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opencv/modules/core/src/matmul.dispatch.cpp
Alexander Smorkalov 0044047782
Merge pull request #25598 from asmorkalov:as/tables_range_check_core 
Check range for type-dependant function tables #25598

Address https://github.com/opencv/opencv/issues/24703

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-05-17 10:48:40 +03:00

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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
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// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.
// Copyright (C) 2014-2015, Itseez Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
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// (including, but not limited to, procurement of substitute goods or services;
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// and on any theory of liability, whether in contract, strict liability,
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//M*/
#include "precomp.hpp"
#include <opencv2/core/utils/logger.hpp>
#include "opencl_kernels_core.hpp"
#include "opencv2/core/opencl/runtime/opencl_clblas.hpp"
#include "opencv2/core/opencl/runtime/opencl_core.hpp"
#include "intel_gpu_gemm.inl.hpp"
#include "matmul.simd.hpp"
#include "matmul.simd_declarations.hpp" // defines CV_CPU_DISPATCH_MODES_ALL=AVX2,...,BASELINE based on CMakeLists.txt content
namespace cv
{
/****************************************************************************************\
* GEMM *
\****************************************************************************************/
#ifdef HAVE_CLAMDBLAS
static bool ocl_gemm_amdblas( InputArray matA, InputArray matB, double alpha,
InputArray matC, double beta, OutputArray matD, int flags )
{
int type = matA.type(), esz = CV_ELEM_SIZE(type);
bool haveC = matC.kind() != cv::_InputArray::NONE;
Size sizeA = matA.size(), sizeB = matB.size(), sizeC = haveC ? matC.size() : Size(0, 0);
bool atrans = (flags & GEMM_1_T) != 0, btrans = (flags & GEMM_2_T) != 0, ctrans = (flags & GEMM_3_T) != 0;
if (atrans)
sizeA = Size(sizeA.height, sizeA.width);
if (btrans)
sizeB = Size(sizeB.height, sizeB.width);
if (haveC && ctrans)
sizeC = Size(sizeC.height, sizeC.width);
Size sizeD(sizeB.width, sizeA.height);
CV_Assert( matB.type() == type && (!haveC || matC.type() == type) );
CV_Assert( sizeA.width == sizeB.height && (!haveC || sizeC == sizeD) );
matD.create(sizeD, type);
if ( matA.offset() % esz != 0 || matA.step() % esz != 0 ||
matB.offset() % esz != 0 || matB.step() % esz != 0 ||
(haveC && (matC.offset() % esz != 0 || matC.step() % esz != 0)) )
return false;
UMat A = matA.getUMat(), B = matB.getUMat(), D = matD.getUMat();
if (!ocl::internal::isCLBuffer(A) || !ocl::internal::isCLBuffer(B) || !ocl::internal::isCLBuffer(D))
{
return false;
}
if (haveC)
{
UMat C = matC.getUMat();
if (!ocl::internal::isCLBuffer(C))
return false;
}
if (haveC)
ctrans ? transpose(matC, D) : matC.copyTo(D);
else
D.setTo(Scalar::all(0));
int M = sizeD.height, N = sizeD.width, K = sizeA.width;
int lda = (int)A.step / esz, ldb = (int)B.step / esz, ldc = (int)D.step / esz;
int offa = (int)A.offset / esz, offb = (int)B.offset / esz, offc = (int)D.offset / esz;
cl_command_queue clq = (cl_command_queue)ocl::Queue::getDefault().ptr();
clblasTranspose transA = atrans ? clblasTrans : clblasNoTrans;
clblasTranspose transB = btrans ? clblasTrans : clblasNoTrans;
clblasOrder order = clblasRowMajor;
clblasStatus status = clblasSuccess;
if (type == CV_32FC1)
status = clblasSgemm(order, transA, transB, M, N, K,
(cl_float)alpha, (const cl_mem)A.handle(ACCESS_READ), offa, lda,
(const cl_mem)B.handle(ACCESS_READ), offb, ldb,
(cl_float)beta, (cl_mem)D.handle(ACCESS_RW), offc, ldc,
1, &clq, 0, NULL, NULL);
else if (type == CV_64FC1)
status = clblasDgemm(order, transA, transB, M, N, K,
alpha, (const cl_mem)A.handle(ACCESS_READ), offa, lda,
(const cl_mem)B.handle(ACCESS_READ), offb, ldb,
beta, (cl_mem)D.handle(ACCESS_RW), offc, ldc,
1, &clq, 0, NULL, NULL);
else if (type == CV_32FC2)
{
cl_float2 alpha_2 = { { (cl_float)alpha, 0 } };
cl_float2 beta_2 = { { (cl_float)beta, 0 } };
status = clblasCgemm(order, transA, transB, M, N, K,
alpha_2, (const cl_mem)A.handle(ACCESS_READ), offa, lda,
(const cl_mem)B.handle(ACCESS_READ), offb, ldb,
beta_2, (cl_mem)D.handle(ACCESS_RW), offc, ldc,
1, &clq, 0, NULL, NULL);
}
else if (type == CV_64FC2)
{
cl_double2 alpha_2 = { { alpha, 0 } };
cl_double2 beta_2 = { { beta, 0 } };
status = clblasZgemm(order, transA, transB, M, N, K,
alpha_2, (const cl_mem)A.handle(ACCESS_READ), offa, lda,
(const cl_mem)B.handle(ACCESS_READ), offb, ldb,
