:
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case CV_YUV2RGBA_NV21:
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case CV_YUV2BGRA_NV21:
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return new NV21Reader();
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case CV_YUV2RGB_YV12:
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case CV_YUV2BGR_YV12:
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case CV_YUV2RGBA_YV12:
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case CV_YUV2BGRA_YV12:
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return new YV12Reader();
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case CV_YUV2RGB_IYUV:
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case CV_YUV2BGR_IYUV:
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case CV_YUV2RGBA_IYUV:
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case CV_YUV2BGRA_IYUV:
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return new IYUVReader();
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case CV_YUV2RGB_UYVY:
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case CV_YUV2BGR_UYVY:
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case CV_YUV2RGBA_UYVY:
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case CV_YUV2BGRA_UYVY:
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return new UYVYReader();
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//case CV_YUV2RGB_VYUY = 109,
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//case CV_YUV2BGR_VYUY = 110,
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//case CV_YUV2RGBA_VYUY = 113,
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//case CV_YUV2BGRA_VYUY = 114,
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// return ??
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case CV_YUV2RGB_YUY2:
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case CV_YUV2BGR_YUY2:
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case CV_YUV2RGBA_YUY2:
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case CV_YUV2BGRA_YUY2:
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return new YUY2Reader();
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case CV_YUV2RGB_YVYU:
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case CV_YUV2BGR_YVYU:
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case CV_YUV2RGBA_YVYU:
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case CV_YUV2BGRA_YVYU:
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return new YVYUReader();
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case CV_YUV2GRAY_420:
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return new NV21Reader();
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case CV_YUV2GRAY_UYVY:
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return new UYVYReader();
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case CV_YUV2GRAY_YUY2:
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return new YUY2Reader();
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case CV_YUV2BGR:
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case CV_YUV2RGB:
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return new YUV888Reader();
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default:
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return 0;
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}
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}
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RGBwriter* RGBwriter::getWriter(int code)
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{
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switch(code)
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{
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case CV_YUV2RGB_NV12:
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case CV_YUV2RGB_NV21:
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case CV_YUV2RGB_YV12:
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case CV_YUV2RGB_IYUV:
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case CV_YUV2RGB_UYVY:
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//case CV_YUV2RGB_VYUY:
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case CV_YUV2RGB_YUY2:
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case CV_YUV2RGB_YVYU:
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case CV_YUV2RGB:
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return new RGB888Writer();
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case CV_YUV2BGR_NV12:
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case CV_YUV2BGR_NV21:
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case CV_YUV2BGR_YV12:
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case CV_YUV2BGR_IYUV:
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case CV_YUV2BGR_UYVY:
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//case CV_YUV2BGR_VYUY:
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case CV_YUV2BGR_YUY2:
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case CV_YUV2BGR_YVYU:
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case CV_YUV2BGR:
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return new BGR888Writer();
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case CV_YUV2RGBA_NV12:
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case CV_YUV2RGBA_NV21:
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case CV_YUV2RGBA_YV12:
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case CV_YUV2RGBA_IYUV:
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case CV_YUV2RGBA_UYVY:
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//case CV_YUV2RGBA_VYUY:
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case CV_YUV2RGBA_YUY2:
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case CV_YUV2RGBA_YVYU:
