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RGB[A] <-> XYZ

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This commit is contained in:
Ilya Lavrenov 2013-11-27 19:37:27 +04:00
parent 65ee06eb2b
commit ab9b883c69
4 changed files with 132 additions and 94 deletions
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96
modules/imgproc/src/color.cpp
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@ -2784,6 +2784,102 @@ static bool ocl_cvtColor( InputArray _src, OutputArray _dst, int code, int dcn )
format("-D depth=%d -D scn=%d -D dcn=%d -D bidx=%d", depth, scn, dcn, bidx)); format("-D depth=%d -D scn=%d -D dcn=%d -D bidx=%d", depth, scn, dcn, bidx));
break; break;
} }
case COLOR_BGR2XYZ: case COLOR_RGB2XYZ:
{
CV_Assert(scn == 3 || scn == 4);
bidx = code == COLOR_BGR2XYZ ? 0 : 2;
UMat c;
if (depth == CV_32F)
{
float coeffs[] =
{
0.412453f, 0.357580f, 0.180423f,
0.212671f, 0.715160f, 0.072169f,
0.019334f, 0.119193f, 0.950227f
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[2]);
std::swap(coeffs[3], coeffs[5]);
std::swap(coeffs[6], coeffs[8]);
}
Mat(1, 9, CV_32FC1, &coeffs[0]).copyTo(c);
}
else
{
int coeffs[] =
{
1689, 1465, 739,
871, 2929, 296,
79, 488, 3892
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[2]);
std::swap(coeffs[3], coeffs[5]);
std::swap(coeffs[6], coeffs[8]);
}
Mat(1, 9, CV_32SC1, &coeffs[0]).copyTo(c);
}
_dst.create(dstSz, CV_MAKETYPE(depth, 3));
dst = _dst.getUMat();
k.create("RGB2XYZ", ocl::imgproc::cvtcolor_oclsrc,
format("-D depth=%d -D scn=%d -D dcn=3 -D bidx=%d", depth, scn, bidx));
k.args(ocl::KernelArg::ReadOnlyNoSize(src), ocl::KernelArg::WriteOnly(dst), ocl::KernelArg::ReadOnlyNoSize(c));
return k.run(2, globalsize, 0, false);
}
case COLOR_XYZ2BGR: case COLOR_XYZ2RGB:
{
if (dcn <= 0)
dcn = 3;
CV_Assert(scn == 3 && (dcn == 3 || dcn == 4));
bidx = code == COLOR_XYZ2BGR ? 0 : 2;
UMat c;
if (depth == CV_32F)
{
float coeffs[] =
{
3.240479f, -1.53715f, -0.498535f,
-0.969256f, 1.875991f, 0.041556f,
0.055648f, -0.204043f, 1.057311f
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[6]);
std::swap(coeffs[1], coeffs[7]);
std::swap(coeffs[2], coeffs[8]);
}
Mat(1, 9, CV_32FC1, &coeffs[0]).copyTo(c);
}
else
{
int coeffs[] =
{
13273, -6296, -2042,
-3970, 7684, 170,
228, -836, 4331
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[6]);
std::swap(coeffs[1], coeffs[7]);
std::swap(coeffs[2], coeffs[8]);
}
Mat(1, 9, CV_32SC1, &coeffs[0]).copyTo(c);
}
_dst.create(dstSz, CV_MAKETYPE(depth, dcn));
dst = _dst.getUMat();
k.create("XYZ2RGB", ocl::imgproc::cvtcolor_oclsrc,
format("-D depth=%d -D scn=3 -D dcn=%d -D bidx=%d", depth, dcn, bidx));
k.args(ocl::KernelArg::ReadOnlyNoSize(src), ocl::KernelArg::WriteOnly(dst), ocl::KernelArg::ReadOnlyNoSize(c));
return k.run(2, globalsize, 0, false);
}
/* /*
case COLOR_BGR5652GRAY: case COLOR_BGR5552GRAY: case COLOR_BGR5652GRAY: case COLOR_BGR5552GRAY:
case COLOR_GRAY2BGR565: case COLOR_GRAY2BGR555: case COLOR_GRAY2BGR565: case COLOR_GRAY2BGR555:

