2016-02-15 11:06:24 -0500 commented question Finger count and convexity defects providing wrong value @FooBar, MODELConvexityDefects is a custom getter and setter class. 2016-02-15 11:05:41 -0500 commented question Finger count and convexity defects providing wrong value Oh no I'm using 2.4.11 @LBerger 2016-02-15 10:35:20 -0500 asked a question Finger count and convexity defects providing wrong value I have retrieved convexity defects and after referring to some questions asked here, I figured out that Convexity defect contains data in 4s, i.e., [startIndex, endIndex, farthestPoint, depth]. So I retrieved the all these values and drew circles at the points (except depth). Following is the code which I used to do that.  for (int j = 0; j < convexDefect.toList().size(); j = j+4) { if(farPoint.y < a){ MODELConvexityDefects convexityDefects = new MODELConvexityDefects(); convexityDefects.setStartIndex(contours.get(boundPos).toList() .get(convexDefect.toList().get(j))); convexityDefects.setEndIndex(contours.get(boundPos).toList() .get(convexDefect.toList().get(j+1))); convexityDefects.setFarthestPoint(contours.get(boundPos).toList() .get(convexDefect.toList().get(j+2))); convexityData.add(convexityDefects); } } // Draws all the points from defect data MODELConvexityDefects convexityDefects; for (int i = 0; i < convexityData.size(); i++) { convexityDefects = new MODELConvexityDefects(); convexityDefects = convexityData.get(i); // Green Core.circle(modifiedFrame, convexityDefects.getStartIndex(), 6, new Scalar(0,154,0)); // Orange Core.circle(modifiedFrame, convexityDefects.getEndIndex(), 6, new Scalar(0,154,246)); // Red Core.circle(modifiedFrame, convexityDefects.getFarthestPoint(), 6, new Scalar(0,0,255)); }  The output I got is not really desirable one. Please tell me what am I doing wrong here. If you notice I'm not able to get the farthest point correctly and the thumb is completely neglected. 2016-02-04 12:09:54 -0500 received badge ● Enthusiast 2016-01-21 08:53:50 -0500 commented answer opencv-2.4.4 in java.library.path error This really did solve my problem, probably something we wouldn't really notice. Good catch 2016-01-21 08:44:21 -0500 received badge ● Supporter (source)