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Fixed conversions from YV12 and IYUV on non-continuous input. Added accuracy and performance tests.

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This commit is contained in:
Andrey Kamaev 2012-03-31 22:30:18 +00:00
parent a22641aa9c
commit 470f6fafeb
3 changed files with 744 additions and 254 deletions
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21
modules/imgproc/perf/perf_cvt_color.cpp
View File

@ -106,7 +106,9 @@ CV_ENUM(CvtMode,
CV_YUV2BGR, CV_YUV2RGB, CX_YUV2BGRA, CX_YUV2RGBA
)
CV_ENUM(CvtMode2, CV_YUV2BGR_NV12, CV_YUV2BGRA_NV12, CV_YUV2RGB_NV12, CV_YUV2RGBA_NV12, CV_YUV420sp2BGR, CV_YUV420sp2BGRA, CV_YUV420sp2RGB, CV_YUV420sp2RGBA)
CV_ENUM(CvtMode2, CV_YUV2BGR_NV12, CV_YUV2BGRA_NV12, CV_YUV2RGB_NV12, CV_YUV2RGBA_NV12, CV_YUV2BGR_NV21, CV_YUV2BGRA_NV21, CV_YUV2RGB_NV21, CV_YUV2RGBA_NV21,
CV_YUV2BGR_YV12, CV_YUV2BGRA_YV12, CV_YUV2RGB_YV12, CV_YUV2RGBA_YV12, CV_YUV2BGR_IYUV, CV_YUV2BGRA_IYUV, CV_YUV2RGB_IYUV, CV_YUV2RGBA_IYUV,
COLOR_YUV2GRAY_420)
struct ChPair
{
@ -120,6 +122,7 @@ ChPair getConversionInfo(int cvtMode)
{
case CV_BayerBG2GRAY: case CV_BayerGB2GRAY:
case CV_BayerGR2GRAY: case CV_BayerRG2GRAY:
case CV_YUV2GRAY_420:
return ChPair(1,1);
case CV_GRAY2BGR555: case CV_GRAY2BGR565:
return ChPair(1,2);
@ -127,13 +130,17 @@ ChPair getConversionInfo(int cvtMode)
case CV_BayerGB2BGR: case CV_BayerGB2BGR_VNG:
case CV_BayerGR2BGR: case CV_BayerGR2BGR_VNG:
case CV_BayerRG2BGR: case CV_BayerRG2BGR_VNG:
case CV_GRAY2BGR: case CV_YUV2BGR_NV12:
case CV_YUV2RGB_NV12: case CV_YUV420sp2BGR:
case CV_YUV420sp2RGB:
case CV_GRAY2BGR:
case CV_YUV2BGR_NV12: case CV_YUV2RGB_NV12:
case CV_YUV2BGR_NV21: case CV_YUV2RGB_NV21:
case CV_YUV2BGR_YV12: case CV_YUV2RGB_YV12:
case CV_YUV2BGR_IYUV: case CV_YUV2RGB_IYUV:
return ChPair(1,3);
case CV_GRAY2BGRA: case CV_YUV2BGRA_NV12:
case CV_YUV2RGBA_NV12: case CV_YUV420sp2BGRA:
case CV_YUV420sp2RGBA:
case CV_GRAY2BGRA:
case CV_YUV2BGRA_NV12: case CV_YUV2RGBA_NV12:
case CV_YUV2BGRA_NV21: case CV_YUV2RGBA_NV21:
case CV_YUV2BGRA_YV12: case CV_YUV2RGBA_YV12:
case CV_YUV2BGRA_IYUV: case CV_YUV2RGBA_IYUV:
return ChPair(1,4);
case CV_BGR5552GRAY: case CV_BGR5652GRAY:
return ChPair(2,1);

92
modules/imgproc/src/color.cpp
View File

@ -2829,22 +2829,18 @@ struct YUV420p2RGB888Invoker
Mat* dst;
const uchar* my1, *mu, *mv;
int width, stride;
int ustepIdx, vstepIdx;
YUV420p2RGB888Invoker(Mat* _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v)
: dst(_dst), my1(_y1), mu(_u), mv(_v), width(_dst->cols), stride(_stride) {}
YUV420p2RGB888Invoker(Mat* _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v, int _ustepIdx, int _vstepIdx)