49
modules/imgproc/src/opencl/cvtcolor.cl
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@ -54,18 +54,21 @@
#define DATA_TYPE uchar #define DATA_TYPE uchar
#define MAX_NUM 255 #define MAX_NUM 255
#define HALF_MAX 128 #define HALF_MAX 128
#define COEFF_TYPE int
#define SAT_CAST(num) convert_uchar_sat(num) #define SAT_CAST(num) convert_uchar_sat(num)
#define DEPTH_0 #define DEPTH_0
#elif depth == 2 #elif depth == 2
#define DATA_TYPE ushort #define DATA_TYPE ushort
#define MAX_NUM 65535 #define MAX_NUM 65535
#define HALF_MAX 32768 #define HALF_MAX 32768
#define COEFF_TYPE int
#define SAT_CAST(num) convert_ushort_sat(num) #define SAT_CAST(num) convert_ushort_sat(num)
#define DEPTH_2 #define DEPTH_2
#elif depth == 5 #elif depth == 5
#define DATA_TYPE float #define DATA_TYPE float
#define MAX_NUM 1.0f #define MAX_NUM 1.0f
#define HALF_MAX 0.5f #define HALF_MAX 0.5f
#define COEFF_TYPE float
#define SAT_CAST(num) (num) #define SAT_CAST(num) (num)
#define DEPTH_5 #define DEPTH_5
#else #else
@ -347,20 +350,22 @@ __kernel void YCrCb2RGB(__global const uchar* src, int src_step, int src_offset,
///////////////////////////////////// RGB <-> XYZ ////////////////////////////////////// ///////////////////////////////////// RGB <-> XYZ //////////////////////////////////////
__kernel void RGB2XYZ(int cols, int rows, int src_step, int dst_step, __kernel void RGB2XYZ(__global const uchar * srcptr, int src_step, int src_offset,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst, __global uchar * dstptr, int dst_step, int dst_offset,
int src_offset, int dst_offset, __constant COEFF_TYPE * coeffs) int rows, int cols, __constant COEFF_TYPE * coeffs, int a1, int a2)
{ {
int dx = get_global_id(0); int dx = get_global_id(0);
int dy = get_global_id(1); int dy = get_global_id(1);
if (dy < rows && dx < cols) if (dy < rows && dx < cols)
{ {
dx <<= 2; int src_idx = mad24(dy, src_step, src_offset + dx * scnbytes);
int src_idx = mad24(dy, src_step, src_offset + dx); int dst_idx = mad24(dy, dst_step, dst_offset + dx * dcnbytes);
int dst_idx = mad24(dy, dst_step, dst_offset + dx);
DATA_TYPE r = src[src_idx], g = src[src_idx + 1], b = src[src_idx + 2]; __global const DATA_TYPE * src = (__global const DATA_TYPE *)(srcptr + src_idx);
__global DATA_TYPE * dst = (__global DATA_TYPE *)(dstptr + dst_idx);
DATA_TYPE r = src[0], g = src[1], b = src[2];
#ifdef DEPTH_5 #ifdef DEPTH_5
float x = r * coeffs[0] + g * coeffs[1] + b * coeffs[2]; float x = r * coeffs[0] + g * coeffs[1] + b * coeffs[2];
@ -371,26 +376,28 @@ __kernel void RGB2XYZ(int cols, int rows, int src_step, int dst_step,
int y = CV_DESCALE(r * coeffs[3] + g * coeffs[4] + b * coeffs[5], xyz_shift); int y = CV_DESCALE(r * coeffs[3] + g * coeffs[4] + b * coeffs[5], xyz_shift);
int z = CV_DESCALE(r * coeffs[6] + g * coeffs[7] + b * coeffs[8], xyz_shift); int z = CV_DESCALE(r * coeffs[6] + g * coeffs[7] + b * coeffs[8], xyz_shift);
#endif #endif
