本文整理汇总了C++中OutputArray::channels方法的典型用法代码示例。如果您正苦于以下问题：C++ OutputArray::channels方法的具体用法？C++ OutputArray::channels怎么用？C++ OutputArray::channels使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类OutputArray的用法示例。
在下文中一共展示了OutputArray::channels方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ipp_Deriv
static bool ipp_Deriv(InputArray _src, OutputArray _dst, int dx, int dy, int ksize, double scale, double delta, int borderType)
{
#ifdef HAVE_IPP_IW
CV_INSTRUMENT_REGION_IPP()
::ipp::IwiSize size(_src.size().width, _src.size().height);
IppDataType srcType = ippiGetDataType(_src.depth());
IppDataType dstType = ippiGetDataType(_dst.depth());
int channels = _src.channels();
bool useScale = false;
bool useScharr = false;
if(channels != _dst.channels() || channels > 1)
return false;
if(fabs(delta) > FLT_EPSILON || fabs(scale-1) > FLT_EPSILON)
useScale = true;
if(ksize <= 0)
{
ksize = 3;
useScharr = true;
}
IppiMaskSize maskSize = ippiGetMaskSize(ksize, ksize);
if((int)maskSize < 0)
return false;
#if IPP_VERSION_X100 <= 201703
// Bug with mirror wrap
if(borderType == BORDER_REFLECT_101 && (ksize/2+1 > size.width || ksize/2+1 > size.height))
return false;
#endif
IwiDerivativeType derivType = ippiGetDerivType(dx, dy, (useScharr)?false:true);
if((int)derivType < 0)
return false;
// Acquire data and begin processing
try
{
Mat src = _src.getMat();
Mat dst = _dst.getMat();
::ipp::IwiImage iwSrc = ippiGetImage(src);
::ipp::IwiImage iwDst = ippiGetImage(dst);
::ipp::IwiImage iwSrcProc = iwSrc;
::ipp::IwiImage iwDstProc = iwDst;
::ipp::IwiBorderSize borderSize(maskSize);
::ipp::IwiBorderType ippBorder(ippiGetBorder(iwSrc, borderType, borderSize));
if(!ippBorder)
return false;
if(srcType == ipp8u && dstType == ipp8u)
{
iwDstProc.Alloc(iwDst.m_size, ipp16s, channels);
useScale = true;
}
else if(srcType == ipp8u && dstType == ipp32f)
{
iwSrc -= borderSize;
iwSrcProc.Alloc(iwSrc.m_size, ipp32f, channels);
CV_INSTRUMENT_FUN_IPP(::ipp::iwiScale, iwSrc, iwSrcProc, 1, 0, ::ipp::IwiScaleParams(ippAlgHintFast));
iwSrcProc += borderSize;
}
if(useScharr)
CV_INSTRUMENT_FUN_IPP(::ipp::iwiFilterScharr, iwSrcProc, iwDstProc, derivType, maskSize, ::ipp::IwDefault(), ippBorder);
else
CV_INSTRUMENT_FUN_IPP(::ipp::iwiFilterSobel, iwSrcProc, iwDstProc, derivType, maskSize, ::ipp::IwDefault(), ippBorder);
if(useScale)
CV_INSTRUMENT_FUN_IPP(::ipp::iwiScale, iwDstProc, iwDst, scale, delta, ::ipp::IwiScaleParams(ippAlgHintFast));
}
catch (::ipp::IwException)
{
return false;
}
return true;
#else
CV_UNUSED(_src); CV_UNUSED(_dst); CV_UNUSED(dx); CV_UNUSED(dy); CV_UNUSED(ksize); CV_UNUSED(scale); CV_UNUSED(delta); CV_UNUSED(borderType);
return false;
#endif
}