数图实验题.docVIP

图像的旋转和缩放 #include stdio.h #include cv.h #include cxcore.h #include highgui.h #include math.h #define FILENAME lena.jpg int main() { IplImage *src,*dst,*dst2; double scale=0.5; CvSize dst_cvsize; src=cvLoadImage(FILENAME,1); // dst= cvCreateImage( cvGetSize(src), 8, 3 ); dst=cvCloneImage(src); cvFlip(src,dst,0); dst_cvsize.width=src-width*scale; dst_cvsize.height=src-height*scale; dst2=cvCreateImage(dst_cvsize,src-depth,src-nChannels); cvResize(src,dst2,CV_INTER_LINEAR); cvNamedWindow(src,1);//创建窗口 cvNamedWindow(dst,1); cvNamedWindow(dst2,1); cvShowImage(src,src);//显示图像 cvShowImage(dst,dst); cvShowImage(dst2,dst2); cvWaitKey(0);//等待按键 cvDestroyWindow(src);//销毁窗口 cvDestroyWindow(dst); cvDestroyWindow(dst2); cvReleaseImage(src); cvReleaseImage(dst); cvReleaseImage(dst2); return 0; } 图像的灰度映射和图像相加 #include cv.h #include highgui.h #define FILENAME tu2.png int ImageAdd(IplImage* src, IplImage* dst) //定义一个图像相加函数 { int x,y; double val,val1; //对图像中的像素逐个进行灰度变换 for( y = 0; y src-height; y++)//y为像素的纵坐标 { for (x = 0; x src-width; x++)//x为像素的横坐标 { val= (uchar) src-imageData [ src-widthStep*y + x]; //得到该像素点的灰度值 //val = ((uchar*)(src-imageData + src-widthStep*y))[x]; //也可 val1= (uchar) dst-imageData [ dst-widthStep*y + x]; val1=val+val1; if(val1255) val1=255; if(val10) val1=0;//保证灰度值落在有效的灰度级别内 dst-imageData[ dst-widthStep*y + x] = val1;//对像素点重新赋灰度值 //((uchar*)(dst-imageData + dst-widthStep*y))[x] = (uchar) val;//也可 } } return 0; } int ImageAdjust(IplImage* src, IplImage* dst, double low, double high, double bottom, double top) //定义一个映射函数 { if( low0 || low1 || high 0 || high1 || bottom0 || bottom1 || top0 || top1 || low=high) return -1;//输入参数值不符合函数要求，则返回失败值 //将输入参数缩放到8比特图像的灰度级别[0, 255]上 double low2 = low*255; double high2 = high*255; double bottom2 = bottom*255; double top2 = top*255; d