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added RGB[A] -> HLS[FULL] conversion

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This commit is contained in:
Ilya Lavrenov
2013-11-13 17:41:40 +04:00
parent af7c614438
commit 3bdd9626f3
3 changed files with 97 additions and 16 deletions
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4
modules/ocl/src/color.cpp
View File

@@ -440,11 +440,11 @@ static void cvtColor_caller(const oclMat &src, oclMat &dst, int code, int dcn)
initialized = true;
}
fromRGB_caller(src, dst, bidx, kernelName, format(" -D hrange=%d", hrange), sdiv_data, hrange == 256 ? hdiv_data256 : hdiv_data180);
fromRGB_caller(src, dst, bidx, kernelName, format(" -D hrange=%d -D hscale=0", hrange), sdiv_data, hrange == 256 ? hdiv_data256 : hdiv_data180);
return;
}
fromRGB_caller(src, dst, bidx, kernelName, format(" -D hscale=%f", hrange*(1.f/360.f)));
fromRGB_caller(src, dst, bidx, kernelName, format(" -D hscale=%f -D hrange=0", hrange*(1.f/360.f)));
break;
}
/*

91
modules/ocl/src/opencl/cvt_color.cl
View File

@@ -636,35 +636,104 @@ __kernel void RGB2HSV(int cols, int rows, int src_step, int dst_step, int bidx,
#endif
///////////////////////////////////// RGB <-> HLS //////////////////////////////////////
#ifdef DEPTH_0
__kernel void RGB2HLS(int cols, int rows, int src_step, int dst_step, int bidx,
__global const uchar * src, __global uchar * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
float b = src[src_idx + bidx]*(1/255.f), g = src[src_idx + 1]*(1/255.f), r = src[src_idx + (bidx^2)]*(1/255.f);
float h = 0.f, s = 0.f, l;
float vmin, vmax, diff;
vmax = vmin = r;
if (vmax < g) vmax = g;
if (vmax < b) vmax = b;
if (vmin > g) vmin = g;
if (vmin > b) vmin = b;
diff = vmax - vmin;
l = (vmax + vmin)*0.5f;
if (diff > FLT_EPSILON)
{
s = l < 0.5f ? diff/(vmax + vmin) : diff/(2 - vmax - vmin);
diff = 60.f/diff;
if( vmax == r )
h = (g - b)*diff;
else if( vmax == g )
h = (b - r)*diff + 120.f;
else
h = (r - g)*diff + 240.f;
if( h < 0.f ) h += 360.f;
}
dst[dst_idx] = convert_uchar_sat_rte(h*hscale);
dst[dst_idx + 1] = convert_uchar_sat_rte(l*255.f);
dst[dst_idx + 2] = convert_uchar_sat_rte(s*255.f);
}
}
#elif defined DEPTH_5
__kernel void RGB2HLS(int cols, int rows, int src_step, int dst_step, int bidx,
__global const float * src, __global float * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
float b = src[src_idx + bidx], g = src[src_idx + 1], r = src[src_idx + (bidx^2)];
float h = 0.f, s = 0.f, l;
float vmin, vmax, diff;
vmax = vmin = r;
if (vmax < g) vmax = g;
if (vmax < b) vmax = b;
if (vmin > g) vmin = g;
if (vmin > b) vmin = b;
diff = vmax - vmin;
l = (vmax + vmin)*0.5f;
if (diff > FLT_EPSILON)
{
s = l < 0.5f ? diff/(vmax + vmin) : diff/(2 - vmax - vmin);
diff = 60.f/diff;
if( vmax == r )
h = (g - b)*diff;
else if( vmax == g )
h = (b - r)*diff + 120.f;
else
h = (r - g)*diff + 240.f;
if( h < 0.f ) h += 360.f;
}
dst[dst_idx] = h*hscale;
dst[dst_idx + 1] = l;
dst[dst_idx + 2] = s;
}
}
#endif