核心函数：cvLaplace

相当于x方向的二阶导数加上y方向的二阶导数

程序：

代码：

#include "cv.h"#include "cxcore.h"#include "highgui.h"#include 
     
      int laplace(int argc,char** argv){IplImage* src1=cvLoadImage("e:\\picture\\7.jpg",0);IplImage* src2=cvLoadImage("e:\\picture\\8.jpg",0);IplImage* dst1=cvCreateImage(cvGetSize(src1),IPL_DEPTH_16S,src1->nChannels);  //注意类型是IPL_DEPTH_16SIplImage* dst2=cvCreateImage(cvGetSize(src2),IPL_DEPTH_16S,src1->nChannels);IplImage* result1=cvCreateImage(cvGetSize(src2),8,src1->nChannels);IplImage* result2=cvCreateImage(cvGetSize(src2),8,src1->nChannels);cvZero(dst1);cvZero(dst2);cvZero(result1);cvZero(result2);cvLaplace(src1,dst1);       //相当于x方向的二阶导数加上y方向的二阶导数cvLaplace(src2,dst2);cvConvertScale(dst1,result1);cvConvertScale(dst2,result2);cvNamedWindow("src1");cvNamedWindow("src2");cvNamedWindow("dst1");cvNamedWindow("dst2");cvShowImage("src1",src1);cvShowImage("src2",src2);cvShowImage("dst1",result1);cvShowImage("dst2",result2);cvWaitKey(0);cvDestroyWindow("src1");cvDestroyWindow("src2");cvDestroyWindow("dst1");cvDestroyWindow("dst2");cvReleaseImage(&src1);cvReleaseImage(&src2);cvReleaseImage(&dst1);cvReleaseImage(&dst2);cvReleaseImage(&result1);cvReleaseImage(&result2);return 0;}