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#include "cv.h"#include "highgui.h"#include 
     
      void PrintMat(CvMat *A);//显示矩阵void GenRandn(CvMat *arr,int seed);//生成正态分布的随机矩阵void GenRand(CvMat *arr,int seed);//生成[0,1]均匀分布的随机矩阵static int cmp_func(const void * _a,const void * _b,void * userdata);//比较函数void Test_Multiply();//测试矩阵乘法void Test_cvGetRawData();//将缓存数据填入CvMat数组中void Test_DCT();//计算DCT变换void Test_Rand();//生成随机数void Test_SeqSort();//二维序列排序int main(void){    Test_Multiply();    Test_cvGetRawData();    Test_DCT();    Test_Rand();    Test_SeqSort();    return 0;}/*矩阵乘法*/void Test_Multiply(){    double a[]={1,2,3,4,                5,6,7,8,                9,10,11,12};    double b[]={1,5,9,        2,6,10,        3,7,11,        4,8,12};    double c[9];    CvMat Ma,Mb,Mc;    printf("/n=== Test Multiply ===/n");    cvInitMatHeader(&Ma,3,4,CV_64FC1,a,CV_AUTOSTEP);    cvInitMatHeader(&Mb,4,3,CV_64FC1,b,CV_AUTOSTEP);    cvInitMatHeader(&Mc,3,3,CV_64FC1,c,CV_AUTOSTEP);    cvMatMulAdd(&Ma,&Mb,0,&Mc);    PrintMat(&Ma);    PrintMat(&Mb);    PrintMat(&Mc);}void Test_cvGetRawData(){    float *data;    int step;    float a[]={ 1,2,3,4,                -5,6,7,8,                9,-10,-11,12    };    CvMat array;    CvSize size;    int x,y;    printf("/n ===Test get raw dara! ===/n");    cvInitMatHeader(&array,3,4,CV_32FC1,a,CV_AUTOSTEP);    cvGetRawData(&array,(uchar **)&data,&step,&size);//得到矩阵的信息    step/=sizeof(data[0]);    printf("/nCvMat = ");    PrintMat(&array);    printf("/nData = ");    for (y=0;y
      
       rows;i++)    {        printf("/n");        switch(CV_MAT_DEPTH(A->type))        {            case CV_32F:            case CV_64F:                for (j=0;j
       
        cols;j++)                    printf("%9.3f",(float)cvGetReal2D(A,i,j));                break;            case CV_8U:            case CV_16U:                for (j=0;j
        
         cols;j++)                    printf("%6d",(int)cvGetReal2D(A,i,j));                break;            default:                break;        }    }    printf("/n");}void Test_SeqSort(){    CvMemStorage *storage = cvCreateMemStorage(0);    CvSeq *seq=cvCreateSeq(CV_32SC2,sizeof(CvSeq),sizeof(CvPoint),storage);    int i;    printf("/n=== Test Sequence sorting! === ");    for (i=0;i<10;i++)    {        CvPoint pt;        pt.x= rand()%1000; // 得到1000以内的随机数        pt.y= rand()%1000;        cvSeqPush(seq,&pt);//添加元素到序列末尾    }    printf("/nOriginal point set:/n");    for (i=0;i
         
          total;i++)    {        CvPoint *pt =(CvPoint *)cvGetSeqElem(seq,i);        printf("(%d,%d)/n",pt->x,pt->y);    }    cvSeqSort(seq,cmp_func,0);    printf("/nAfter sorting: /n");    for (i=0;i
          
           total;i++) { CvPoint *pt =(CvPoint *)cvGetSeqElem(seq,i); printf("(%d,%d)/n",pt->x,pt->y); } cvClearSeq(seq); cvReleaseMemStorage(&storage);}static int cmp_func(const void * _a,const void * _b,void * userdata){ CvPoint *a=(CvPoint *)_a; CvPoint *b=(CvPoint *)_b; int y_diff=a->y-b->y; int x_diff=a->x-b->x; return y_diff?y_diff:x_diff;}