: dst(_dst), my1(_y1), mu(_u), mv(_v), width(_dst->cols), stride(_stride), ustepIdx(_ustepIdx), vstepIdx(_vstepIdx) {}
void operator()(const BlockedRange& range) const
{
const int rangeBegin = range.begin() * 2;
const int rangeEnd = range.end() * 2;
//R = 1.164(Y - 16) + 1.596(V - 128)
//G = 1.164(Y - 16) - 0.813(V - 128) - 0.391(U - 128)
//B = 1.164(Y - 16) + 2.018(U - 128)
//R = (1220542(Y - 16) + 1673527(V - 128) + (1 << 19)) >> 20
//G = (1220542(Y - 16) - 852492(V - 128) - 409993(U - 128) + (1 << 19)) >> 20
//B = (1220542(Y - 16) + 2116026(U - 128) + (1 << 19)) >> 20
size_t uvsteps[2] = {width/2, stride - width/2};
int usIdx = ustepIdx, vsIdx = vstepIdx;
const int cY = 1220542;
const int cUB = 2116026;
@ -2854,10 +2850,16 @@ struct YUV420p2RGB888Invoker
const int YUV420_SHIFT = 20;
const uchar* y1 = my1 + rangeBegin * stride;
const uchar* u1 = mu + (range.begin() / 2) * stride + (range.begin() % 2) * width/2;
const uchar* v1 = mv + (range.begin() / 2) * stride + (range.begin() % 2) * width/2;
const uchar* u1 = mu + (range.begin() / 2) * stride;
const uchar* v1 = mv + (range.begin() / 2) * stride;
for (int j = rangeBegin; j < rangeEnd; j += 2, y1 += stride * 2, u1 += width / 2, v1 += width / 2)
if(range.begin() % 2 == 1)
{
u1 += uvsteps[(usIdx++) & 1];
v1 += uvsteps[(vsIdx++) & 1];
}
for (int j = rangeBegin; j < rangeEnd; j += 2, y1 += stride * 2, u1 += uvsteps[(usIdx++) & 1], v1 += uvsteps[(vsIdx++) & 1])
{
uchar* row1 = dst->ptr<uchar>(j);
uchar* row2 = dst->ptr<uchar>(j + 1);
@ -2892,12 +2894,6 @@ struct YUV420p2RGB888Invoker
row2[4] = saturate_cast<uchar>((y11 + guv) >> YUV420_SHIFT);
row2[3+bIdx] = saturate_cast<uchar>((y11 + buv) >> YUV420_SHIFT);
}
if(j % 4 == 2)
{
u1 += stride - width;
v1 += stride - width;
}
}
}
};
@ -2908,23 +2904,16 @@ struct YUV420p2RGBA8888Invoker
Mat* dst;
const uchar* my1, *mu, *mv;
int width, stride;
int ustepIdx, vstepIdx;
YUV420p2RGBA8888Invoker(Mat* _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v)
: dst(_dst), my1(_y1), mu(_u), mv(_v), width(_dst->cols), stride(_stride) {}
YUV420p2RGBA8888Invoker(Mat* _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v, int _ustepIdx, int _vstepIdx)
: dst(_dst), my1(_y1), mu(_u), mv(_v), width(_dst->cols), stride(_stride), ustepIdx(_ustepIdx), vstepIdx(_vstepIdx) {}
void operator()(const BlockedRange& range) const
{
int rangeBegin = range.begin() * 2;
int rangeEnd = range.end() * 2;
//R = 1.164(Y - 16) + 1.596(V - 128)
//G = 1.164(Y - 16) - 0.813(V - 128) - 0.391(U - 128)
//B = 1.164(Y - 16) + 2.018(U - 128)
//R = (1220542(Y - 16) + 1673527(V - 128) + (1 << 19)) >> 20
