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Hi , when i try to run the following code :
import gab.opencv.*;
import java.awt.*;
import processing.video.*;
Capture cam;
OpenCV opencv;
void setup() {
size(640, 480);
String[] cameras = Capture.list();
cam = new Capture(this, cameras[0]);
opencv = new OpenCV(this, 640/2, 480/2);
opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);
cam.start();
}
void draw() {
scale(2);
opencv.loadImage(cam);
image(cam, 0 , 0 );
noFill();
stroke(0, 255, 0);
strokeWeight(3);
Rectangle[] faces = opencv.detect();
println(faces.length);
for (int i = 0; i < faces.length; i++) {
println(faces[i].x + "," + faces[i].y);
rect(faces[i].x, faces[i].y, faces[i].width, faces[i].height);
}
}
void captureEvent(Capture c) {
c.read();
}
I get the following error :
illegalargumentexception width(0) and height(0) cannot be <=0
How do i solve this error?
Answers
Quick guess: you're trying to read a frame before the camera is available. If you use
available()
does that help?Note that your subject is contradicted by the error message at the end of your message.