opencv将图片分成多个256*256像素的小图片

#include "astdio.h" #include "division.h" int main() { string imagename = "000.jpg"; cv::Mat img = cv::imread("image.jpg"); if (!img.data) { cout<<"can't open img.jpg"<<endl; return -1; } cout<<"size of original.jpg is "<<img.cols<<"*"<<img.rows; cv::Mat result; cv::resize(img,result,cv::Size(4096,2048)); cv::imwrite("result.jpg",result); vector<cv::Mat> imgDiv; imgDiv = division(result,Dst_img_width,Dst_img_height); vector<cv::Mat>::iterator it = imgDiv.begin(); while(it!=imgDiv.end()) { cv::imwrite(imagename,*it); if ((++imagename[2]) == 58) { imagename[2] = '0'; if ((++imagename[1])==58) { imagename[1] = '0'; imagename[0]++; } } it++; } }