//G = (1220542(Y - 16) - 852492(V - 128) - 409993(U - 128) + (1 << 19)) >> 20
//B = (1220542(Y - 16) + 2116026(U - 128) + (1 << 19)) >> 20
const int cY = 1220542;
const int cUB = 2116026;
const int cUG = -409993;
@ -2932,11 +2921,20 @@ struct YUV420p2RGBA8888Invoker
const int cVR = 1673527;
const int YUV420_SHIFT = 20;
const uchar* y1 = my1 + rangeBegin * stride;
const uchar* u1 = mu + (range.begin() / 2) * stride + (range.begin() % 2) * width/2;
const uchar* v1 = mv + (range.begin() / 2) * stride + (range.begin() % 2) * width/2;
size_t uvsteps[2] = {width/2, stride - width/2};
int usIdx = ustepIdx, vsIdx = vstepIdx;
for (int j = rangeBegin; j < rangeEnd; j += 2, y1 += stride * 2, u1 += width / 2, v1 += width / 2)
const uchar* y1 = my1 + rangeBegin * stride;
const uchar* u1 = mu + (range.begin() / 2) * stride;
const uchar* v1 = mv + (range.begin() / 2) * stride;
if(range.begin() % 2 == 1)
{
u1 += uvsteps[(usIdx++) & 1];
v1 += uvsteps[(vsIdx++) & 1];
}
for (int j = rangeBegin; j < rangeEnd; j += 2, y1 += stride * 2, u1 += uvsteps[(usIdx++) & 1], v1 += uvsteps[(vsIdx++) & 1])
{
uchar* row1 = dst->ptr<uchar>(j);
uchar* row2 = dst->ptr<uchar>(j + 1);
@ -2975,12 +2973,6 @@ struct YUV420p2RGBA8888Invoker
row2[4+bIdx] = saturate_cast<uchar>((y11 + buv) >> YUV420_SHIFT);
row2[7] = uchar(0xff);
}
if(j % 4 == 2)
{
u1 += stride - width;
v1 += stride - width;
}
}
}
};
@ -3012,9 +3004,9 @@ inline void cvtYUV420sp2RGBA(Mat& _dst, int _stride, const uchar* _y1, const uch
}
template<int bIdx>
inline void cvtYUV420p2RGB(Mat& _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v)
inline void cvtYUV420p2RGB(Mat& _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v, int ustepIdx, int vstepIdx)
{
YUV420p2RGB888Invoker<bIdx> converter(&_dst, _stride, _y1, _u, _v);
YUV420p2RGB888Invoker<bIdx> converter(&_dst, _stride, _y1, _u, _v, ustepIdx, vstepIdx);
#ifdef HAVE_TBB
if (_dst.total() >= MIN_SIZE_FOR_PARALLEL_YUV420_CONVERSION)
parallel_for(BlockedRange(0, _dst.rows/2), converter);
@ -3024,9 +3016,9 @@ inline void cvtYUV420p2RGB(Mat& _dst, int _stride, const uchar* _y1, const uchar
}
template<int bIdx>
inline void cvtYUV420p2RGBA(Mat& _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v)
inline void cvtYUV420p2RGBA(Mat& _dst, int _stride, const uchar* _y1, const uchar* _u, const uchar* _v, int ustepIdx, int vstepIdx)
{
YUV420p2RGBA8888Invoker<bIdx> converter(&_dst, _stride, _y1, _u, _v);
YUV420p2RGBA8888Invoker<bIdx> converter(&_dst, _stride, _y1, _u, _v, ustepIdx, vstepIdx);
#ifdef HAVE_TBB
if (_dst.total() >= MIN_SIZE_FOR_PARALLEL_YUV420_CONVERSION)
parallel_for(BlockedRange(0, _dst.rows/2), converter);
