opencv-ex3-2.rar_opencv 显示_图像 读入 显示_图像反转_显示图像_读入图像

/* 程序名：invImage.c 功能：读入图像文件，做图像反转，然后显示图像在屏幕上 */ #include <stdlib.h> #include <stdio.h> #include <math.h> #include <cv.h> #include <highgui.h> int main(int argc, char *argv[]) { IplImage* img = 0; int height,width,step,channels; uchar *data; int i,j,k; if(argc<2) { printf("Usage: main <image-file-name>\n\7"); exit(0); } // 载入图像 img=cvLoadImage(argv[1],-1); if(!img) { printf("Could not load image file: %s\n",argv[1]); exit(0); } // 获取图像信息 height = img->height; width = img->width; step = img->widthStep; channels = img->nChannels; data = (uchar *)img->imageData; printf("Processing a %dx%d image with %d channels\n",height,width,channels); // 创建窗口 cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE); cvMoveWindow("mainWin", 100, 100); // 反转图像 for(i=0;i<height;i++) for(j=0;j<width;j++) for(k=0;k<channels;k++) data[i*step+j*channels+k]=255-data[i*step+j*channels+k]; // 显示图像 cvShowImage("mainWin", img ); cvWaitKey(0); cvReleaseImage(&img ); return 0; }