Opencv _ copy one or more ROI image regions

During image processing, we often need to process one or more areas of interest in the image. In opencv, we can easily obtain sub-images in the specified ROI Area. The following code demonstrates how to obtain a single ROI or multiple ROI image regions.

// Copy one or more ROI image regions // Author: www.icvpr.com // blog: http://blog.csdn.net/icvpr # include <iostream> # include <vector> # include <opencv2/opencv. HPP> int main () {CV: mat srcimage = CV: imread (".. /test.jpg "); // save an ROI image region CV: mat roiimage; CV: rect (100,100,100,100); srcimage (rect ). copyto (roiimage); CV: imshow ("ROI", roiimage); CV: imwrite ("roi.jpg", roiimage); CV: waitkey (0 ); // save multiple ROI image regions STD: vector <CV: rect> rects; For (size_t I = 0; I <4; I ++) {rects. push_back (CV: rect (I * 10, I * 10, 50, 50);} STD: vector <CV: mat> subimages; for (INT I = 0; I <rects. size (); I ++) {CV: mat tempimg; srcimage (rects [I]). copyto (tempimg); subimages. push_back (tempimg); CV: imwrite ("roi.jpg", subimages [I]); CV: imshow ("subimage", subimages [I]); CV :: waitkey (0);} return 0 ;}

Source image

Single ROI image region

Multiple ROI image regions

Related content: www.icvpr.com

-------------------------------------------------------
<Reprint Please note: http://blog.csdn.net/icvpr>