dst[dst_idx] = SAT_CAST(x); dst[0] = SAT_CAST(x);
dst[dst_idx + 1] = SAT_CAST(y); dst[1] = SAT_CAST(y);
dst[dst_idx + 2] = SAT_CAST(z); dst[2] = SAT_CAST(z);
} }
} }
__kernel void XYZ2RGB(int cols, int rows, int src_step, int dst_step, __kernel void XYZ2RGB(__global const uchar * srcptr, int src_step, int src_offset,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst, __global uchar * dstptr, int dst_step, int dst_offset,
int src_offset, int dst_offset, __constant COEFF_TYPE * coeffs) int rows, int cols, __constant COEFF_TYPE * coeffs, int a1, int a2)
{ {
int dx = get_global_id(0); int dx = get_global_id(0);
int dy = get_global_id(1); int dy = get_global_id(1);
if (dy < rows && dx < cols) if (dy < rows && dx < cols)
{ {
dx <<= 2; int src_idx = mad24(dy, src_step, src_offset + dx * scnbytes);
int src_idx = mad24(dy, src_step, src_offset + dx); int dst_idx = mad24(dy, dst_step, dst_offset + dx * dcnbytes);
int dst_idx = mad24(dy, dst_step, dst_offset + dx);
DATA_TYPE x = src[src_idx], y = src[src_idx + 1], z = src[src_idx + 2]; __global const DATA_TYPE * src = (__global const DATA_TYPE *)(srcptr + src_idx);
__global DATA_TYPE * dst = (__global DATA_TYPE *)(dstptr + dst_idx);
DATA_TYPE x = src[0], y = src[1], z = src[2];
#ifdef DEPTH_5 #ifdef DEPTH_5
float b = x * coeffs[0] + y * coeffs[1] + z * coeffs[2]; float b = x * coeffs[0] + y * coeffs[1] + z * coeffs[2];
@ -401,11 +408,11 @@ __kernel void XYZ2RGB(int cols, int rows, int src_step, int dst_step,
int g = CV_DESCALE(x * coeffs[3] + y * coeffs[4] + z * coeffs[5], xyz_shift); int g = CV_DESCALE(x * coeffs[3] + y * coeffs[4] + z * coeffs[5], xyz_shift);
int r = CV_DESCALE(x * coeffs[6] + y * coeffs[7] + z * coeffs[8], xyz_shift); int r = CV_DESCALE(x * coeffs[6] + y * coeffs[7] + z * coeffs[8], xyz_shift);
#endif #endif
dst[dst_idx] = SAT_CAST(b); dst[0] = SAT_CAST(b);
dst[dst_idx + 1] = SAT_CAST(g); dst[1] = SAT_CAST(g);
dst[dst_idx + 2] = SAT_CAST(r); dst[2] = SAT_CAST(r);
#if dcn == 4 #if dcn == 4
dst[dst_idx + 3] = MAX_NUM; dst[3] = MAX_NUM;
#endif #endif
} }
} }

16
modules/imgproc/test/ocl/test_color.cpp
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@ -157,15 +157,15 @@ OCL_TEST_P(CvtColor, YCrCb2BGRA) { performTest(3, 4, CVTCODE(YCrCb2BGR)); }
// RGB <-> XYZ // RGB <-> XYZ
//OCL_TEST_P(CvtColor, RGB2XYZ) { performTest(3, 3, CVTCODE(RGB2XYZ)); } OCL_TEST_P(CvtColor, RGB2XYZ) { performTest(3, 3, CVTCODE(RGB2XYZ)); }
//OCL_TEST_P(CvtColor, BGR2XYZ) { performTest(3, 3, CVTCODE(BGR2XYZ)); } OCL_TEST_P(CvtColor, BGR2XYZ) { performTest(3, 3, CVTCODE(BGR2XYZ)); }
//OCL_TEST_P(CvtColor, RGBA2XYZ) { performTest(4, 3, CVTCODE(RGB2XYZ)); } OCL_TEST_P(CvtColor, RGBA2XYZ) { performTest(4, 3, CVTCODE(RGB2XYZ)); }
//OCL_TEST_P(CvtColor, BGRA2XYZ) { performTest(4, 3, CVTCODE(BGR2XYZ)); } OCL_TEST_P(CvtColor, BGRA2XYZ) { performTest(4, 3, CVTCODE(BGR2XYZ)); }
//OCL_TEST_P(CvtColor, XYZ2RGB) { performTest(3, 3, CVTCODE(XYZ2RGB)); } OCL_TEST_P(CvtColor, XYZ2RGB) { performTest(3, 3, CVTCODE(XYZ2RGB)); }
