opencv在一个窗口里面显示多张图片

来源：互联网发布：海拔高度查询软件下载编辑：程序博客网时间：2024/05/01 19:36

From http://blog.csdn.net/yang_xian521/article/details/7915396

void imshowMany(const std::string& _winName, const vector<Mat>& _imgs){ int nImg = (int)_imgs.size(); Mat dispImg; int size; int x, y; // w - Maximum number of images in a row  // h - Maximum number of images in a column  int w, h; // scale - How much we have to resize the image float scale; int max; if (nImg <= 0)  {  printf("Number of arguments too small....\n");  return; } else if (nImg > 12) {  printf("Number of arguments too large....\n");  return; } else if (nImg == 1) {  w = h = 1;  size = 300; } else if (nImg == 2) {  w = 2; h = 1;  size = 300; } else if (nImg == 3 || nImg == 4) {  w = 2; h = 2;  size = 300; } else if (nImg == 5 || nImg == 6) {  w = 3; h = 2;  size = 200; } else if (nImg == 7 || nImg == 8) {  w = 4; h = 2;  size = 200; } else {  w = 4; h = 3;  size = 150; } dispImg.create(Size(100 + size*w, 60 + size*h), CV_8UC3); for (int i= 0, m=20, n=20; i<nImg; i++, m+=(20+size)) {  x = _imgs[i].cols;  y = _imgs[i].rows;  max = (x > y)? x: y;  scale = (float) ( (float) max / size );  if (i%w==0 && m!=20)  {   m = 20;   n += 20+size;  }  Mat imgROI = dispImg(Rect(m, n, (int)(x/scale), (int)(y/scale)));  resize(_imgs[i], imgROI, Size((int)(x/scale), (int)(y/scale))); } namedWindow(_winName); imshow(_winName, dispImg);}void main(){ Mat img01 = imread("01.png"); Mat img02 = imread("02.png"); Mat img03 = imread("03.png"); vector<Mat> imgs; imgs.push_back(img01); imgs.push_back(img02); imgs.push_back(img03); imshowMany("Show", imgs);}

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