@ -3461,15 +3453,19 @@ void cv::cvtColor( InputArray _src, OutputArray _dst, int code, int dcn )
int srcstep = (int)src.step;
const uchar* y = src.ptr();
const uchar* u = y + srcstep * dstSz.height;
const uchar* v = u + (srcstep * dstSz.height / 4);
if(uidx == 1) std::swap(u ,v);
const uchar* v = y + srcstep * (dstSz.height + dstSz.height/4) + (dstSz.width/2) * ((dstSz.height % 4)/2);
int ustepIdx = 0;
int vstepIdx = dstSz.height % 4 == 2 ? 1 : 0;
if(uidx == 1) { std::swap(u ,v), std::swap(ustepIdx, vstepIdx); };
switch(dcn*10 + bidx)
{
case 30: cvtYUV420p2RGB<0>(dst, srcstep, y, u, v); break;
case 32: cvtYUV420p2RGB<2>(dst, srcstep, y, u, v); break;
case 40: cvtYUV420p2RGBA<0>(dst, srcstep, y, u, v); break;
case 42: cvtYUV420p2RGBA<2>(dst, srcstep, y, u, v); break;
case 30: cvtYUV420p2RGB<0>(dst, srcstep, y, u, v, ustepIdx, vstepIdx); break;
case 32: cvtYUV420p2RGB<2>(dst, srcstep, y, u, v, ustepIdx, vstepIdx); break;
case 40: cvtYUV420p2RGBA<0>(dst, srcstep, y, u, v, ustepIdx, vstepIdx); break;
case 42: cvtYUV420p2RGBA<2>(dst, srcstep, y, u, v, ustepIdx, vstepIdx); break;
default: CV_Error( CV_StsBadFlag, "Unknown/unsupported color conversion code" ); break;
};
}

487
modules/imgproc/test/test_cvtyuv.cpp Normal file
View File

@ -0,0 +1,487 @@
#include "test_precomp.hpp"
using namespace cv;
using namespace std;
#undef RGB
#undef YUV
typedef Vec3b YUV;
typedef Vec3b RGB;
int countOfDifferencies(const Mat& gold, const Mat& result, int maxAllowedDifference = 1)
{
Mat diff;
absdiff(gold, result, diff);
return countNonZero(diff.reshape(1) > maxAllowedDifference);
}
class YUVreader
{
public:
virtual ~YUVreader() {}
virtual YUV read(const Mat& yuv, int row, int col) = 0;
virtual int channels() = 0;
virtual Size size(Size imgSize) = 0;
virtual bool requiresEvenHeight() { return true; }
virtual bool requiresEvenWidth() { return true; }
static YUVreader* getReader(int code);
};
class RGBwriter
{
public:
virtual ~RGBwriter() {}
virtual void write(Mat& rgb, int row, int col, const RGB& val) = 0;
virtual int channels() = 0;
static RGBwriter* getWriter(int code);
};
class GRAYwriter
{
public:
virtual ~GRAYwriter() {}
virtual void write(Mat& gray, int row, int col, const uchar& val)
{
gray.at<uchar>(row, col) = val;
}
virtual int channels() { return 1; }
static GRAYwriter* getWriter(int code);
};
class RGB888Writer : public RGBwriter
{
void write(Mat& rgb, int row, int col, const RGB& val)
{
rgb.at<Vec3b>(row, col) = val;
}
int channels() { return 3; }
};
class BGR888Writer : public RGBwriter
{
void write(Mat& rgb, int row, int col, const RGB& val)
{
Vec3b tmp(val[2], val[1], val[0]);
rgb.at<Vec3b>(row, col) = tmp;
}
