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[RaiMan <question677011@xxxxxxxxxxxxxxxxxxxxx>]

Question #677011 on Sikuli changed:
https://answers.launchpad.net/sikuli/+question/677011

    Status: Open => Answered

RaiMan proposed the following answer:
I have no idea, what your problems are.

My test with the latest build 1.1.4: (transscripted to my habits)

The image to search for is seen near the top of the remote screen.

      //public Match waitForImage(VNCScreen vnc_old, String image, Region reg, double waitTimeout, float score) {
      //System.out.println("Waiting for image: " + image + " in a specific region: " + reg.getX() + ", " + reg.getY() + " " + reg.getW() + "x" + reg.getH());

      VNCScreen.startUp(0); //do not wait after start (standard would be 3 secs)
      VNCScreen vs = VNCScreen.start("192.168.2.121");

      Region reg = new Region(0, 0, 1600, 300);
      vs.setRect(reg.x, reg.y, reg.w, reg.h);

      String vimg = "vncChrome";
      Pattern pat = new Pattern(vimg);
      //pat.similar(score); //match score is > 0.99 ;-)
      Match found = null;

      try {
        found = vs.wait(pat); //standard waiting 3 secs
//        System.out.println("Match: " + found.getScore());
//        System.out.println("Found image region: " + found.x + "," + found.y + " " + found.w + "x" + found.h);
        p("found: %s", found); //my formatting print function
      } catch (FindFailed e) {
        log(-1, "not found: %s", pat); // class Debug
//        e.printStackTrace();
//        screenShot(vs, reg);
//        throw new RuntimeException("Failed to find a match for image and click it. " + image);
      }
      //vs.hover();  // printing found region coordinates
      //return found;
      //  }

The printout when using setRect():
found: M[836,3 74x88]@S(NonLocal, 1280x300) S:1,00 C:873,47 [158 msec]

the search-time will be about 1 sec with fullscreen (no setRect())

BTW: setRect() is not recommended for restricting the search region for one search.
Better is to use the class Region:

Region reg = vnc.newRegion(givenRegion); // dedicates the Region to the given VNCScreen
found = reg.wait(image);

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