矩陣和圖像的操作

(1)cvAbs，cvAbsdiff，cvAbsDiffS

它們的結(jié)構(gòu)為：

      void cvAbs(  //取src中元素的絕對(duì)值，寫到dst中
　　const CvArr* src,
　　const dst
);

void cvAbsDiff( //src1減去src2的差的絕對(duì)值存入dst
　　const CvArr* src1,
　　const CvArr* src2,
　　const dst
);

void cvAbsDiffs( //src中每一個(gè)元素減去value存入dst中
　　const CvArr* src,
　　CvScalar value,
　　const dst
_;
    

使用實(shí)例代碼：

      #include <cv.h>
#include <highgui.h>
#include <cxcore.h>
#include <iostream>
using namespace std;
int main( int argc, char** argv ){
	CvMat *mat;
	mat=cvCreateMat(4,4,CV_32FC1);

	float value = 0.0;
	int i = 0, j = 0;
	cout<<"初始化原始數(shù)組"<<endl;
	for ( i = 0; i < 4; i ++ ){
		for( j = 0; j < 4; j ++ ){

			value -= 1.0;
			CV_MAT_ELEM( *mat, float, i, j) = value;		
		}
	}
	for ( i = 0; i < 4; i ++ ){
		for( j = 0; j < 4; j ++ ){

			cout<<"\t"<<CV_MAT_ELEM( *mat, float, i, j);		
		}
		cout<<endl;
	}
	CvMat *matDes;

	matDes=cvCreateMat(4,4,CV_32FC1); 

	cout<<"目標(biāo)矩陣"<<endl;
	for ( i = 0; i < 4; i ++ ){
		for( j = 0; j < 4; j ++ ){
			cvmSet( matDes, i, j,0);
			cout<<"\t"<<CV_MAT_ELEM( *matDes, float, i, j);		
		}

		cout<<endl;
	}

	cvAbs( mat, matDes );
	cout<<"數(shù)組的絕對(duì)值"<<endl;
	for ( i = 0; i < 4; i ++ ){
		for( j = 0; j < 4; j ++ ){

			cout<<"\t"<<CV_MAT_ELEM( *matDes, float, i, j);		
		}

		cout<<endl;
	}

	CvMat *matDiff1 = cvCreateMat(4,4,CV_32FC1);

	cvAbsDiff( mat,matDes , matDiff1);
	cout<<"兩個(gè)差的絕對(duì)值"<<endl;
	for ( i = 0; i < 4; i ++ ){
		for( j = 0; j < 4; j ++ ){

			cout<<"\t"<<CV_MAT_ELEM( *matDiff1, float, i, j);		
		}

		cout<<endl;
	}

	CvScalar cs;
	cs.val[0] = 2.0;
	cs.val[1] = 1.0;

	cvAbsDiffS( mat, matDiff1,cs);
	cout<<"矩陣減去標(biāo)準(zhǔn)值的絕對(duì)值"<<endl;
	for ( i = 0; i < 4; i ++ ){
		for( j = 0; j < 4; j ++ ){

			cout<<"\t"<<CV_MAT_ELEM( *matDiff1, float, i, j);		
		}

		cout<<endl;
	}
	cvReleaseMat( &mat );
	cvReleaseMat( &matDes );
	getchar();
	return 0;
}
    

輸出結(jié)果：

? ?to be continued