int channels() { return 3; }
};
class RGBA8888Writer : public RGBwriter
{
void write(Mat& rgb, int row, int col, const RGB& val)
{
Vec4b tmp(val[0], val[1], val[2], 255);
rgb.at<Vec4b>(row, col) = tmp;
}
int channels() { return 4; }
};
class BGRA8888Writer : public RGBwriter
{
void write(Mat& rgb, int row, int col, const RGB& val)
{
Vec4b tmp(val[2], val[1], val[0], 255);
rgb.at<Vec4b>(row, col) = tmp;
}
int channels() { return 4; }
};
class YUV420Reader: public YUVreader
{
int channels() { return 1; }
Size size(Size imgSize) { return Size(imgSize.width, imgSize.height * 3 / 2); }
};
class YUV422Reader: public YUVreader
{
int channels() { return 2; }
Size size(Size imgSize) { return imgSize; }
bool requiresEvenHeight() { return false; }
};
class NV21Reader: public YUV420Reader
{
YUV read(const Mat& yuv, int row, int col)
{
uchar y = yuv.ptr<uchar>(row)[col];
uchar u = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2 + 1];
uchar v = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2];
return YUV(y, u, v);
}
};
struct NV12Reader: public YUV420Reader
{
YUV read(const Mat& yuv, int row, int col)
{
uchar y = yuv.ptr<uchar>(row)[col];
uchar u = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2];
uchar v = yuv.ptr<uchar>(yuv.rows * 2 / 3 + row/2)[(col/2)*2 + 1];
return YUV(y, u, v);
}
};
class YV12Reader: public YUV420Reader
{
YUV read(const Mat& yuv, int row, int col)
{
int h = yuv.rows * 2 / 3;
uchar y = yuv.ptr<uchar>(row)[col];
uchar u = yuv.ptr<uchar>(h + (row/2 + h/2)/2)[col/2 + ((row/2 + h/2) % 2) * (yuv.cols/2)];
uchar v = yuv.ptr<uchar>(h + row/4)[col/2 + ((row/2) % 2) * (yuv.cols/2)];
return YUV(y, u, v);
}
};
class IYUVReader: public YUV420Reader
{
YUV read(const Mat& yuv, int row, int col)
{
int h = yuv.rows * 2 / 3;
uchar y = yuv.ptr<uchar>(row)[col];
uchar u = yuv.ptr<uchar>(h + row/4)[col/2 + ((row/2) % 2) * (yuv.cols/2)];
uchar v = yuv.ptr<uchar>(h + (row/2 + h/2)/2)[col/2 + ((row/2 + h/2) % 2) * (yuv.cols/2)];
return YUV(y, u, v);
}
};
class UYVYReader: public YUV422Reader
{
YUV read(const Mat& yuv, int row, int col)
{
uchar y = yuv.ptr<Vec2b>(row)[col][1];
uchar u = yuv.ptr<Vec2b>(row)[(col/2)*2][0];
uchar v = yuv.ptr<Vec2b>(row)[(col/2)*2 + 1][0];
return YUV(y, u, v);
}
};
class YUY2Reader: public YUV422Reader
{
YUV read(const Mat& yuv, int row, int col)
{
uchar y = yuv.ptr<Vec2b>(row)[col][0];
uchar u = yuv.ptr<Vec2b>(row)[(col/2)*2][1];
uchar v = yuv.ptr<Vec2b>(row)[(col/2)*2 + 1][1];
return YUV(y, u, v);
}
};
class YVYUReader: public YUV422Reader
{
YUV read(const Mat& yuv, int row, int col)
{
uchar y = yuv.ptr<Vec2b>(row)[col][0];
uchar u = yuv.ptr<Vec2b>(row)[(col/2)*2 + 1][1];