beta_2, (cl_mem)D.handle(ACCESS_RW), offc, ldc,
1, &clq, 0, NULL, NULL);
}
else
CV_Error(Error::StsUnsupportedFormat, "");
return status == clblasSuccess;
}
#endif
#ifdef HAVE_OPENCL
static bool ocl_gemm( InputArray matA, InputArray matB, double alpha,
InputArray matC, double beta, OutputArray matD, int flags )
{
int type = matA.type();
int depth = CV_MAT_DEPTH(type);
int cn = CV_MAT_CN(type);
CV_CheckTypeEQ(type, matB.type(), "");
CV_CheckType(type, type == CV_32FC1 || type == CV_64FC1 || type == CV_32FC2 || type == CV_64FC2, "");
const ocl::Device & dev = ocl::Device::getDefault();
bool doubleSupport = dev.doubleFPConfig() > 0;
if (!doubleSupport && depth == CV_64F)
return false;
bool haveC = matC.kind() != cv::_InputArray::NONE;
Size sizeA = matA.size(), sizeB = matB.size(), sizeC = haveC ? matC.size() : Size(0, 0);
bool atrans = (flags & GEMM_1_T) != 0, btrans = (flags & GEMM_2_T) != 0, ctrans = (flags & GEMM_3_T) != 0;
if (haveC)
CV_CheckTypeEQ(type, matC.type(), "");
Size sizeD(((btrans) ? sizeB.height : sizeB.width),
((atrans) ? sizeA.width : sizeA.height));
if (atrans)
sizeA = Size(sizeA.height, sizeA.width);
if (btrans)
sizeB = Size(sizeB.height, sizeB.width);
if (haveC && ctrans)
sizeC = Size(sizeC.height, sizeC.width);
CV_CheckEQ(sizeA.width, sizeB.height, "");
if (haveC)
CV_CheckEQ(sizeC, sizeD, "");
UMat A = matA.getUMat();
UMat B = matB.getUMat();
matD.create(sizeD, type);
UMat D = matD.getUMat();
bool isPropagatedC2D = false; // D content is updated with C / C.t()
if (dev.intelSubgroupsSupport() && (depth == CV_32F) && cn == 1)
{
if (haveC && beta != 0.0)
{
ctrans ? transpose(matC, D) : matC.copyTo(D);
isPropagatedC2D = true;
}
else
{
beta = 0.0;
}
bool res = intel_gpu_gemm(A, matA.size(),
B, matB.size(),
D, sizeD,
alpha,
beta,
atrans, btrans,
isPropagatedC2D);
if (res)
return true;
// fallback on generic OpenCL code
}
if (sizeD.width < 8 || sizeD.height < 8)
return false;
String opts;
int wg_size = (int)dev.maxWorkGroupSize();
int sizeDmin = std::min(sizeD.width, sizeD.height);
wg_size = std::min(wg_size, sizeDmin * sizeDmin);
int block_size = (wg_size / (32*cn) < 32) ? (wg_size / (16*cn) < 16) ? (wg_size / (8*cn) < 8) ? 1 : 8 : 16 : 32;
if (atrans)
A = A.t();
if (btrans)
B = B.t();
if (haveC && !isPropagatedC2D)
ctrans ? transpose(matC, D) : matC.copyTo(D);
int vectorWidths[] = { 4, 4, 2, 2, 1, 4, cn, -1 };
int kercn = ocl::checkOptimalVectorWidth(vectorWidths, B, D);
opts += format(" -D T=%s -D T1=%s -D WT=%s -D cn=%d -D kercn=%d -D LOCAL_SIZE=%d%s%s%s",
ocl::typeToStr(type), ocl::typeToStr(depth), ocl::typeToStr(CV_MAKETYPE(depth, kercn)),
cn, kercn, block_size,
(sizeA.width % block_size !=0) ? " -D NO_MULT" : "",
haveC ? " -D HAVE_C" : "",
doubleSupport ? " -D DOUBLE_SUPPORT" : "");
ocl::Kernel k("gemm", cv::ocl::core::gemm_oclsrc, opts);
if (k.empty())
return false;
if (depth == CV_64F)
k.args(ocl::KernelArg::ReadOnlyNoSize(A),
ocl::KernelArg::ReadOnlyNoSize(B, cn, kercn),
ocl::KernelArg::ReadWrite(D, cn, kercn),
sizeA.width, alpha, beta);
else
k.args(ocl::KernelArg::ReadOnlyNoSize(A),
ocl::KernelArg::ReadOnlyNoSize(B, cn, kercn),
ocl::KernelArg::ReadWrite(D, cn, kercn),
sizeA.width, (float)alpha, (float)beta);
size_t globalsize[2] = { (size_t)sizeD.width * cn / kercn, (size_t)sizeD.height};
size_t localsize[2] = { (size_t)block_size, (size_t)block_size};
return k.run(2, globalsize, block_size !=1 ? localsize : NULL, false);
}
#endif
namespace hal {
void gemm32f(const float* src1, size_t src1_step, const float* src2, size_t src2_step,
float alpha, const float* src3, size_t src3_step, float beta, float* dst, size_t dst_step,
int m_a, int n_a, int n_d, int flags)
{
CV_INSTRUMENT_REGION();
CALL_HAL(gemm32f, cv_hal_gemm32f, src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags)
#ifdef CV_GEMM_BASELINE_ONLY
CV_CPU_CALL_BASELINE(gemm32f, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags));
#else
CV_CPU_DISPATCH(gemm32f, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags),
CV_CPU_DISPATCH_MODES_ALL);
#endif
}
void gemm64f(const double* src1, size_t src1_step, const double* src2, size_t src2_step,
double alpha, const double* src3, size_t src3_step, double beta, double* dst, size_t dst_step,
int m_a, int n_a, int n_d, int flags)
{
CV_INSTRUMENT_REGION();
CALL_HAL(gemm64f, cv_hal_gemm64f, src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags)
#ifdef CV_GEMM_BASELINE_ONLY
CV_CPU_CALL_BASELINE(gemm64f, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags));
#else
CV_CPU_DISPATCH(gemm64f, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags),
CV_CPU_DISPATCH_MODES_ALL);
#endif
}
void gemm32fc(const float* src1, size_t src1_step, const float* src2, size_t src2_step,
