opencv 矩阵乘法

cvMul进行逐点相乘。

矩阵相乘应使用cvGEMM函数

GEMM

Performs generalized matrix multiplication

void  cvGEMM( const CvArr* src1, const CvArr* src2, double alpha,              const CvArr* src3, double beta, CvArr* dst, int tABC=0 );#define cvMatMulAdd( src1, src2, src3, dst ) cvGEMM( src1, src2, 1, src3, 1, dst, 0 )#define cvMatMul( src1, src2, dst ) cvMatMulAdd( src1, src2, 0, dst )

src1

The first source array.

src2

The second source array.

src3

The third source array (shift). Can be NULL, if there is no shift.

dst

The destination array.

tABC

The operation flags that can be 0 or combination of the following values:
CV_GEMM_A_T - transpose src1
CV_GEMM_B_T - transpose src2
CV_GEMM_C_T - transpose src3
for example, CV_GEMM_A_T+CV_GEMM_C_T corresponds to

alpha*src1T*src2 + beta*srcT

The function cvGEMM performs generalized matrix multiplication:

dst = alpha*op(src1)*op(src2) + beta*op(src3), where op(X) is X or XT

All the matrices should have the same data type and the coordinated sizes. Real or complex floating-point matrices are s