uchar v = yuv.ptr<Vec2b>(row)[(col/2)*2][1];
return YUV(y, u, v);
}
};
class YUV888Reader : public YUVreader
{
YUV read(const Mat& yuv, int row, int col)
{
return yuv.at<YUV>(row, col);
}
int channels() { return 3; }
Size size(Size imgSize) { return imgSize; }
bool requiresEvenHeight() { return false; }
bool requiresEvenWidth() { return false; }
};
class YUV2RGB_Converter
{
public:
RGB convert(YUV yuv)
{
int y = std::max(0, yuv[0] - 16);
int u = yuv[1] - 128;
int v = yuv[2] - 128;
uchar r = saturate_cast<uchar>(1.164f * y + 1.596f * v);
uchar g = saturate_cast<uchar>(1.164f * y - 0.813f * v - 0.391f * u);
uchar b = saturate_cast<uchar>(1.164f * y + 2.018f * u);
return RGB(r, g, b);
}
};
class YUV2GRAY_Converter
{
public:
uchar convert(YUV yuv)
{
return yuv[0];
}
};
YUVreader* YUVreader::getReader(int code)
{
switch(code)
{
case CV_YUV2RGB_NV12:
case CV_YUV2BGR_NV12:
case CV_YUV2RGBA_NV12:
case CV_YUV2BGRA_NV12:
return new NV12Reader();
case CV_YUV2RGB_NV21:
case CV_YUV2BGR_NV21:
case CV_YUV2RGBA_NV21:
case CV_YUV2BGRA_NV21:
return new NV21Reader();
case CV_YUV2RGB_YV12:
case CV_YUV2BGR_YV12:
case CV_YUV2RGBA_YV12:
case CV_YUV2BGRA_YV12:
return new YV12Reader();
case CV_YUV2RGB_IYUV:
case CV_YUV2BGR_IYUV:
case CV_YUV2RGBA_IYUV:
case CV_YUV2BGRA_IYUV:
return new IYUVReader();
case CV_YUV2RGB_UYVY:
case CV_YUV2BGR_UYVY:
case CV_YUV2RGBA_UYVY:
case CV_YUV2BGRA_UYVY:
return new UYVYReader();
//case CV_YUV2RGB_VYUY = 109,
//case CV_YUV2BGR_VYUY = 110,
//case CV_YUV2RGBA_VYUY = 113,
//case CV_YUV2BGRA_VYUY = 114,
// return ??
case CV_YUV2RGB_YUY2:
case CV_YUV2BGR_YUY2:
case CV_YUV2RGBA_YUY2:
case CV_YUV2BGRA_YUY2:
return new YUY2Reader();
case CV_YUV2RGB_YVYU:
case CV_YUV2BGR_YVYU:
case CV_YUV2RGBA_YVYU:
case CV_YUV2BGRA_YVYU:
return new YVYUReader();
case CV_YUV2GRAY_420:
return new NV21Reader();
case CV_YUV2GRAY_UYVY:
return new UYVYReader();
case CV_YUV2GRAY_YUY2:
return new YUY2Reader();
case CV_YUV2BGR:
case CV_YUV2RGB:
return new YUV888Reader();
default:
return 0;
}
}
RGBwriter* RGBwriter::getWriter(int code)
{
switch(code)
{
case CV_YUV2RGB_NV12:
case CV_YUV2RGB_NV21:
case CV_YUV2RGB_YV12:
case CV_YUV2RGB_IYUV:
case CV_YUV2RGB_UYVY:
//case CV_YUV2RGB_VYUY:
case CV_YUV2RGB_YUY2:
case CV_YUV2RGB_YVYU:
case CV_YUV2RGB:
return new RGB888Writer();
case CV_YUV2BGR_NV12:
case CV_YUV2BGR_NV21:
case CV_YUV2BGR_YV12:
case CV_YUV2BGR_IYUV:
case CV_YUV2BGR_UYVY:
//case CV_YUV2BGR_VYUY:
case CV_YUV2BGR_YUY2:
case CV_YUV2BGR_YVYU:
case CV_YUV2BGR:
return new BGR888Writer();
case CV_YUV2RGBA_NV12:
case CV_YUV2RGBA_NV21:
case CV_YUV2RGBA_YV12:
case CV_YUV2RGBA_IYUV:
case CV_YUV2RGBA_UYVY:
