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Merge pull request #2621 from arkunze:pullreq/140319-resize-b

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This commit is contained in:
Andrey Pavlenko 2014-04-15 19:56:55 +04:00 committed by OpenCV Buildbot
commit 80ef1f6753
7 changed files with 294 additions and 70 deletions
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19
modules/core/include/opencv2/core/ocl.hpp
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@ -151,6 +151,10 @@ public:
bool imageSupport() const;
bool imageFromBufferSupport() const;
uint imagePitchAlignment() const;
uint imageBaseAddressAlignment() const;
size_t image2DMaxWidth() const;
size_t image2DMaxHeight() const;
@ -604,12 +608,25 @@ class CV_EXPORTS Image2D
{
public:
Image2D();
explicit Image2D(const UMat &src);
// src: The UMat from which to get image properties and data
// norm: Flag to enable the use of normalized channel data types
// alias: Flag indicating that the image should alias the src UMat.
// If true, changes to the image or src will be reflected in
// both objects.
explicit Image2D(const UMat &src, bool norm = false, bool alias = false);
Image2D(const Image2D & i);
~Image2D();
Image2D & operator = (const Image2D & i);
// Indicates if creating an aliased image should succeed. Depends on the
// underlying platform and the dimensions of the UMat.
static bool canCreateAlias(const UMat &u);
// Indicates if the image format is supported.
static bool isFormatSupported(int depth, int cn, bool norm);
void* ptr() const;
protected:
struct Impl;

144
modules/core/src/ocl.cpp
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@ -882,7 +882,6 @@ OCL_FUNC_P(cl_mem, clCreateImage2D,
cl_int *errcode_ret),
(context, flags, image_format, image_width, image_height, image_row_pitch, host_ptr, errcode_ret))
/*
OCL_FUNC(cl_int, clGetSupportedImageFormats,
(cl_context context,
cl_mem_flags flags,
@ -892,6 +891,7 @@ OCL_FUNC(cl_int, clGetSupportedImageFormats,
cl_uint * num_image_formats),
(context, flags, image_type, num_entries, image_formats, num_image_formats))
/*
OCL_FUNC(cl_int, clGetMemObjectInfo,
(cl_mem memobj,
cl_mem_info param_name,
@ -1912,6 +1912,38 @@ bool Device::hostUnifiedMemory() const
bool Device::imageSupport() const
{ return p ? p->getBoolProp(CL_DEVICE_IMAGE_SUPPORT) : false; }
bool Device::imageFromBufferSupport() const
{
bool ret = false;
if (p)
{
size_t pos = p->getStrProp(CL_DEVICE_EXTENSIONS).find("cl_khr_image2d_from_buffer");
if (pos != String::npos)
{
ret = true;
}
}
return ret;
}
uint Device::imagePitchAlignment() const
{
#ifdef CL_DEVICE_IMAGE_PITCH_ALIGNMENT
return p ? p->getProp<cl_uint, uint>(CL_DEVICE_IMAGE_PITCH_ALIGNMENT) : 0;
#else
return 0;
#endif
}
uint Device::imageBaseAddressAlignment() const
{
#ifdef CL_DEVICE_IMAGE_BASE_ADDRESS_ALIGNMENT
return p ? p->getProp<cl_uint, uint>(CL_DEVICE_IMAGE_BASE_ADDRESS_ALIGNMENT) : 0;
#else
return 0;
#endif
}
size_t Device::image2DMaxWidth() const
{ return p ? p->getProp<size_t, size_t>(CL_DEVICE_IMAGE2D_MAX_WIDTH) : 0; }
@ -2705,9 +2737,15 @@ struct Kernel::Impl
haveTempDstUMats = true;
}
void addImage(const Image2D& image)
{
images.push_back(image);
}
void finit()
{
cleanupUMats();
images.clear();
if(e) { clReleaseEvent(e); e = 0; }
release();
}
@ -2725,6 +2763,7 @@ struct Kernel::Impl
enum { MAX_ARRS = 16 };
UMatData* u[MAX_ARRS];
int nu;
std::list<Image2D> images;
bool haveTempDstUMats;
};
@ -2838,6 +2877,7 @@ int Kernel::set(int i, const void* value, size_t sz)
