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CvMatçç»æå®ä¹ï¼
typedef struct CvMat
{
int type; /* CvMat æ è¯ (CV_MAT_MAGIC_VAL), å
ç´ ç±»ååæ è®° */
int step; /* 以åè为åä½çè¡æ°æ®é¿åº¦*/
int* refcount; /* æ°æ®å¼ç¨è®¡æ° */
union
{
uchar* ptr;
short* s;
int* i;
float* fl;
double* db;
} data; /* data æé */
#ifdef __cplusplus
union
{
int rows;
int height;
};
union
{
int cols;
int width;
};
#else
int rows; /* è¡æ° */
int cols; /* åæ°*/
#endif
} CvMat;CvMatåé
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CvMat* cvCreateMat(int rows, int cols, int type);
ä¾å¦ï¼CvMat* M = cvCreateMat(4, 4, CV_32FC1);
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CvMatéæ¾ç©éµç©ºé´ï¼
CvMat* M = cvCreateMat(4, 4, CV_32FC1);
cvReleaseMat(&M);
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CvMat* M1 = cvCreateMat(4, 4, CV_32FC1);
CvMat* M2;
M2 = cvCloneMat(M1);
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double a[] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}, {10, 11, 12} };
CvMat Ma = cvMat(4, 3, CV_32FC1, a);//method 1
CvMat Ma; cvInitMatHeader(&Ma, 3, 4, CV_32FC1, a);//method2
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CvMat* A = cvCreateMat(3, 3, CV_32FC1);
CvMat* B = cvCreateMat(3, 3, CV_32FC1);
CvMat* C = cvCreateMat(3, 1, CV_32FC1);
cvEigenVV(A, B, C);//Cæ¯Açç¹å¾å¼(éåºæå)ï¼èBåæ¯Açç¹å¾åé(æ¯è¡)
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//è·å¾ç¹å¾åé
//add by maozhaoyang
vector<vector<double> > CImgClusterDemoView::GetEigenMat(const vector<vector<double> > &k)
{
CvMat* M = cvCreateMat(k.size(),k.size(),CV_64FC1);
cvZero(M);
for(int i = 0; i < k.size(); i++)
for(int j = 0; j < k.size(); j++)
cvmSet(M, i, j, k[i][j]);
CvMat* E = cvCreateMat(k.size(), k.size(), CV_64FC1);
cvZero(E);
CvMat* I = cvCreateMat(k.size(), 1, CV_64FC1);
cvZero(I);
//ä»ç©éµMä¸è·åç¹å¾åéåå
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cvEigenVV(M, E, I);
vector<double> a(k.size(),0);
vector< vector<double> > eigenMat(2,a);
//åå两个æ大çç¹å¾åé
for(int i = 0; i < 2; i++)
for(int j = 0; j < k.size(); j++)
eigenMat[i][j] = cvmGet(E,i,j);
cvReleaseMat(&M);
cvReleaseMat(&E);
cvReleaseMat(&I);
return eigenMat;
}
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