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return new RGBA8888Writer();
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case CV_YUV2BGRA_NV12:
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case CV_YUV2BGRA_NV21:
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case CV_YUV2BGRA_YV12:
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case CV_YUV2BGRA_IYUV:
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case CV_YUV2BGRA_UYVY:
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//case CV_YUV2BGRA_VYUY:
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case CV_YUV2BGRA_YUY2:
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case CV_YUV2BGRA_YVYU:
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return new BGRA8888Writer();
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default:
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return 0;
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};
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}
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GRAYwriter* GRAYwriter::getWriter(int code)
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{
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switch(code)
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{
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case CV_YUV2GRAY_420:
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case CV_YUV2GRAY_UYVY:
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case CV_YUV2GRAY_YUY2:
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return new GRAYwriter();
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default:
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return 0;
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}
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}
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template<class convertor>
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void referenceYUV2RGB(const Mat& yuv, Mat& rgb, YUVreader* yuvReader, RGBwriter* rgbWriter)
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{
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convertor cvt;
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for(int row = 0; row < rgb.rows; ++row)
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for(int col = 0; col < rgb.cols; ++col)
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rgbWriter->write(rgb, row, col, cvt.convert(yuvReader->read(yuv, row, col)));
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}
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template<class convertor>
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void referenceYUV2GRAY(const Mat& yuv, Mat& rgb, YUVreader* yuvReader, GRAYwriter* grayWriter)
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{
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convertor cvt;
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for(int row = 0; row < rgb.rows; ++row)
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for(int col = 0; col < rgb.cols; ++col)
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grayWriter->write(rgb, row, col, cvt.convert(yuvReader->read(yuv, row, col)));
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}
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CV_ENUM(YUVCVTS, CV_YUV2RGB_NV12, CV_YUV2BGR_NV12, CV_YUV2RGB_NV21, CV_YUV2BGR_NV21,
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CV_YUV2RGBA_NV12, CV_YUV2BGRA_NV12, CV_YUV2RGBA_NV21, CV_YUV2BGRA_NV21,
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CV_YUV2RGB_YV12, CV_YUV2BGR_YV12, CV_YUV2RGB_IYUV, CV_YUV2BGR_IYUV,
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CV_YUV2RGBA_YV12, CV_YUV2BGRA_YV12, CV_YUV2RGBA_IYUV, CV_YUV2BGRA_IYUV,
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CV_YUV2RGB_UYVY, CV_YUV2BGR_UYVY, CV_YUV2RGBA_UYVY, CV_YUV2BGRA_UYVY,
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CV_YUV2RGB_YUY2, CV_YUV2BGR_YUY2, CV_YUV2RGB_YVYU, CV_YUV2BGR_YVYU,
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CV_YUV2RGBA_YUY2, CV_YUV2BGRA_YUY2, CV_YUV2RGBA_YVYU, CV_YUV2BGRA_YVYU,
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CV_YUV2GRAY_420, CV_YUV2GRAY_UYVY, CV_YUV2GRAY_YUY2,
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CV_YUV2BGR, CV_YUV2RGB);
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typedef ::testing::TestWithParam<YUVCVTS> Imgproc_ColorYUV;
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TEST_P(Imgproc_ColorYUV, accuracy)
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{
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int code = GetParam();
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RNG& random = theRNG();
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YUVreader* yuvReader = YUVreader::getReader(code);
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RGBwriter* rgbWriter = RGBwriter::getWriter(code);
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GRAYwriter* grayWriter = GRAYwriter::getWriter(code);
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int dcn = (rgbWriter == 0) ? grayWriter->channels() : rgbWriter->channels();
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for(int iter = 0; iter < 30; ++iter)
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{
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Size sz(random.uniform(1, 641), random.uniform(1, 481));
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if(yuvReader->requiresEvenWidth()) sz.width += sz.width % 2;
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if(yuvReader->requiresEvenHeight()) sz.height += sz.height % 2;
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Size ysz = yuvReader->size(sz);
