Hi. I'm trying to get information, when contours touch some "object" on screen. For exasmple:
On screen I paint rect. Now I want to touch it, and get information "finger is touching rect". Is it possible?
Regards
You can do something like this:
// List<MatOfPoint> contours; from findCountours
for(int i = 0; i<contours.size(); i++) {
MatOfPoint m = contours.get(i);
List<Point> list = m.toList();
for(int j = 0; j<list.size(); j++) {
Point p = list.get(j);
if(p.x == 500){
}
}
}
Thanks for quickly response. I wanted to explain my problem in a simple way, but now i see that I used bad example. So I will try one more time.
Question: how can I check if points from contoursPoints list "touch" the line that I had created?
Eitd: I'm trying conwert MatOfPoint to Point and then check x position, but always some of that points got x=1, y=1 :(
That is more clear, I do not know why you didn't ask that way in the first place :p
I have tried your algoritm (before your answer), but even I got contours on the right part of the screen, some points have x =1 and y=1. Becouse of that this algoritm don't work very good, epecially, if I want to compare points with two or more separated lines.
Asked: 2014-03-01 17:40:34 -0600
Seen: 1,193 times
Last updated: Mar 02 '14
