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Merge pull request #7478 from terfendail:ovx_boxfilter

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Vadim Pisarevsky 2016-12-01 17:57:46 +00:00
commit c99097f89a
1 changed files with 110 additions and 0 deletions
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110
modules/imgproc/src/smooth.cpp
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@ -1639,6 +1639,111 @@ cv::Ptr<cv::FilterEngine> cv::createBoxFilter( int srcType, int dstType, Size ks
srcType, dstType, sumType, borderType );
}
#ifdef HAVE_OPENVX
namespace cv
{
static bool openvx_boxfilter(InputArray _src, OutputArray _dst, int ddepth,
Size ksize, Point anchor,
bool normalize, int borderType)
{
int stype = _src.type();
if (ddepth < 0)
ddepth = CV_8UC1;
if (stype != CV_8UC1 || (ddepth != CV_8U && ddepth != CV_16S) ||
(anchor.x >= 0 && anchor.x != ksize.width / 2) ||
(anchor.y >= 0 && anchor.y != ksize.height / 2) ||
ksize.width % 2 != 1 || ksize.height % 2 != 1 ||
ksize.width < 3 || ksize.height < 3)
return false;
Mat src = _src.getMat();
_dst.create(src.size(), CV_MAKETYPE(ddepth, 1));
Mat dst = _dst.getMat();
if (src.cols < ksize.width || src.rows < ksize.height)
return false;
if ((borderType & BORDER_ISOLATED) == 0 && src.isSubmatrix())
return false; //Process isolated borders only
vx_border_t border;
switch (borderType & ~BORDER_ISOLATED)
{
case BORDER_CONSTANT:
border.mode = VX_BORDER_CONSTANT;
#if VX_VERSION > VX_VERSION_1_0
border.constant_value.U8 = (vx_uint8)(0);
#else
border.constant_value = (vx_uint32)(0);
#endif
break;
case BORDER_REPLICATE:
border.mode = VX_BORDER_REPLICATE;
break;
default:
return false;
}
try
{
ivx::Context ctx = ivx::Context::create();
if ((vx_size)(ksize.width) > ctx.convolutionMaxDimension() || (vx_size)(ksize.height) > ctx.convolutionMaxDimension())
return false;
Mat a;
if (dst.data != src.data)
a = src;
else
src.copyTo(a);
ivx::Image
ia = ivx::Image::createFromHandle(ctx, VX_DF_IMAGE_U8,
ivx::Image::createAddressing(a.cols, a.rows, 1, (vx_int32)(a.step)), a.data),
ib = ivx::Image::createFromHandle(ctx, ddepth == CV_16S ? VX_DF_IMAGE_S16 : VX_DF_IMAGE_U8,
ivx::Image::createAddressing(dst.cols, dst.rows, ddepth == CV_16S ? 2 : 1, (vx_int32)(dst.step)), dst.data);
//ATTENTION: VX_CONTEXT_IMMEDIATE_BORDER attribute change could lead to strange issues in multi-threaded environments
//since OpenVX standart says nothing about thread-safety for now
vx_border_t prevBorder = ctx.borderMode();
ctx.setBorderMode(border);
if (ddepth == CV_8U && ksize.width == 3 && ksize.height == 3 && normalize)
{
ivx::IVX_CHECK_STATUS(vxuBox3x3(ctx, ia, ib));
}
else
{
#if VX_VERSION <= VX_VERSION_1_0
if (ctx.vendorID() == VX_ID_KHRONOS && ((vx_size)(src.cols) <= ctx.convolutionMaxDimension() || (vx_size)(src.rows) <= ctx.convolutionMaxDimension()))
{
ctx.setBorderMode(prevBorder);
return false;
}
#endif
Mat convData(ksize, CV_16SC1);
convData = normalize ? (1 << 15) / (ksize.width * ksize.height) : 1;
ivx::Convolution cnv = ivx::Convolution::create(ctx, convData.cols, convData.rows);
cnv.copyFrom(convData);
if (normalize)
cnv.setScale(1 << 15);
ivx::IVX_CHECK_STATUS(vxuConvolve(ctx, ia, cnv, ib));
}
ctx.setBorderMode(prevBorder);
}
catch (ivx::RuntimeError & e)
{
CV_Error(CV_StsInternal, e.what());
return false;
}
catch (ivx::WrapperError & e)
{
CV_Error(CV_StsInternal, e.what());
return false;
}
return true;
}
}
#endif
// TODO: IPP performance regression
#if defined(HAVE_IPP) && IPP_DISABLE_BLOCK
namespace cv
@ -1750,6 +1855,11 @@ void cv::boxFilter( InputArray _src, OutputArray _dst, int ddepth,
CV_OCL_RUN(_dst.isUMat(), ocl_boxFilter(_src, _dst, ddepth, ksize, anchor, borderType, normalize))
#ifdef HAVE_OPENVX
if (openvx_boxfilter(_src, _dst, ddepth, ksize, anchor, normalize, borderType))
return;
#endif
Mat src = _src.getMat();
int stype = src.type(), sdepth = CV_MAT_DEPTH(stype), cn = CV_MAT_CN(stype);
if( ddepth < 0 )