float alpha, const float* src3, size_t src3_step, float beta, float* dst, size_t dst_step,
int m_a, int n_a, int n_d, int flags)
{
CV_INSTRUMENT_REGION();
CALL_HAL(gemm32fc, cv_hal_gemm32fc, src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags)
#ifdef CV_GEMM_BASELINE_ONLY
CV_CPU_CALL_BASELINE(gemm32fc, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags));
#else
CV_CPU_DISPATCH(gemm32fc, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags),
CV_CPU_DISPATCH_MODES_ALL);
#endif
}
void gemm64fc(const double* src1, size_t src1_step, const double* src2, size_t src2_step,
double alpha, const double* src3, size_t src3_step, double beta, double* dst, size_t dst_step,
int m_a, int n_a, int n_d, int flags)
{
CV_INSTRUMENT_REGION();
CALL_HAL(gemm64fc, cv_hal_gemm64fc, src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags)
#ifdef CV_GEMM_BASELINE_ONLY
CV_CPU_CALL_BASELINE(gemm64fc, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags));
#else
CV_CPU_DISPATCH(gemm64fc, (src1, src1_step, src2, src2_step, alpha, src3, src3_step, beta, dst, dst_step, m_a, n_a, n_d, flags),
CV_CPU_DISPATCH_MODES_ALL);
#endif
}
} // namespace hal
void gemm(InputArray matA, InputArray matB, double alpha,
InputArray matC, double beta, OutputArray _matD, int flags)
{
#ifdef HAVE_CLAMDBLAS
CV_OCL_RUN(ocl::haveAmdBlas() && matA.dims() <= 2 && matB.dims() <= 2 && matC.dims() <= 2 && _matD.isUMat() &&
matA.cols() > 20 && matA.rows() > 20 && matB.cols() > 20, // since it works incorrect for small sizes
ocl_gemm_amdblas(matA, matB, alpha, matC, beta, _matD, flags))
#endif
#ifdef HAVE_OPENCL
CV_OCL_RUN(_matD.isUMat() && matA.dims() <= 2 && matB.dims() <= 2 && matC.dims() <= 2,
ocl_gemm(matA, matB, alpha, matC, beta, _matD, flags))
#endif
Mat A = matA.getMat(), B = matB.getMat(), C = beta != 0.0 ? matC.getMat() : Mat();
Size a_size = A.size(), d_size;
int len = 0, type = A.type();
CV_Assert_N( type == B.type(), (type == CV_32FC1 || type == CV_64FC1 || type == CV_32FC2 || type == CV_64FC2) );
switch( flags & (GEMM_1_T|GEMM_2_T) )
{
case 0:
d_size = Size( B.cols, a_size.height );
len = B.rows;
CV_Assert( a_size.width == len );
break;
case 1:
d_size = Size( B.cols, a_size.width );
len = B.rows;
CV_Assert( a_size.height == len );
break;
case 2:
d_size = Size( B.rows, a_size.height );
len = B.cols;
CV_Assert( a_size.width == len );
break;
case 3:
d_size = Size( B.rows, a_size.width );
len = B.cols;
CV_Assert( a_size.height == len );
break;
}
if( !C.empty() )
{
CV_Assert_N( C.type() == type,
(((flags&GEMM_3_T) == 0 && C.rows == d_size.height && C.cols == d_size.width) ||
((flags&GEMM_3_T) != 0 && C.rows == d_size.width && C.cols == d_size.height)));
}
_matD.create( d_size.height, d_size.width, type );
Mat D = _matD.getMat();
if( (flags & GEMM_3_T) != 0 && C.data == D.data )
{
transpose( C, C );
flags &= ~GEMM_3_T;
}
Mat *DProxyPtr = &D, DProxy;
if( D.data == A.data || D.data == B.data )
{
DProxy = Mat(d_size.height, d_size.width, D.type());
DProxyPtr = &DProxy;
}
if( type == CV_32FC1 )
hal::gemm32f(A.ptr<float>(), A.step, B.ptr<float>(), B.step, static_cast<float>(alpha),
C.ptr<float>(), C.step, static_cast<float>(beta),
DProxyPtr->ptr<float>(), DProxyPtr->step,
a_size.height, a_size.width, DProxyPtr->cols, flags);
else if( type == CV_64FC1 )
hal::gemm64f(A.ptr<double>(), A.step, B.ptr<double>(), B.step, alpha,
C.ptr<double>(), C.step, beta,
DProxyPtr->ptr<double>(), DProxyPtr->step,
a_size.height, a_size.width, DProxyPtr->cols, flags);
else if( type == CV_32FC2 )
hal::gemm32fc(A.ptr<float>(), A.step, B.ptr<float>(), B.step, static_cast<float>(alpha),
C.ptr<float>(), C.step, static_cast<float>(beta),
DProxyPtr->ptr<float>(), DProxyPtr->step,
a_size.height, a_size.width, DProxyPtr->cols, flags);
else
{
CV_Assert( type == CV_64FC2 );
hal::gemm64fc(A.ptr<double>(), A.step, B.ptr<double>(), B.step, alpha,
C.ptr<double>(), C.step, beta,
D.ptr<double>(), D.step,
a_size.height, a_size.width, DProxyPtr->cols, flags);
}
if(DProxyPtr != &D)
DProxyPtr->copyTo(D);
}
/****************************************************************************************\
* Transform *
\****************************************************************************************/
static TransformFunc getTransformFunc(int depth)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(getTransformFunc, (depth),
CV_CPU_DISPATCH_MODES_ALL);
}
static TransformFunc getDiagTransformFunc(int depth)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(getDiagTransformFunc, (depth),
CV_CPU_DISPATCH_MODES_ALL);
}
void transform(InputArray _src, OutputArray _dst, InputArray _mtx)
{
CV_INSTRUMENT_REGION();