//OCL_TEST_P(CvtColor, XYZ2BGR) { performTest(3, 3, CVTCODE(XYZ2BGR)); } OCL_TEST_P(CvtColor, XYZ2BGR) { performTest(3, 3, CVTCODE(XYZ2BGR)); }
//OCL_TEST_P(CvtColor, XYZ2RGBA) { performTest(3, 4, CVTCODE(XYZ2RGB)); } OCL_TEST_P(CvtColor, XYZ2RGBA) { performTest(3, 4, CVTCODE(XYZ2RGB)); }
//OCL_TEST_P(CvtColor, XYZ2BGRA) { performTest(3, 4, CVTCODE(XYZ2BGR)); } OCL_TEST_P(CvtColor, XYZ2BGRA) { performTest(3, 4, CVTCODE(XYZ2BGR)); }
// RGB <-> HSV // RGB <-> HSV

65
modules/ocl/src/opencl/cvt_color.cl
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@ -91,71 +91,6 @@ enum
BLOCK_SIZE = 256 BLOCK_SIZE = 256
}; };
///////////////////////////////////// RGB <-> XYZ //////////////////////////////////////
__kernel void RGB2XYZ(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset, __constant COEFF_TYPE * coeffs)
{
int dx = get_global_id(0);
int dy = get_global_id(1);
if (dy < rows && dx < cols)
{
dx <<= 2;
int src_idx = mad24(dy, src_step, src_offset + dx);
int dst_idx = mad24(dy, dst_step, dst_offset + dx);
DATA_TYPE r = src[src_idx], g = src[src_idx + 1], b = src[src_idx + 2];
#ifdef DEPTH_5
float x = r * coeffs[0] + g * coeffs[1] + b * coeffs[2];
float y = r * coeffs[3] + g * coeffs[4] + b * coeffs[5];
float z = r * coeffs[6] + g * coeffs[7] + b * coeffs[8];
#else
int x = CV_DESCALE(r * coeffs[0] + g * coeffs[1] + b * coeffs[2], xyz_shift);
int y = CV_DESCALE(r * coeffs[3] + g * coeffs[4] + b * coeffs[5], xyz_shift);
int z = CV_DESCALE(r * coeffs[6] + g * coeffs[7] + b * coeffs[8], xyz_shift);
#endif
dst[dst_idx] = SAT_CAST(x);
dst[dst_idx + 1] = SAT_CAST(y);
dst[dst_idx + 2] = SAT_CAST(z);
}
}
__kernel void XYZ2RGB(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset, __constant COEFF_TYPE * coeffs)
{
int dx = get_global_id(0);
int dy = get_global_id(1);
if (dy < rows && dx < cols)
{
dx <<= 2;
int src_idx = mad24(dy, src_step, src_offset + dx);
int dst_idx = mad24(dy, dst_step, dst_offset + dx);
DATA_TYPE x = src[src_idx], y = src[src_idx + 1], z = src[src_idx + 2];
#ifdef DEPTH_5
float b = x * coeffs[0] + y * coeffs[1] + z * coeffs[2];
float g = x * coeffs[3] + y * coeffs[4] + z * coeffs[5];
float r = x * coeffs[6] + y * coeffs[7] + z * coeffs[8];
#else
int b = CV_DESCALE(x * coeffs[0] + y * coeffs[1] + z * coeffs[2], xyz_shift);
int g = CV_DESCALE(x * coeffs[3] + y * coeffs[4] + z * coeffs[5], xyz_shift);
int r = CV_DESCALE(x * coeffs[6] + y * coeffs[7] + z * coeffs[8], xyz_shift);
#endif
dst[dst_idx] = SAT_CAST(b);
dst[dst_idx + 1] = SAT_CAST(g);
dst[dst_idx + 2] = SAT_CAST(r);
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
///////////////////////////////////// RGB[A] <-> BGR[A] ////////////////////////////////////// ///////////////////////////////////// RGB[A] <-> BGR[A] //////////////////////////////////////
__kernel void RGB(int cols, int rows, int src_step, int dst_step, __kernel void RGB(int cols, int rows, int src_step, int dst_step,