1) coInvert.Mouse_drawing(src);
2) static void on_draw(int event,int x,int y,int flags,void *userdata)
{
Mat image = *((Mat*)userdata);
if (event == EVENT_LBUTTONDOWN)
{
sp.x = x;
sp.y = y;
cout << "start point:" << sp << endl;
}
else if (event == EVENT_LBUTTONUP) {
ep.x = x;
ep.y = y;
int dx = ep.x - sp.x;
int dy = ep.y - sp.y;
if (dx > 0 && dy > 0) {
Rect box(sp.x, sp.y, dx, dy);
rectangle(image, box, Scalar(0, 0, 255), 2, 8, 0);
imshow("鼠标绘制", image);
imshow("ROI区域", image(box));
sp.x = -1;
sp.y = -1;
}
}
else if (event == EVENT_MOUSEMOVE)
{
if (sp.x > 0 && sp.y > 0)
{
ep.x = x;
ep.y = y;
int dx = ep.x - sp.x;
int dy = ep.y - sp.y;
if (dx > 0 && dy > 0) {
Rect box(sp.x, sp.y, dx, dy);
temp.copyTo(image);
rectangle(image, box, Scalar(0, 0, 255), 2, 8, 0);
imshow("鼠标绘制", image);
}
}
}
}
void ColorInvert::Mouse_drawing(Mat& image) {
namedWindow("鼠标绘制", WINDOW_AUTOSIZE);
setMouseCallback("鼠标绘制", on_draw,(void*)(&image));
imshow("鼠标绘制", image);
temp = image.clone();
}