Mat src = _src.getMat(), m = _mtx.getMat();
int depth = src.depth(), scn = src.channels(), dcn = m.rows;
CV_Assert( scn == m.cols || scn + 1 == m.cols );
bool isDiag = false;
_dst.create( src.size(), CV_MAKETYPE(depth, dcn) );
Mat dst = _dst.getMat();
if (src.data == dst.data) // inplace case
{
CV_Assert(scn == dcn);
src = src.clone(); // TODO Add performance warning
}
int mtype = depth == CV_32S || depth == CV_64F ? CV_64F : CV_32F;
AutoBuffer<double> _mbuf;
double* mbuf;
if( !m.isContinuous() || m.type() != mtype || m.cols != scn + 1 )
{
_mbuf.allocate(dcn*(scn+1));
mbuf = _mbuf.data();
Mat tmp(dcn, scn+1, mtype, mbuf);
memset(tmp.ptr(), 0, tmp.total()*tmp.elemSize());
if( m.cols == scn+1 )
m.convertTo(tmp, mtype);
else
{
Mat tmppart = tmp.colRange(0, m.cols);
m.convertTo(tmppart, mtype);
}
m = tmp;
}
else
mbuf = m.ptr<double>();
if( scn == dcn )
{
int i, j;
double eps = mtype == CV_32F ? FLT_EPSILON : DBL_EPSILON;
if( scn == 1 )
{
double alpha, beta;
if( mtype == CV_32F )
alpha = m.at<float>(0), beta = m.at<float>(1);
else
alpha = m.at<double>(0), beta = m.at<double>(1);
src.convertTo(dst, dst.type(), alpha, beta);
return;
}
for( i = 0, isDiag = true; isDiag && i < scn; i++ )
{
for( j = 0; isDiag && j < scn; j++ )
{
double v = mtype == CV_32F ? m.at<float>(i, j) : m.at<double>(i, j);
if( i != j && fabs(v) > eps )
isDiag = false;
}
}
}
TransformFunc func = isDiag ? getDiagTransformFunc(depth): getTransformFunc(depth);
CV_Assert( func != 0 );
const Mat* arrays[] = {&src, &dst, 0};
uchar* ptrs[2] = {};
NAryMatIterator it(arrays, ptrs);
size_t i, total = it.size;
for( i = 0; i < it.nplanes; i++, ++it )
func( ptrs[0], ptrs[1], (uchar*)mbuf, (int)total, scn, dcn );
}
/****************************************************************************************\
* Perspective Transform *
\****************************************************************************************/
static TransformFunc getPerspectiveTransform(int depth)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(getPerspectiveTransform, (depth),
CV_CPU_DISPATCH_MODES_ALL);
}
void perspectiveTransform(InputArray _src, OutputArray _dst, InputArray _mtx)
{
CV_INSTRUMENT_REGION();
Mat src = _src.getMat(), m = _mtx.getMat();
int depth = src.depth(), scn = src.channels(), dcn = m.rows-1;
CV_Assert( scn + 1 == m.cols );
CV_Assert( depth == CV_32F || depth == CV_64F );
_dst.create( src.size(), CV_MAKETYPE(depth, dcn) );
Mat dst = _dst.getMat();
const int mtype = CV_64F;
AutoBuffer<double> _mbuf;
double* mbuf = m.ptr<double>();
if( !m.isContinuous() || m.type() != mtype )
{
_mbuf.allocate((dcn+1)*(scn+1));
mbuf = _mbuf.data();
Mat tmp(dcn+1, scn+1, mtype, mbuf);
m.convertTo(tmp, mtype);
m = tmp;
}
TransformFunc func = getPerspectiveTransform(depth);
CV_Assert( func != 0 );
const Mat* arrays[] = {&src, &dst, 0};
uchar* ptrs[2] = {};
NAryMatIterator it(arrays, ptrs);
size_t i, total = it.size;
for( i = 0; i < it.nplanes; i++, ++it )
func( ptrs[0], ptrs[1], (uchar*)mbuf, (int)total, scn, dcn );
}
/****************************************************************************************\
* ScaleAdd *
\****************************************************************************************/
#ifdef HAVE_OPENCL
static bool ocl_scaleAdd( InputArray _src1, double alpha, InputArray _src2, OutputArray _dst, int type )
{
const ocl::Device & d = ocl::Device::getDefault();
bool doubleSupport = d.doubleFPConfig() > 0;
Size size = _src1.size();
int depth = CV_MAT_DEPTH(type);
if ( (!doubleSupport && depth == CV_64F) || size != _src2.size() )
return false;
_dst.create(size, type);
int cn = CV_MAT_CN(type), wdepth = std::max(depth, CV_32F);
int kercn = ocl::predictOptimalVectorWidthMax(_src1, _src2, _dst),
rowsPerWI = d.isIntel() ? 4 : 1;
char cvt[2][50];
ocl::Kernel k("KF", ocl::core::arithm_oclsrc,
format("-D OP_SCALE_ADD -D BINARY_OP -D dstT=%s -D DEPTH_dst=%d -D workT=%s -D convertToWT1=%s"
" -D srcT1=dstT -D srcT2=dstT -D convertToDT=%s -D workT1=%s"
" -D wdepth=%d%s -D rowsPerWI=%d",
ocl::typeToStr(CV_MAKE_TYPE(depth, kercn)), depth,
ocl::typeToStr(CV_MAKE_TYPE(wdepth, kercn)),
ocl::convertTypeStr(depth, wdepth, kercn, cvt[0], sizeof(cvt[0])),
ocl::convertTypeStr(wdepth, depth, kercn, cvt[1], sizeof(cvt[1])),
ocl::typeToStr(wdepth), wdepth,
doubleSupport ? " -D DOUBLE_SUPPORT" : "", rowsPerWI));
if (k.empty())
return false;
UMat src1 = _src1.getUMat(), src2 = _src2.getUMat(), dst = _dst.getUMat();
ocl::KernelArg src1arg = ocl::KernelArg::ReadOnlyNoSize(src1),
src2arg = ocl::KernelArg::ReadOnlyNoSize(src2),
dstarg = ocl::KernelArg::WriteOnly(dst, cn, kercn);
if (wdepth == CV_32F)
k.args(src1arg, src2arg, dstarg, (float)alpha);
