很久没更新blog里,看到OpenCV官网作的愈来愈好,内心也是很高兴的,真有些冲动未来加入到这个组织里作些事。估计2.4.3要在国庆左右跟你们见面,让咱们多期待一下吧。算法
闲话少说,今天不介绍复杂的算法了,来个简单的,你们写文章作图常常用Matlab,在Matlab里常常在一个窗口里打开多幅图片。遗憾的是OpenCV没有集成这样的功能,但这难不倒你们,让我试试用ROI来解决这个问题。.net
没啥好讲的,上代码好了:code
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); }
附上效果图一张:blog
工程的下载连接为http://download.csdn.net/detail/yang_xian521/4531610图片