Interactive in-painting with OpenCV for Processing

interactive_inpainting.pde

// updated for Processing 3

import gab.opencv.*;
import org.opencv.photo.Photo;
import org.opencv.imgproc.Imgproc;
import processing.opengl.PGraphics2D;

PImage src;
PGraphics2D canvas;

OpenCV opencv, mask;

int strokeSize = 30;

void setup(){
  size(50, 50, P2D);
  src = loadImage("test.png");
  opencv = new OpenCV(this, src, true);
  canvas = (PGraphics2D) createGraphics(src.width, src.height, P2D);
  mask = new OpenCV(this, canvas.width, canvas.height);
  canvas.beginDraw();
  canvas.background(0);
  canvas.endDraw();
  surface.setSize(src.width, src.height/2);
}

void draw(){
  pushMatrix();
  scale(0.5);
  image(opencv.getOutput(), 0, 0);
 
  noTint();
  image(canvas, src.width , 0);
  popMatrix();
  
  noFill();
  stroke(255,0,0);
  ellipse(mouseX, mouseY, strokeSize, strokeSize);
}

void mouseDragged(){
  canvas.beginDraw();
  canvas.fill(255);
  canvas.noStroke();
  canvas.ellipse(mouseX*2, mouseY*2, strokeSize,strokeSize);
  canvas.endDraw();
}

void mouseReleased(){
 mask.loadImage(canvas);
 Imgproc.cvtColor(opencv.getColor(), opencv.getColor(), Imgproc.COLOR_BGRA2BGR);
 Photo.inpaint(opencv.getColor(), mask.getGray(), opencv.getColor(), 5.0, Photo.INPAINT_NS);
 Imgproc.cvtColor(opencv.getColor(), opencv.getColor(), Imgproc.COLOR_BGR2BGRA);
}

void keyPressed(){
  if(key == '-'){
    strokeSize -= 5;
  }
   if(key == '='){
     strokeSize += 5;
   }
}