else
k.args(src1arg, src2arg, dstarg, alpha);
size_t globalsize[2] = { (size_t)dst.cols * cn / kercn, ((size_t)dst.rows + rowsPerWI - 1) / rowsPerWI };
return k.run(2, globalsize, NULL, false);
}
#endif
static ScaleAddFunc getScaleAddFunc(int depth)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(getScaleAddFunc, (depth),
CV_CPU_DISPATCH_MODES_ALL);
}
void scaleAdd(InputArray _src1, double alpha, InputArray _src2, OutputArray _dst)
{
CV_INSTRUMENT_REGION();
int type = _src1.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type);
CV_Assert( type == _src2.type() );
CV_OCL_RUN(_src1.dims() <= 2 && _src2.dims() <= 2 && _dst.isUMat(),
ocl_scaleAdd(_src1, alpha, _src2, _dst, type))
if( depth < CV_32F )
{
addWeighted(_src1, alpha, _src2, 1, 0, _dst, depth);
return;
}
Mat src1 = _src1.getMat(), src2 = _src2.getMat();
CV_Assert(src1.size == src2.size);
_dst.create(src1.dims, src1.size, type);
Mat dst = _dst.getMat();
float falpha = (float)alpha;
void* palpha = depth == CV_32F ? (void*)&falpha : (void*)&alpha;
ScaleAddFunc func = getScaleAddFunc(depth);
CV_Assert(func);
if (src1.isContinuous() && src2.isContinuous() && dst.isContinuous())
{
size_t len = src1.total()*cn;
func(src1.ptr(), src2.ptr(), dst.ptr(), (int)len, palpha);
return;
}
const Mat* arrays[] = {&src1, &src2, &dst, 0};
uchar* ptrs[3] = {};
NAryMatIterator it(arrays, ptrs);
size_t i, len = it.size*cn;
for( i = 0; i < it.nplanes; i++, ++it )
func( ptrs[0], ptrs[1], ptrs[2], (int)len, palpha );
}
/****************************************************************************************\
* Covariation Matrix *
\****************************************************************************************/
void calcCovarMatrix( const Mat* data, int nsamples, Mat& covar, Mat& _mean, int flags, int ctype )
{
CV_INSTRUMENT_REGION();
CV_Assert_N( data, nsamples > 0 );
Size size = data[0].size();
int sz = size.width * size.height, esz = (int)data[0].elemSize();
int type = data[0].type();
Mat mean;
ctype = std::max(std::max(CV_MAT_DEPTH(ctype >= 0 ? ctype : type), _mean.depth()), CV_32F);
if( (flags & CV_COVAR_USE_AVG) != 0 )
{
CV_Assert( _mean.size() == size );
if( _mean.isContinuous() && _mean.type() == ctype )
mean = _mean.reshape(1, 1);
else
{
_mean.convertTo(mean, ctype);
mean = mean.reshape(1, 1);
}
}
Mat _data(nsamples, sz, type);
for( int i = 0; i < nsamples; i++ )
{
CV_Assert_N( data[i].size() == size, data[i].type() == type );
if( data[i].isContinuous() )
memcpy( _data.ptr(i), data[i].ptr(), sz*esz );
else
{
Mat dataRow(size.height, size.width, type, _data.ptr(i));
data[i].copyTo(dataRow);
}
}
calcCovarMatrix( _data, covar, mean, (flags & ~(CV_COVAR_ROWS|CV_COVAR_COLS)) | CV_COVAR_ROWS, ctype );
if( (flags & CV_COVAR_USE_AVG) == 0 )
_mean = mean.reshape(1, size.height);
}
void calcCovarMatrix( InputArray _src, OutputArray _covar, InputOutputArray _mean, int flags, int ctype )
{
CV_INSTRUMENT_REGION();
if(_src.kind() == _InputArray::STD_VECTOR_MAT || _src.kind() == _InputArray::STD_ARRAY_MAT)
{
std::vector<cv::Mat> src;
_src.getMatVector(src);
CV_Assert( src.size() > 0 );
Size size = src[0].size();
int type = src[0].type();
ctype = std::max(std::max(CV_MAT_DEPTH(ctype >= 0 ? ctype : type), _mean.depth()), CV_32F);
Mat _data(static_cast<int>(src.size()), size.area(), type);
int i = 0;
for(std::vector<cv::Mat>::iterator each = src.begin(); each != src.end(); ++each, ++i )
{
CV_Assert_N( (*each).size() == size, (*each).type() == type );
Mat dataRow(size.height, size.width, type, _data.ptr(i));
(*each).copyTo(dataRow);
}
Mat mean;
if( (flags & CV_COVAR_USE_AVG) != 0 )
{
CV_Assert( _mean.size() == size );
if( mean.type() != ctype )
{
mean = _mean.getMat();
_mean.create(mean.size(), ctype);
Mat tmp = _mean.getMat();
mean.convertTo(tmp, ctype);
mean = tmp;
}
mean = _mean.getMat().reshape(1, 1);
}
calcCovarMatrix( _data, _covar, mean, (flags & ~(CV_COVAR_ROWS|CV_COVAR_COLS)) | CV_COVAR_ROWS, ctype );
if( (flags & CV_COVAR_USE_AVG) == 0 )
{
mean = mean.reshape(1, size.height);
mean.copyTo(_mean);
}
return;
}
Mat data = _src.getMat(), mean;
CV_Assert( ((flags & CV_COVAR_ROWS) != 0) ^ ((flags & CV_COVAR_COLS) != 0) );
bool takeRows = (flags & CV_COVAR_ROWS) != 0;
int type = data.type();
int nsamples = takeRows ? data.rows : data.cols;
CV_Assert( nsamples > 0 );
Size size = takeRows ? Size(data.cols, 1) : Size(1, data.rows);
if( (flags & CV_COVAR_USE_AVG) != 0 )
{
mean = _mean.getMat();
ctype = std::max(std::max(CV_MAT_DEPTH(ctype >= 0 ? ctype : type), mean.depth()), CV_32F);
CV_Assert( mean.size() == size );
if( mean.type() != ctype )
{
_mean.create(mean.size(), ctype);
Mat tmp = _mean.getMat();