int Kernel::set(int i, const Image2D& image2D)
{
p->addImage(image2D);
cl_mem h = (cl_mem)image2D.ptr();
return set(i, &h, sizeof(h));
}
@ -4434,11 +4474,11 @@ void buildOptionsAddMatrixDescription(String& buildOptions, const String& name,
struct Image2D::Impl
{
Impl(const UMat &src)
Impl(const UMat &src, bool norm, bool alias)
{
handle = 0;
refcount = 1;
init(src);
init(src, norm, alias);
}
~Impl()
@ -4447,25 +4487,56 @@ struct Image2D::Impl
clReleaseMemObject(handle);
}
void init(const UMat &src)
static cl_image_format getImageFormat(int depth, int cn, bool norm)
{
cl_image_format format;
static const int channelTypes[] = { CL_UNSIGNED_INT8, CL_SIGNED_INT8, CL_UNSIGNED_INT16,
CL_SIGNED_INT16, CL_SIGNED_INT32, CL_FLOAT, -1, -1 };
static const int channelTypesNorm[] = { CL_UNORM_INT8, CL_SNORM_INT8, CL_UNORM_INT16,
CL_SNORM_INT16, -1, -1, -1, -1 };
static const int channelOrders[] = { -1, CL_R, CL_RG, -1, CL_RGBA };
int channelType = norm ? channelTypesNorm[depth] : channelTypes[depth];
int channelOrder = channelOrders[cn];
format.image_channel_data_type = (cl_channel_type)channelType;
format.image_channel_order = (cl_channel_order)channelOrder;
return format;
}
static bool isFormatSupported(cl_image_format format)
{
cl_context context = (cl_context)Context::getDefault().ptr();
// Figure out how many formats are supported by this context.
cl_uint numFormats = 0;
cl_int err = clGetSupportedImageFormats(context, CL_MEM_READ_WRITE,
CL_MEM_OBJECT_IMAGE2D, numFormats,
NULL, &numFormats);
AutoBuffer<cl_image_format> formats(numFormats);
err = clGetSupportedImageFormats(context, CL_MEM_READ_WRITE,
CL_MEM_OBJECT_IMAGE2D, numFormats,
formats, NULL);
CV_OclDbgAssert(err == CL_SUCCESS);
for (cl_uint i = 0; i < numFormats; ++i)
{
if (!memcmp(&formats[i], &format, sizeof(format)))
{
return true;
}
}
return false;
}
void init(const UMat &src, bool norm, bool alias)
{
CV_Assert(ocl::Device::getDefault().imageSupport());
cl_image_format format;
int err, depth = src.depth(), cn = src.channels();
CV_Assert(cn <= 4);
cl_image_format format = getImageFormat(depth, cn, norm);
static const int channelTypes[] = { CL_UNSIGNED_INT8, CL_SIGNED_INT8, CL_UNSIGNED_INT16,
CL_SIGNED_INT16, CL_SIGNED_INT32, CL_FLOAT, -1, -1 };
static const int channelOrders[] = { -1, CL_R, CL_RG, -1, CL_RGBA };
int channelType = channelTypes[depth], channelOrder = channelOrders[cn];
if (channelType < 0 || channelOrder < 0)
if (!isFormatSupported(format))
CV_Error(Error::OpenCLApiCallError, "Image format is not supported");
format.image_channel_data_type = (cl_channel_type)channelType;
format.image_channel_order = (cl_channel_order)channelOrder;
cl_context context = (cl_context)Context::getDefault().ptr();
cl_command_queue queue = (cl_command_queue)Queue::getDefault().ptr();
@ -4474,6 +4545,7 @@ struct Image2D::Impl
// run on OpenCL 1.1 platform if library binaries are compiled with OpenCL 1.2 support
const Device & d = ocl::Device::getDefault();
int minor = d.deviceVersionMinor(), major = d.deviceVersionMajor();
CV_Assert(!alias || canCreateAlias(src));
if (1 < major || (1 == major && 2 <= minor))
{
cl_image_desc desc;
@ -4482,9 +4554,9 @@ struct Image2D::Impl
desc.image_height = src.rows;
desc.image_depth = 0;
desc.image_array_size = 1;
desc.image_row_pitch = 0;
desc.image_row_pitch = alias ? src.step[0] : 0;
desc.image_slice_pitch = 0;
desc.buffer = NULL;
desc.buffer = alias ? (cl_mem)src.handle(ACCESS_RW) : 0;
desc.num_mip_levels = 0;
desc.num_samples = 0;
handle = clCreateImage(context, CL_MEM_READ_WRITE, &format, &desc, NULL, &err);
