generic-library/opencv
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eliminated convertTo

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This commit is contained in:
Ilya Lavrenov 2014-06-09 19:45:37 +04:00
parent c072c28e28
commit eeaa4b3665
2 changed files with 21 additions and 14 deletions
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19
modules/imgproc/src/histogram.cpp
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@ -1494,7 +1494,7 @@ static bool ocl_calcHist1(InputArray _src, OutputArray _hist, int ddepth = CV_32
_hist.create(BINS, 1, ddepth);
UMat src = _src.getUMat(), ghist(1, BINS * compunits, CV_32SC1),
hist = ddepth == CV_32S ? _hist.getUMat() : UMat(BINS, 1, CV_32SC1);
hist = _hist.getUMat();
k1.args(ocl::KernelArg::ReadOnly(src),
ocl::KernelArg::PtrWriteOnly(ghist), (int)src.total());
@ -1503,23 +1503,18 @@ static bool ocl_calcHist1(InputArray _src, OutputArray _hist, int ddepth = CV_32
if (!k1.run(1, &globalsize, &wgs, false))
return false;
char cvt[40];
ocl::Kernel k2("merge_histogram", ocl::imgproc::histogram_oclsrc,
format("-D BINS=%d -D HISTS_COUNT=%d -D WGS=%d",
BINS, compunits, (int)wgs));
format("-D BINS=%d -D HISTS_COUNT=%d -D WGS=%d -D convertToHT=%s -D HT=%s",
BINS, compunits, (int)wgs, ocl::convertTypeStr(CV_32S, ddepth, 1, cvt),
ocl::typeToStr(ddepth)));
if (k2.empty())
return false;
k2.args(ocl::KernelArg::PtrReadOnly(ghist),
ocl::KernelArg::PtrWriteOnly(hist));
if (!k2.run(1, &wgs, &wgs, false))
return false;
ocl::KernelArg::WriteOnlyNoSize(hist));
if (hist.depth() != ddepth)
hist.convertTo(_hist, ddepth);
else
_hist.getUMatRef() = hist;
return true;
return k2.run(1, &wgs, &wgs, false);
}
static bool ocl_calcHist(InputArrayOfArrays images, OutputArray hist)

16
modules/imgproc/src/opencl/histogram.cl
View File

@ -45,6 +45,8 @@
#define T uchar
#endif
#define noconvert
__kernel void calculate_histogram(__global const uchar * src, int src_step, int src_offset, int src_rows, int src_cols,
__global uchar * histptr, int total)
{
@ -111,10 +113,20 @@ __kernel void calculate_histogram(__global const uchar * src, int src_step, int
hist[i] = localhist[i];
}
__kernel void merge_histogram(__global const int * ghist, __global int * hist)
#ifndef HT
#define HT int
#endif
#ifndef convertToHT
#define convertToHT noconvert
#endif
__kernel void merge_histogram(__global const int * ghist, __global uchar * histptr, int hist_step, int hist_offset)
{
int lid = get_local_id(0);
__global HT * hist = (__global HT *)(histptr + hist_offset);
#pragma unroll
for (int i = lid; i < BINS; i += WGS)
hist[i] = ghist[i];
@ -126,7 +138,7 @@ __kernel void merge_histogram(__global const int * ghist, __global int * hist)
ghist += BINS;
#pragma unroll
for (int j = lid; j < BINS; j += WGS)
hist[j] += ghist[j];
hist[j] += convertToHT(ghist[j]);
barrier(CLK_LOCAL_MEM_FENCE);
}
}