mean.convertTo(tmp, ctype);
mean = tmp;
}
}
else
{
ctype = std::max(CV_MAT_DEPTH(ctype >= 0 ? ctype : type), CV_32F);
reduce( _src, _mean, takeRows ? 0 : 1, REDUCE_AVG, ctype );
mean = _mean.getMat();
}
mulTransposed( data, _covar, ((flags & CV_COVAR_NORMAL) == 0) ^ takeRows,
mean, (flags & CV_COVAR_SCALE) != 0 ? 1./nsamples : 1, ctype );
}
/****************************************************************************************\
* Mahalanobis *
\****************************************************************************************/
static MahalanobisImplFunc getMahalanobisImplFunc(int depth)
{
#ifdef CV_MAHALANOBIS_BASELINE_ONLY
CV_CPU_CALL_BASELINE(getMahalanobisImplFunc, (depth));
#else
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(getMahalanobisImplFunc, (depth),
CV_CPU_DISPATCH_MODES_ALL);
#endif
}
double Mahalanobis(InputArray _v1, InputArray _v2, InputArray _icovar)
{
CV_INSTRUMENT_REGION();
Mat v1 = _v1.getMat(), v2 = _v2.getMat(), icovar = _icovar.getMat();
int type = v1.type(), depth = v1.depth();
Size sz = v1.size();
int len = sz.width*sz.height*v1.channels();
AutoBuffer<double> buf(len);
CV_Assert_N( type == v2.type(), type == icovar.type(),
sz == v2.size(), len == icovar.rows && len == icovar.cols );
sz.width *= v1.channels();
if( v1.isContinuous() && v2.isContinuous() )
{
sz.width *= sz.height;
sz.height = 1;
}
MahalanobisImplFunc func = getMahalanobisImplFunc(depth);
CV_Assert(func);
double result = func(v1, v2, icovar, buf.data(), len);
return std::sqrt(result);
}
/****************************************************************************************\
* MulTransposed *
\****************************************************************************************/
static MulTransposedFunc getMulTransposedFunc(int stype, int dtype, bool ata)
{
#ifdef CV_MULTRANSPOSED_BASELINE_ONLY
CV_CPU_CALL_BASELINE(getMulTransposedFunc, (stype, dtype, ata));
#else
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(getMulTransposedFunc, (stype, dtype, ata),
CV_CPU_DISPATCH_MODES_ALL);
#endif
}
void mulTransposed(InputArray _src, OutputArray _dst, bool ata,
InputArray _delta, double scale, int dtype)
{
CV_INSTRUMENT_REGION();
Mat src = _src.getMat(), delta = _delta.getMat();
const int gemm_level = 100; // boundary above which GEMM is faster.
int stype = src.type();
dtype = std::max(std::max(CV_MAT_DEPTH(dtype >= 0 ? dtype : stype), delta.depth()), CV_32F);
CV_Assert( src.channels() == 1 );
if( !delta.empty() )
{
CV_Assert_N( delta.channels() == 1,
(delta.rows == src.rows || delta.rows == 1),
(delta.cols == src.cols || delta.cols == 1));
if( delta.type() != dtype )
delta.convertTo(delta, dtype);
}
int dsize = ata ? src.cols : src.rows;
_dst.create( dsize, dsize, dtype );
Mat dst = _dst.getMat();
if( src.data == dst.data || (stype == dtype &&
(dst.cols >= gemm_level && dst.rows >= gemm_level &&
src.cols >= gemm_level && src.rows >= gemm_level)))
{
Mat src2;
const Mat* tsrc = &src;
if( !delta.empty() )
{
if( delta.size() == src.size() )
subtract( src, delta, src2 );
else
{
repeat(delta, src.rows/delta.rows, src.cols/delta.cols, src2);
subtract( src, src2, src2 );
}
tsrc = &src2;
}
gemm( *tsrc, *tsrc, scale, Mat(), 0, dst, ata ? GEMM_1_T : GEMM_2_T );
}
else
{
MulTransposedFunc func = getMulTransposedFunc(stype, dtype, ata);
if( !func )
CV_Error( cv::Error::StsUnsupportedFormat, "" );
func( src, dst, delta, scale );
completeSymm( dst, false );
}
}
/****************************************************************************************\
* Dot Product *
\****************************************************************************************/
static double dotProd_8u(const uchar* src1, const uchar* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_8u, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
static double dotProd_8s(const schar* src1, const schar* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_8s, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
static double dotProd_16u(const ushort* src1, const ushort* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_16u, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
static double dotProd_16s(const short* src1, const short* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_16s, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
static double dotProd_32s(const int* src1, const int* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_32s, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
static double dotProd_32f(const float* src1, const float* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_32f, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