@ -4493,6 +4565,7 @@ struct Image2D::Impl
#endif
{
CV_SUPPRESS_DEPRECATED_START
CV_Assert(!alias); // This is an OpenCL 1.2 extension
handle = clCreateImage2D(context, CL_MEM_READ_WRITE, &format, src.cols, src.rows, 0, NULL, &err);
CV_SUPPRESS_DEPRECATED_END
}
@ -4502,7 +4575,7 @@ struct Image2D::Impl
size_t region[] = { src.cols, src.rows, 1 };
cl_mem devData;
if (!src.isContinuous())
if (!alias && !src.isContinuous())
{
devData = clCreateBuffer(context, CL_MEM_READ_ONLY, src.cols * src.rows * src.elemSize(), NULL, &err);
CV_OclDbgAssert(err == CL_SUCCESS);
@ -4513,9 +4586,13 @@ struct Image2D::Impl
CV_OclDbgAssert(clFlush(queue) == CL_SUCCESS);
}
else
{
devData = (cl_mem)src.handle(ACCESS_READ);
}
CV_Assert(devData != NULL);
if (!alias)
{
CV_OclDbgAssert(clEnqueueCopyBufferToImage(queue, devData, handle, 0, origin, region, 0, NULL, 0) == CL_SUCCESS);
if (!src.isContinuous())
{
@ -4523,6 +4600,7 @@ struct Image2D::Impl
CV_OclDbgAssert(clReleaseMemObject(devData) == CL_SUCCESS);
}
}
}
IMPLEMENT_REFCOUNTABLE();
@ -4534,9 +4612,37 @@ Image2D::Image2D()
p = NULL;
}
Image2D::Image2D(const UMat &src)
Image2D::Image2D(const UMat &src, bool norm, bool alias)
{
p = new Impl(src);
p = new Impl(src, norm, alias);
}
bool Image2D::canCreateAlias(const UMat &m)
{
bool ret = false;
const Device & d = ocl::Device::getDefault();
if (d.imageFromBufferSupport())
{
// This is the required pitch alignment in pixels
uint pitchAlign = d.imagePitchAlignment();
if (pitchAlign && !(m.step % (pitchAlign * m.elemSize())))
{
// We don't currently handle the case where the buffer was created
// with CL_MEM_USE_HOST_PTR
if (!m.u->tempUMat())
{
ret = true;
}
}
}
return ret;
}
bool Image2D::isFormatSupported(int depth, int cn, bool norm)
{
cl_image_format format = Impl::getImageFormat(depth, cn, norm);
return Impl::isFormatSupported(format);
}
Image2D::Image2D(const Image2D & i)

56
modules/imgproc/src/imgwarp.cpp
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@ -2037,15 +2037,6 @@ static void ocl_computeResizeAreaTabs(int ssize, int dsize, double scale, int *
ofs_tab[dx] = k;
}
static void ocl_computeResizeAreaFastTabs(int * dmap_tab, int * smap_tab, int scale, int dcols, int scol)
{
for (int i = 0; i < dcols; ++i)
dmap_tab[i] = scale * i;
for (int i = 0, size = dcols * scale; i < size; ++i)
smap_tab[i] = std::min(scol - 1, i);
}
static bool ocl_resize( InputArray _src, OutputArray _dst, Size dsize,
double fx, double fy, int interpolation)
{
@ -2075,7 +2066,39 @@ static bool ocl_resize( InputArray _src, OutputArray _dst, Size dsize,
ocl::Kernel k;
size_t globalsize[] = { dst.cols, dst.rows };
if (interpolation == INTER_LINEAR)
ocl::Image2D srcImage;
// See if this could be done with a sampler. We stick with integer
// datatypes because the observed error is low.
bool useSampler = (interpolation == INTER_LINEAR && ocl::Device::getDefault().imageSupport() &&
ocl::Image2D::canCreateAlias(src) && depth <= 4 &&
ocl::Image2D::isFormatSupported(depth, cn, true));
if (useSampler)
{
int wdepth = std::max(depth, CV_32S);
char buf[2][32];
cv::String compileOpts = format("-D USE_SAMPLER -D depth=%d -D T=%s -D T1=%s "
"-D convertToDT=%s -D cn=%d",
depth, ocl::typeToStr(type), ocl::typeToStr(depth),
ocl::convertTypeStr(wdepth, depth, cn, buf[1]),
cn);
k.create("resizeSampler", ocl::imgproc::resize_oclsrc, compileOpts);
if(k.empty())
{
useSampler = false;
}
else
{
// Convert the input into an OpenCL image type, using normalized channel data types
// and aliasing the UMat.
