mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2025-06-11 11:45:30 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

ocl_calcHist1: Use proper local size for merge_histogram kernel

Browse Source 
merge_histogram kernel only need "BINS" theads to accumulate the
histgrams, it is not efficient to directly use maxGroupSize as
local size if maxGroupSize is far greater then BINS.
This commit is contained in:
wzw 2017-07-05 21:24:09 +08:00
parent f670a99270
commit 635342ab73
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
modules/imgproc/src/histogram.cpp
View File

@ -1723,6 +1723,7 @@ static bool ocl_calcHist1(InputArray _src, OutputArray _hist, int ddepth = CV_32
if (!k1.run(1, &globalsize, &wgs, false))
return false;
wgs = std::min<size_t>(ocl::Device::getDefault().maxWorkGroupSize(), BINS);
char cvt[40];
ocl::Kernel k2("merge_histogram", ocl::imgproc::histogram_oclsrc,
format("-D BINS=%d -D HISTS_COUNT=%d -D WGS=%d -D convertToHT=%s -D HT=%s",