static double dotProd_64f(const double* src1, const double* src2, int len)
{
CV_INSTRUMENT_REGION();
CV_CPU_DISPATCH(dotProd_64f, (src1, src2, len),
CV_CPU_DISPATCH_MODES_ALL);
}
typedef double (*DotProdFunc)(const uchar* src1, const uchar* src2, int len);
static DotProdFunc getDotProdFunc(int depth)
{
static DotProdFunc dotProdTab[CV_DEPTH_MAX] =
{
(DotProdFunc)GET_OPTIMIZED(dotProd_8u), (DotProdFunc)GET_OPTIMIZED(dotProd_8s),
(DotProdFunc)dotProd_16u, (DotProdFunc)dotProd_16s,
(DotProdFunc)dotProd_32s, (DotProdFunc)GET_OPTIMIZED(dotProd_32f),
(DotProdFunc)dotProd_64f, 0
};
return dotProdTab[depth];
}
double Mat::dot(InputArray _mat) const
{
CV_INSTRUMENT_REGION();
Mat mat = _mat.getMat();
int cn = channels();
DotProdFunc func = getDotProdFunc(depth());
CV_Assert_N( mat.type() == type(), mat.size == size, func != 0 );
if( isContinuous() && mat.isContinuous() )
{
size_t len = total()*cn;
if( len == (size_t)(int)len )
return func(data, mat.data, (int)len);
}
const Mat* arrays[] = {this, &mat, 0};
uchar* ptrs[2] = {};
NAryMatIterator it(arrays, ptrs);
int len = (int)(it.size*cn);
double r = 0;
for( size_t i = 0; i < it.nplanes; i++, ++it )
r += func( ptrs[0], ptrs[1], len );
return r;
}
#ifdef HAVE_OPENCL
static bool ocl_dot( InputArray _src1, InputArray _src2, double & res )
{
UMat src1 = _src1.getUMat().reshape(1), src2 = _src2.getUMat().reshape(1);
int type = src1.type(), depth = CV_MAT_DEPTH(type),
kercn = ocl::predictOptimalVectorWidth(src1, src2);
bool doubleSupport = ocl::Device::getDefault().doubleFPConfig() > 0;
if ( !doubleSupport && depth == CV_64F )
return false;
int dbsize = ocl::Device::getDefault().maxComputeUnits();
size_t wgs = ocl::Device::getDefault().maxWorkGroupSize();
int ddepth = std::max(CV_32F, depth);
int wgs2_aligned = 1;
while (wgs2_aligned < (int)wgs)
wgs2_aligned <<= 1;
wgs2_aligned >>= 1;
char cvt[50];
ocl::Kernel k("reduce", ocl::core::reduce_oclsrc,
format("-D srcT=%s -D srcT1=%s -D dstT=%s -D dstTK=%s -D ddepth=%d -D convertToDT=%s -D OP_DOT "
"-D WGS=%d -D WGS2_ALIGNED=%d%s%s%s -D kercn=%d",
ocl::typeToStr(CV_MAKE_TYPE(depth, kercn)), ocl::typeToStr(depth),
ocl::typeToStr(ddepth), ocl::typeToStr(CV_MAKE_TYPE(ddepth, kercn)),
ddepth, ocl::convertTypeStr(depth, ddepth, kercn, cvt, sizeof(cvt)),
(int)wgs, wgs2_aligned, doubleSupport ? " -D DOUBLE_SUPPORT" : "",
_src1.isContinuous() ? " -D HAVE_SRC_CONT" : "",
_src2.isContinuous() ? " -D HAVE_SRC2_CONT" : "", kercn));
if (k.empty())
return false;
UMat db(1, dbsize, ddepth);
ocl::KernelArg src1arg = ocl::KernelArg::ReadOnlyNoSize(src1),
src2arg = ocl::KernelArg::ReadOnlyNoSize(src2),
dbarg = ocl::KernelArg::PtrWriteOnly(db);
k.args(src1arg, src1.cols, (int)src1.total(), dbsize, dbarg, src2arg);
size_t globalsize = dbsize * wgs;
if (k.run(1, &globalsize, &wgs, true))
{
res = sum(db.getMat(ACCESS_READ))[0];
return true;
}
return false;
}
#endif
double UMat::dot(InputArray m) const
{
CV_INSTRUMENT_REGION();
CV_Assert(m.sameSize(*this) && m.type() == type());
#ifdef HAVE_OPENCL
double r = 0;
CV_OCL_RUN_(dims <= 2, ocl_dot(*this, m, r), r)
#endif
return getMat(ACCESS_READ).dot(m);
}
} // namespace cv::
#ifndef OPENCV_EXCLUDE_C_API
/****************************************************************************************\
* Earlier API *
\****************************************************************************************/
CV_IMPL void cvGEMM( const CvArr* Aarr, const CvArr* Barr, double alpha,
const CvArr* Carr, double beta, CvArr* Darr, int flags )
{
cv::Mat A = cv::cvarrToMat(Aarr), B = cv::cvarrToMat(Barr);
cv::Mat C, D = cv::cvarrToMat(Darr);
if( Carr )
C = cv::cvarrToMat(Carr);
CV_Assert_N( (D.rows == ((flags & CV_GEMM_A_T) == 0 ? A.rows : A.cols)),
(D.cols == ((flags & CV_GEMM_B_T) == 0 ? B.cols : B.rows)),
D.type() == A.type() );
gemm( A, B, alpha, C, beta, D, flags );
}
CV_IMPL void
cvTransform( const CvArr* srcarr, CvArr* dstarr,
const CvMat* transmat, const CvMat* shiftvec )
{
cv::Mat m = cv::cvarrToMat(transmat), src = cv::cvarrToMat(srcarr), dst = cv::cvarrToMat(dstarr);
if( shiftvec )
{
cv::Mat v = cv::cvarrToMat(shiftvec).reshape(1,m.rows),
_m(m.rows, m.cols + 1, m.type()), m1 = _m.colRange(0,m.cols), v1 = _m.col(m.cols);
m.convertTo(m1, m1.type());
v.convertTo(v1, v1.type());
m = _m;
}
CV_Assert_N( dst.depth() == src.depth(), dst.channels() == m.rows );
cv::transform( src, dst, m );
}
CV_IMPL void
cvPerspectiveTransform( const CvArr* srcarr, CvArr* dstarr, const CvMat* mat )
{
cv::Mat m = cv::cvarrToMat(mat), src = cv::cvarrToMat(srcarr), dst = cv::cvarrToMat(dstarr);
CV_Assert_N( dst.type() == src.type(), dst.channels() == m.rows-1 );
cv::perspectiveTransform( src, dst, m );
}
