canvas.addLabel(Relative.to(thumb).topLeft().above(20).getScreenLocation(), "ImageTarget:");
canvas.addImage(Relative.to(thumb).topLeft().above(25).right(85).getScreenLocation(), ImageIO.read(Images.ThumbIcon));
canvas.display(3);
Target target = new ImageTarget(Images.UncheckedCheckbox);
List<ScreenRegion> checkboxes = s.findAll(target);
canvas.clear();
int no = 1;
for (ScreenRegion r : checkboxes){
String labelText = String.format("(%d):%1.3f", no, r.getScore());