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improved performance of moments (on 720p or larger images)

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This commit is contained in:
Vadim Pisarevsky
2013-12-26 23:29:04 +04:00
parent e97dd57dc7
commit 48c7378c8f
2 changed files with 93 additions and 40 deletions
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modules/imgproc/src/moments.cpp
+3 -3
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@@ -365,7 +365,7 @@ Moments::Moments( double _m00, double _m10, double _m01, double _m20, double _m1
static bool ocl_moments( InputArray _src, Moments& m)
{
const int TILE_SIZE = 16;
const int TILE_SIZE = 32;
const int K = 10;
ocl::Kernel k("moments", ocl::imgproc::moments_oclsrc, format("-D TILE_SIZE=%d", TILE_SIZE));
if( k.empty() )
@@ -378,10 +378,10 @@ static bool ocl_moments( InputArray _src, Moments& m)
int ntiles = xtiles*ytiles;
UMat umbuf(1, ntiles*K, CV_32S);
size_t globalsize[] = {xtiles, ytiles};
size_t globalsize[] = {xtiles, sz.height}, localsize[] = {1, TILE_SIZE};
bool ok = k.args(ocl::KernelArg::ReadOnly(src),
ocl::KernelArg::PtrWriteOnly(umbuf),
xtiles).run(2, globalsize, 0, true);
xtiles).run(2, globalsize, localsize, true);
if(!ok)
return false;
Mat mbuf = umbuf.getMat(ACCESS_READ);