CV_IMPL void cvScaleAdd( const CvArr* srcarr1, CvScalar scale,
const CvArr* srcarr2, CvArr* dstarr )
{
cv::Mat src1 = cv::cvarrToMat(srcarr1), dst = cv::cvarrToMat(dstarr);
CV_Assert_N( src1.size == dst.size, src1.type() == dst.type() );
cv::scaleAdd( src1, scale.val[0], cv::cvarrToMat(srcarr2), dst );
}
CV_IMPL void
cvCalcCovarMatrix( const CvArr** vecarr, int count,
CvArr* covarr, CvArr* avgarr, int flags )
{
cv::Mat cov0 = cv::cvarrToMat(covarr), cov = cov0, mean0, mean;
CV_Assert_N( vecarr != 0, count >= 1 );
if( avgarr )
mean = mean0 = cv::cvarrToMat(avgarr);
if( (flags & CV_COVAR_COLS) != 0 || (flags & CV_COVAR_ROWS) != 0 )
{
cv::Mat data = cv::cvarrToMat(vecarr[0]);
cv::calcCovarMatrix( data, cov, mean, flags, cov.type() );
}
else
{
std::vector<cv::Mat> data(count);
for( int i = 0; i < count; i++ )
data[i] = cv::cvarrToMat(vecarr[i]);
cv::calcCovarMatrix( &data[0], count, cov, mean, flags, cov.type() );
}
if( mean.data != mean0.data && mean0.data )
mean.convertTo(mean0, mean0.type());
if( cov.data != cov0.data )
cov.convertTo(cov0, cov0.type());
}
CV_IMPL double
cvMahalanobis( const CvArr* srcAarr, const CvArr* srcBarr, const CvArr* matarr )
{
return cv::Mahalanobis(cv::cvarrToMat(srcAarr),
cv::cvarrToMat(srcBarr), cv::cvarrToMat(matarr));
}
CV_IMPL void
cvMulTransposed( const CvArr* srcarr, CvArr* dstarr,
int order, const CvArr* deltaarr, double scale )
{
cv::Mat src = cv::cvarrToMat(srcarr), dst0 = cv::cvarrToMat(dstarr), dst = dst0, delta;
if( deltaarr )
delta = cv::cvarrToMat(deltaarr);
cv::mulTransposed( src, dst, order != 0, delta, scale, dst.type());
if( dst.data != dst0.data )
dst.convertTo(dst0, dst0.type());
}
CV_IMPL double cvDotProduct( const CvArr* srcAarr, const CvArr* srcBarr )
{
return cv::cvarrToMat(srcAarr).dot(cv::cvarrToMat(srcBarr));
}
CV_IMPL void
cvCalcPCA( const CvArr* data_arr, CvArr* avg_arr, CvArr* eigenvals, CvArr* eigenvects, int flags )
{
cv::Mat data = cv::cvarrToMat(data_arr), mean0 = cv::cvarrToMat(avg_arr);
cv::Mat evals0 = cv::cvarrToMat(eigenvals), evects0 = cv::cvarrToMat(eigenvects);
cv::Mat mean = mean0, evals = evals0, evects = evects0;
cv::PCA pca;
pca.mean = mean;
pca.eigenvalues = evals;
pca.eigenvectors = evects;
pca(data, (flags & CV_PCA_USE_AVG) ? mean : cv::Mat(),
flags, !evals.empty() ? evals.rows + evals.cols - 1 : 0);
if( pca.mean.size() == mean.size() )
pca.mean.convertTo( mean, mean.type() );
else
{
cv::Mat temp; pca.mean.convertTo( temp, mean.type() );
transpose( temp, mean );
}
evals = pca.eigenvalues;
evects = pca.eigenvectors;
int ecount0 = evals0.cols + evals0.rows - 1;
int ecount = evals.cols + evals.rows - 1;
CV_Assert_N( (evals0.cols == 1 || evals0.rows == 1),
ecount0 <= ecount,
evects0.cols == evects.cols,
evects0.rows == ecount0 );
cv::Mat temp = evals0;
if( evals.rows == 1 )
evals.colRange(0, ecount0).convertTo(temp, evals0.type());
else
evals.rowRange(0, ecount0).convertTo(temp, evals0.type());
if( temp.data != evals0.data )
transpose(temp, evals0);
evects.rowRange(0, ecount0).convertTo( evects0, evects0.type() );
// otherwise some datatype's or size's were incorrect, so the output arrays have been reallocated
CV_Assert( mean0.data == mean.data );
}
CV_IMPL void
cvProjectPCA( const CvArr* data_arr, const CvArr* avg_arr,
const CvArr* eigenvects, CvArr* result_arr )
{
cv::Mat data = cv::cvarrToMat(data_arr), mean = cv::cvarrToMat(avg_arr);
cv::Mat evects = cv::cvarrToMat(eigenvects), dst0 = cv::cvarrToMat(result_arr), dst = dst0;
cv::PCA pca;
pca.mean = mean;
int n;
if( mean.rows == 1 )
{
CV_Assert_N(dst.cols <= evects.rows, dst.rows == data.rows);
n = dst.cols;
}
else
{
CV_Assert_N(dst.rows <= evects.rows, dst.cols == data.cols);
n = dst.rows;
}
pca.eigenvectors = evects.rowRange(0, n);
cv::Mat result = pca.project(data);
if( result.cols != dst.cols )
result = result.reshape(1, 1);
result.convertTo(dst, dst.type());
CV_Assert(dst0.data == dst.data);
}
CV_IMPL void
cvBackProjectPCA( const CvArr* proj_arr, const CvArr* avg_arr,
const CvArr* eigenvects, CvArr* result_arr )
{
cv::Mat data = cv::cvarrToMat(proj_arr), mean = cv::cvarrToMat(avg_arr);
cv::Mat evects = cv::cvarrToMat(eigenvects), dst0 = cv::cvarrToMat(result_arr), dst = dst0;
cv::PCA pca;
pca.mean = mean;
int n;
if( mean.rows == 1 )
{
CV_Assert_N(data.cols <= evects.rows, dst.rows == data.rows);
n = data.cols;
}
else
{
CV_Assert_N(data.rows <= evects.rows, dst.cols == data.cols);
n = data.rows;
}
pca.eigenvectors = evects.rowRange(0, n);
cv::Mat result = pca.backProject(data);
result.convertTo(dst, dst.type());
CV_Assert(dst0.data == dst.data);
}
#endif // OPENCV_EXCLUDE_C_API
/* End of file. */
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