//case CV_YUV2RGBA_VYUY:
case CV_YUV2RGBA_YUY2:
case CV_YUV2RGBA_YVYU:
return new RGBA8888Writer();
case CV_YUV2BGRA_NV12:
case CV_YUV2BGRA_NV21:
case CV_YUV2BGRA_YV12:
case CV_YUV2BGRA_IYUV:
case CV_YUV2BGRA_UYVY:
//case CV_YUV2BGRA_VYUY:
case CV_YUV2BGRA_YUY2:
case CV_YUV2BGRA_YVYU:
return new BGRA8888Writer();
default:
return 0;
};
}
GRAYwriter* GRAYwriter::getWriter(int code)
{
switch(code)
{
case CV_YUV2GRAY_420:
case CV_YUV2GRAY_UYVY:
case CV_YUV2GRAY_YUY2:
return new GRAYwriter();
default:
return 0;
}
}
template<class convertor>
void referenceYUV2RGB(const Mat& yuv, Mat& rgb, YUVreader* yuvReader, RGBwriter* rgbWriter)
{
convertor cvt;
for(int row = 0; row < rgb.rows; ++row)
for(int col = 0; col < rgb.cols; ++col)
rgbWriter->write(rgb, row, col, cvt.convert(yuvReader->read(yuv, row, col)));
}
template<class convertor>
void referenceYUV2GRAY(const Mat& yuv, Mat& rgb, YUVreader* yuvReader, GRAYwriter* grayWriter)
{
convertor cvt;
for(int row = 0; row < rgb.rows; ++row)
for(int col = 0; col < rgb.cols; ++col)
grayWriter->write(rgb, row, col, cvt.convert(yuvReader->read(yuv, row, col)));
}
CV_ENUM(YUVCVTS, CV_YUV2RGB_NV12, CV_YUV2BGR_NV12, CV_YUV2RGB_NV21, CV_YUV2BGR_NV21,
CV_YUV2RGBA_NV12, CV_YUV2BGRA_NV12, CV_YUV2RGBA_NV21, CV_YUV2BGRA_NV21,
CV_YUV2RGB_YV12, CV_YUV2BGR_YV12, CV_YUV2RGB_IYUV, CV_YUV2BGR_IYUV,
CV_YUV2RGBA_YV12, CV_YUV2BGRA_YV12, CV_YUV2RGBA_IYUV, CV_YUV2BGRA_IYUV,
CV_YUV2RGB_UYVY, CV_YUV2BGR_UYVY, CV_YUV2RGBA_UYVY, CV_YUV2BGRA_UYVY,
CV_YUV2RGB_YUY2, CV_YUV2BGR_YUY2, CV_YUV2RGB_YVYU, CV_YUV2BGR_YVYU,
CV_YUV2RGBA_YUY2, CV_YUV2BGRA_YUY2, CV_YUV2RGBA_YVYU, CV_YUV2BGRA_YVYU,
CV_YUV2GRAY_420, CV_YUV2GRAY_UYVY, CV_YUV2GRAY_YUY2,
CV_YUV2BGR, CV_YUV2RGB);
typedef ::testing::TestWithParam<YUVCVTS> Imgproc_ColorYUV;
TEST_P(Imgproc_ColorYUV, accuracy)
{
int code = GetParam();
RNG& random = theRNG();
YUVreader* yuvReader = YUVreader::getReader(code);
RGBwriter* rgbWriter = RGBwriter::getWriter(code);
GRAYwriter* grayWriter = GRAYwriter::getWriter(code);
int dcn = (rgbWriter == 0) ? grayWriter->channels() : rgbWriter->channels();
for(int iter = 0; iter < 30; ++iter)
{
Size sz(random.uniform(1, 641), random.uniform(1, 481));
if(yuvReader->requiresEvenWidth()) sz.width += sz.width % 2;
if(yuvReader->requiresEvenHeight()) sz.height += sz.height % 2;
Size ysz = yuvReader->size(sz);
Mat src = Mat(ysz.height, ysz.width * yuvReader->channels(), CV_8UC1).reshape(yuvReader->channels());
Mat dst = Mat(sz.height, sz.width * dcn, CV_8UC1).reshape(dcn);
Mat gold(sz, CV_8UC(dcn));
random.fill(src, RNG::UNIFORM, 0, 256);
if(rgbWriter)
referenceYUV2RGB<YUV2RGB_Converter>(src, gold, yuvReader, rgbWriter);
else