srcImage = ocl::Image2D(src, true, true);
k.args(srcImage, ocl::KernelArg::WriteOnly(dst),
(float)inv_fx, (float)inv_fy);
}
}
if (interpolation == INTER_LINEAR && !useSampler)
{
char buf[2][32];
@ -2188,17 +2211,6 @@ static bool ocl_resize( InputArray _src, OutputArray _dst, Size dsize,
k.create("resizeAREA_FAST", ocl::imgproc::resize_oclsrc, buildOption);
if (k.empty())
return false;
int smap_tab_size = dst.cols * iscale_x + dst.rows * iscale_y;
AutoBuffer<int> dmap_tab(dst.cols + dst.rows), smap_tab(smap_tab_size);
int * dxmap_tab = dmap_tab, * dymap_tab = dxmap_tab + dst.cols;
int * sxmap_tab = smap_tab, * symap_tab = smap_tab + dst.cols * iscale_y;
ocl_computeResizeAreaFastTabs(dxmap_tab, sxmap_tab, iscale_x, dst.cols, src.cols);
ocl_computeResizeAreaFastTabs(dymap_tab, symap_tab, iscale_y, dst.rows, src.rows);
Mat(1, dst.cols + dst.rows, CV_32SC1, (void *)dmap_tab).copyTo(dmap);
Mat(1, smap_tab_size, CV_32SC1, (void *)smap_tab).copyTo(smap);
}
else
{
@ -2228,7 +2240,7 @@ static bool ocl_resize( InputArray _src, OutputArray _dst, Size dsize,
ocl::KernelArg srcarg = ocl::KernelArg::ReadOnly(src), dstarg = ocl::KernelArg::WriteOnly(dst);
if (is_area_fast)
k.args(srcarg, dstarg, ocl::KernelArg::PtrReadOnly(dmap), ocl::KernelArg::PtrReadOnly(smap));
k.args(srcarg, dstarg);
else
k.args(srcarg, dstarg, inv_fxf, inv_fyf, ocl::KernelArg::PtrReadOnly(tabofsOcl),
ocl::KernelArg::PtrReadOnly(mapOcl), ocl::KernelArg::PtrReadOnly(alphaOcl));

82
modules/imgproc/src/opencl/resize.cl
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@ -67,7 +67,64 @@
#define TSIZE (int)sizeof(T1)*cn
#endif
#ifdef INTER_LINEAR_INTEGER
#if defined USE_SAMPLER
#if cn == 1
#define READ_IMAGE(X,Y,Z) read_imagef(X,Y,Z).x
#elif cn == 2
#define READ_IMAGE(X,Y,Z) read_imagef(X,Y,Z).xy
#elif cn == 3
#define READ_IMAGE(X,Y,Z) read_imagef(X,Y,Z).xyz
#elif cn == 4
#define READ_IMAGE(X,Y,Z) read_imagef(X,Y,Z)
#endif
#define __CAT(x, y) x##y
#define CAT(x, y) __CAT(x, y)
#define INTERMEDIATE_TYPE CAT(float, cn)
#define float1 float
#if depth == 0
#define RESULT_SCALE 255.0f
#elif depth == 1
#define RESULT_SCALE 127.0f
#elif depth == 2
#define RESULT_SCALE 65535.0f
#elif depth == 3
#define RESULT_SCALE 32767.0f
#else
#define RESULT_SCALE 1.0f
#endif
__kernel void resizeSampler(__read_only image2d_t srcImage,
__global uchar* dstptr, int dststep, int dstoffset,
int dstrows, int dstcols,
float ifx, float ify)
{
const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE |
CLK_ADDRESS_CLAMP_TO_EDGE |
CLK_FILTER_LINEAR;
int dx = get_global_id(0);
int dy = get_global_id(1);
float sx = ((dx+0.5f) * ifx), sy = ((dy+0.5f) * ify);
INTERMEDIATE_TYPE intermediate = READ_IMAGE(srcImage, sampler, (float2)(sx, sy));
#if depth <= 4
T uval = convertToDT(round(intermediate * RESULT_SCALE));
#else
T uval = convertToDT(intermediate * RESULT_SCALE);
#endif
if(dx < dstcols && dy < dstrows)
{
storepix(uval, dstptr + mad24(dy, dststep, dstoffset + dx*TSIZE));
}
}
#elif defined INTER_LINEAR_INTEGER
