import gab.opencv.*;

PImage src, dst;

OpenCV opencv;

ArrayList<Contour> contours;

ArrayList<Contour> polygons;

void setup() {

src = loadImage("test.jpg");

size(1080, 360);

opencv = new OpenCV(this, src);

opencv.gray();

opencv.threshold(70);

dst = opencv.getOutput();

contours = opencv.findContours();

println("found " + contours.size() + " contours");

}

void draw() {

scale(0.5);

image(src, 0, 0);

image(dst, src.width, 0);

noFill();

strokeWeight(3);

for (Contour contour : contours) {

stroke(0, 255, 0);

contour.draw();

stroke(255, 0, 0);

beginShape();

for (PVector point : contour.getPolygonApproximation().getPoints()) {

vertex(point.x, point.y);

}

endShape();

}

}