referenceYUV2GRAY<YUV2GRAY_Converter>(src, gold, yuvReader, grayWriter);
cv::cvtColor(src, dst, code, -1);
EXPECT_EQ(0, countOfDifferencies(gold, dst));
}
}
TEST_P(Imgproc_ColorYUV, roi_accuracy)
{
int code = GetParam();
RNG& random = theRNG();
YUVreader* yuvReader = YUVreader::getReader(code);
RGBwriter* rgbWriter = RGBwriter::getWriter(code);
GRAYwriter* grayWriter = GRAYwriter::getWriter(code);
int dcn = (rgbWriter == 0) ? grayWriter->channels() : rgbWriter->channels();
for(int iter = 0; iter < 30; ++iter)
{
Size sz(random.uniform(1, 641), random.uniform(1, 481));
if(yuvReader->requiresEvenWidth()) sz.width += sz.width % 2;
if(yuvReader->requiresEvenHeight()) sz.height += sz.height % 2;
int roi_offset_top = random.uniform(0, 6);
int roi_offset_bottom = random.uniform(0, 6);
int roi_offset_left = random.uniform(0, 6);
int roi_offset_right = random.uniform(0, 6);
Size ysz = yuvReader->size(sz);
Mat src_full(ysz.height + roi_offset_top + roi_offset_bottom, ysz.width + roi_offset_left + roi_offset_right, CV_8UC(yuvReader->channels()));
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));
Mat gold_full(dst_full.size(), CV_8UC(dcn), Scalar::all(0));
random.fill(src_full, RNG::UNIFORM, 0, 256);
Mat src = src_full(Range(roi_offset_top, roi_offset_top + ysz.height), Range(roi_offset_left, roi_offset_left + ysz.width));
Mat dst = dst_full(Range(roi_offset_left, roi_offset_left + sz.height), Range(roi_offset_top, roi_offset_top + sz.width));
Mat gold = gold_full(Range(roi_offset_left, roi_offset_left + sz.height), Range(roi_offset_top, roi_offset_top + sz.width));
if(rgbWriter)
referenceYUV2RGB<YUV2RGB_Converter>(src, gold, yuvReader, rgbWriter);
else
referenceYUV2GRAY<YUV2GRAY_Converter>(src, gold, yuvReader, grayWriter);
cv::cvtColor(src, dst, code, -1);
EXPECT_EQ(0, countOfDifferencies(gold_full, dst_full));
}
}
INSTANTIATE_TEST_CASE_P(cvt420, Imgproc_ColorYUV,
::testing::Values(CV_YUV2RGB_NV12, CV_YUV2BGR_NV12, CV_YUV2RGB_NV21, CV_YUV2BGR_NV21,
CV_YUV2RGBA_NV12, CV_YUV2BGRA_NV12, CV_YUV2RGBA_NV21, CV_YUV2BGRA_NV21,
CV_YUV2RGB_YV12, CV_YUV2BGR_YV12, CV_YUV2RGB_IYUV, CV_YUV2BGR_IYUV,
CV_YUV2RGBA_YV12, CV_YUV2BGRA_YV12, CV_YUV2RGBA_IYUV, CV_YUV2BGRA_IYUV,
CV_YUV2GRAY_420));
INSTANTIATE_TEST_CASE_P(DISABLED_cvt888, Imgproc_ColorYUV,
::testing::Values(CV_YUV2BGR, CV_YUV2RGB));
INSTANTIATE_TEST_CASE_P(DISABLED_cvt422, Imgproc_ColorYUV,
::testing::Values(CV_YUV2RGB_UYVY, CV_YUV2BGR_UYVY, CV_YUV2RGBA_UYVY, CV_YUV2BGRA_UYVY,
CV_YUV2RGB_YUY2, CV_YUV2BGR_YUY2, CV_YUV2RGB_YVYU, CV_YUV2BGR_YVYU,
CV_YUV2RGBA_YUY2, CV_YUV2BGRA_YUY2, CV_YUV2RGBA_YVYU, CV_YUV2BGRA_YVYU,
CV_YUV2GRAY_UYVY, CV_YUV2GRAY_YUY2));