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#include <iostream>
#include <vector>
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
Mat src, img, roi;
Rect crop_rect(0,0,0,0);
vector<cv::Point> pt;
const char* win_name="crop";
void
show_img ()
{
img = src.clone();
if(crop_rect.width > 0 && crop_rect.height > 0){
roi = src(crop_rect);
cout << crop_rect.width << " " << crop_rect.height << endl;
imshow("cropped", roi);
}
//rectangle(img, crop_rect, Scalar(0,255,0), 1, 8, 0 );
imshow(win_name,img);
}
void
mouse_handler (int event, int x, int y, int f, void*)
{
switch (event)
{
case CV_EVENT_LBUTTONDOWN:
circle(src, Point(x,y), 4, 0);
pt.push_back(cv::Point(x,y));
show_img();
break;
}
if (pt.size() == 2) {
//circle(src, Point(pt[1].x, pt[0].y), 4, 0);
//circle(src, Point(pt[0].x, pt[1].y), 4, 0);
crop_rect = Rect(pt[0], pt[1]);
show_img();
}
}
int
main (int argc, char** argv)
{
namedWindow(win_name, WINDOW_NORMAL);
namedWindow("cropped", WINDOW_NORMAL);
setMouseCallback(win_name, mouse_handler, NULL);
for (size_t i=1; i<argc; i++) {
string imgn(argv[i]);
src=imread(argv[i],1);
//destroyWindow(win_name);
destroyWindow("cropped");
crop_rect.x = 0;
crop_rect.y = 0;
crop_rect.height = 0;
crop_rect.width = 0;
pt.clear();
imshow(win_name,src);
while(1){
char c=waitKey();
if(c == 's' && roi.data){
imshow(win_name, src);
roi=src(crop_rect);
imwrite(imgn+"-crop.jpg", roi);
cout << " saved " << imgn <<endl;
break;
}
if(c==27) break;
show_img();
}
}
return 0;
}
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