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Mat src = Mat(ysz.height, ysz.width * yuvReader->channels(), CV_8UC1).reshape(yuvReader->channels());
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Mat dst = Mat(sz.height, sz.width * dcn, CV_8UC1).reshape(dcn);
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Mat gold(sz, CV_8UC(dcn));
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random.fill(src, RNG::UNIFORM, 0, 256);
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if(rgbWriter)
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referenceYUV2RGB<YUV2RGB_Converter>(src, gold, yuvReader, rgbWriter);
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else
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referenceYUV2GRAY<YUV2GRAY_Converter>(src, gold, yuvReader, grayWriter);
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cv::cvtColor(src, dst, code, -1);
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EXPECT_EQ(0, countOfDifferencies(gold, dst));
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}
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}
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TEST_P(Imgproc_ColorYUV, roi_accuracy)
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{
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int code = GetParam();
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RNG& random = theRNG();
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YUVreader* yuvReader = YUVreader::getReader(code);
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RGBwriter* rgbWriter = RGBwriter::getWriter(code);
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GRAYwriter* grayWriter = GRAYwriter::getWriter(code);
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int dcn = (rgbWriter == 0) ? grayWriter->channels() : rgbWriter->channels();
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for(int iter = 0; iter < 30; ++iter)
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{
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Size sz(random.uniform(1, 641), random.uniform(1, 481));
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if(yuvReader->requiresEvenWidth()) sz.width += sz.width % 2;
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if(yuvReader->requiresEvenHeight()) sz.height += sz.height % 2;
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int roi_offset_top = random.uniform(0, 6);
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int roi_offset_bottom = random.uniform(0, 6);
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int roi_offset_left = random.uniform(0, 6);
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int roi_offset_right = random.uniform(0, 6);
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Size ysz = yuvReader->size(sz);
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Mat src_full(ysz.height + roi_offset_top + roi_offset_bottom, ysz.width + roi_offset_left + roi_offset_right, CV_8UC(yuvReader->channels()));
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Mat dst_full(sz.height + roi_offset_left + roi_offset_right, sz.width + roi_offset_top + roi_offset_bottom, CV_8UC(dcn), Scalar::all(0));
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Mat gold_full(dst_full.size(), CV_8UC(dcn), Scalar::all(0));
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random.fill(src_full, RNG::UNIFORM, 0, 256);
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Mat src = src_full(Range(roi_offset_top, roi_offset_top + ysz.height), Range(roi_offset_left, roi_offset_left + ysz.width));
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Mat dst = dst_full(Range(roi_offset_left, roi_offset_left + sz.height), Range(roi_offset_top, roi_offset_top + sz.width));
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Mat gold = gold_full(Range(roi_offset_left, roi_offset_left + sz.height), Range(roi_offset_top, roi_offset_top + sz.width));
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if(rgbWriter)
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referenceYUV2RGB<YUV2RGB_Converter>(src, gold, yuvReader, rgbWriter);
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else
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referenceYUV2GRAY<YUV2GRAY_Converter>(src, gold, yuvReader, grayWriter);
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cv::cvtColor(src, dst, code, -1);
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EXPECT_EQ(0, countOfDifferencies(gold_full, dst_full));
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}
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}
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|
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INSTANTIATE_TEST_CASE_P(cvt420, Imgproc_ColorYUV,
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::testing::Values((int)CV_YUV2RGB_NV12, (int)CV_YUV2BGR_NV12, (int)CV_YUV2RGB_NV21, (int)CV_YUV2BGR_NV21,
|
|
(int)CV_YUV2RGBA_NV12, (int)CV_YUV2BGRA_NV12, (int)CV_YUV2RGBA_NV21, (int)CV_YUV2BGRA_NV21,
|
|
(int)CV_YUV2RGB_YV12, (int)CV_YUV2BGR_YV12, (int)CV_YUV2RGB_IYUV, (int)CV_YUV2BGR_IYUV,
|
|
(int)CV_YUV2RGBA_YV12, (int)CV_YUV2BGRA_YV12, (int)CV_YUV2RGBA_IYUV, (int)CV_YUV2BGRA_IYUV,
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|
(int)CV_YUV2GRAY_420));
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|
|
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INSTANTIATE_TEST_CASE_P(cvt422, Imgproc_ColorYUV,
|
|
::testing::Values((int)CV_YUV2RGB_UYVY, (int)CV_YUV2BGR_UYVY, (int)CV_YUV2RGBA_UYVY, (int)CV_YUV2BGRA_UYVY,
|
|
(int)CV_YUV2RGB_YUY2, (int)CV_YUV2BGR_YUY2, (int)CV_YUV2RGB_YVYU, (int)CV_YUV2BGR_YVYU,
|
|
(int)CV_YUV2RGBA_YUY2, (int)CV_YUV2BGRA_YUY2, (int)CV_YUV2RGBA_YVYU, (int)CV_YUV2BGRA_YVYU,
|
|
(int)CV_YUV2GRAY_UYVY, (int)CV_YUV2GRAY_YUY2));
|