__kernel void resizeLN(__global const uchar * srcptr, int src_step, int src_offset, int src_rows, int src_cols,
__global uchar * dstptr, int dst_step, int dst_offset, int dst_rows, int dst_cols,
@ -185,8 +242,7 @@ __kernel void resizeNN(__global const uchar * srcptr, int src_step, int src_offs
#ifdef INTER_AREA_FAST
__kernel void resizeAREA_FAST(__global const uchar * src, int src_step, int src_offset, int src_rows, int src_cols,
__global uchar * dst, int dst_step, int dst_offset, int dst_rows, int dst_cols,
__global const int * dmap_tab, __global const int * smap_tab)
__global uchar * dst, int dst_step, int dst_offset, int dst_rows, int dst_cols)
{
int dx = get_global_id(0);
int dy = get_global_id(1);
@ -195,21 +251,21 @@ __kernel void resizeAREA_FAST(__global const uchar * src, int src_step, int src_
{
int dst_index = mad24(dy, dst_step, dst_offset);
__global const int * xmap_tab = dmap_tab;
__global const int * ymap_tab = dmap_tab + dst_cols;
__global const int * sxmap_tab = smap_tab;
__global const int * symap_tab = smap_tab + XSCALE * dst_cols;
int sx = xmap_tab[dx], sy = ymap_tab[dy];
int sx = XSCALE * dx;
int sy = YSCALE * dy;
WTV sum = (WTV)(0);
#pragma unroll
for (int y = 0; y < YSCALE; ++y)
for (int py = 0; py < YSCALE; ++py)
{
int src_index = mad24(symap_tab[y + sy], src_step, src_offset);
int y = min(sy + py, src_rows - 1);
int src_index = mad24(y, src_step, src_offset);
#pragma unroll
for (int x = 0; x < XSCALE; ++x)
sum += convertToWTV(loadpix(src + mad24(sxmap_tab[sx + x], TSIZE, src_index)));
for (int px = 0; px < XSCALE; ++px)
{
int x = min(sx + px, src_cols - 1);
sum += convertToWTV(loadpix(src + src_index + x*TSIZE));
}
}
storepix(convertToT(convertToWT2V(sum) * (WT2V)(SCALE)), dst + mad24(dx, TSIZE, dst_index));

13
modules/imgproc/test/ocl/test_warp.cpp
View File

@ -158,9 +158,10 @@ OCL_TEST_P(WarpPerspective, Mat)
/////////////////////////////////////////////////////////////////////////////////////////////////
//// resize
PARAM_TEST_CASE(Resize, MatType, double, double, Interpolation, bool)
PARAM_TEST_CASE(Resize, MatType, double, double, Interpolation, bool, int)
{
int type, interpolation;
int widthMultiple;
double fx, fy;
bool useRoi;
@ -174,6 +175,7 @@ PARAM_TEST_CASE(Resize, MatType, double, double, Interpolation, bool)
fy = GET_PARAM(2);
interpolation = GET_PARAM(3);
useRoi = GET_PARAM(4);
widthMultiple = GET_PARAM(5);
}
void random_roi()
@ -181,6 +183,9 @@ PARAM_TEST_CASE(Resize, MatType, double, double, Interpolation, bool)
CV_Assert(fx > 0 && fy > 0);
Size srcRoiSize = randomSize(1, MAX_VALUE), dstRoiSize;
// Make sure the width is a multiple of the requested value, and no more
srcRoiSize.width &= ~((widthMultiple * 2) - 1);
srcRoiSize.width += widthMultiple;
dstRoiSize.width = cvRound(srcRoiSize.width * fx);
dstRoiSize.height = cvRound(srcRoiSize.height * fy);
@ -334,14 +339,16 @@ OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarp, Resize, Combine(
Values(0.5, 1.5, 2.0, 0.2),
Values(0.5, 1.5, 2.0, 0.2),
Values((Interpolation)INTER_NEAREST, (Interpolation)INTER_LINEAR),
Bool()));
Bool(),
Values(1, 16)));
OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarpResizeArea, Resize, Combine(
Values((MatType)CV_8UC1, CV_8UC4, CV_32FC1, CV_32FC4),
Values(0.7, 0.4, 0.5),
Values(0.3, 0.6, 0.5),
Values((Interpolation)INTER_AREA),
Bool()));
Bool(),
Values(1, 16)));
OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarp, Remap_INTER_LINEAR, Combine(
Values(CV_8U, CV_16U, CV_32F),

30
modules/video/src/lkpyramid.cpp
View File

@ -890,6 +890,26 @@ namespace cv
std::vector<UMat> prevPyr; prevPyr.resize(maxLevel + 1);
std::vector<UMat> nextPyr; nextPyr.resize(maxLevel + 1);
// allocate buffers with aligned pitch to be able to use cl_khr_image2d_from_buffer extention
// This is the required pitch alignment in pixels
int pitchAlign = (int)ocl::Device::getDefault().imagePitchAlignment();
if (pitchAlign>0)
{
prevPyr[0] = UMat(prevImg.rows,(prevImg.cols+pitchAlign-1)&(-pitchAlign),prevImg.type()).colRange(0,prevImg.cols);
nextPyr[0] = UMat(nextImg.rows,(nextImg.cols+pitchAlign-1)&(-pitchAlign),nextImg.type()).colRange(0,nextImg.cols);
for (int level = 1; level <= maxLevel; ++level)
{
int cols,rows;
// allocate buffers with aligned pitch to be able to use image on buffer extention
cols = (prevPyr[level - 1].cols+1)/2;
rows = (prevPyr[level - 1].rows+1)/2;
prevPyr[level] = UMat(rows,(cols+pitchAlign-1)&(-pitchAlign),prevPyr[level-1].type()).colRange(0,cols);
cols = (nextPyr[level - 1].cols+1)/2;
rows = (nextPyr[level - 1].rows+1)/2;
nextPyr[level] = UMat(rows,(cols+pitchAlign-1)&(-pitchAlign),nextPyr[level-1].type()).colRange(0,cols);
}
}
prevImg.convertTo(prevPyr[0], CV_32F);
nextImg.convertTo(nextPyr[0], CV_32F);
@ -969,8 +989,10 @@ namespace cv
if (!kernel.create("lkSparse", cv::ocl::video::pyrlk_oclsrc, build_options))
return false;
ocl::Image2D imageI(I);
ocl::Image2D imageJ(J);
CV_Assert(I.depth() == CV_32F && J.depth() == CV_32F);
ocl::Image2D imageI(I, false, ocl::Image2D::canCreateAlias(I));
ocl::Image2D imageJ(J, false, ocl::Image2D::canCreateAlias(J));
int idxArg = 0;
idxArg = kernel.set(idxArg, imageI); //image2d_t I
idxArg = kernel.set(idxArg, imageJ); //image2d_t J
@ -1070,7 +1092,9 @@ void cv::calcOpticalFlowPyrLK( InputArray _prevImg, InputArray _nextImg,
TermCriteria criteria,
int flags, double minEigThreshold )
{
bool use_opencl = ocl::useOpenCL() && (_prevImg.isUMat() || _nextImg.isUMat());
bool use_opencl = ocl::useOpenCL() &&
(_prevImg.isUMat() || _nextImg.isUMat()) &&
ocl::Image2D::isFormatSupported(CV_32F, 1, false);
if ( use_opencl && ocl_calcOpticalFlowPyrLK(_prevImg, _nextImg, _prevPts, _nextPts, _status, _err, winSize, maxLevel, criteria, flags/*, minEigThreshold*/))
return;

4
modules/video/src/tvl1flow.cpp
View File

@ -352,7 +352,9 @@ OpticalFlowDual_TVL1::OpticalFlowDual_TVL1()
void OpticalFlowDual_TVL1::calc(InputArray _I0, InputArray _I1, InputOutputArray _flow)
{
CV_OCL_RUN(_flow.isUMat(), calc_ocl(_I0, _I1, _flow))
CV_OCL_RUN(_flow.isUMat() &&
ocl::Image2D::isFormatSupported(CV_32F, 1, false),
calc_ocl(_I0, _I1, _flow))
Mat I0 = _I0.getMat();
Mat I1 = _I1.getMat();