This is the part of code which is not working good. I know this question has been asked earlier, but i have done everything i could do but still couldn't figure out the reason. This is the portion of code
Mat imgSource = original_image.clone();
// apply gaussian blur to smoothen lines of dots
Log.i(TAG, "Blur");
Imgproc.GaussianBlur(imgSource, imgSource, new Size(5, 5), 5);
// convert the image to black and white
Log.i(TAG, "B&W");
Log.i(TAG,Integer.toString(imgSource.type()));
Log.i(TAG,Integer.toString(imgSource.channels()));
Mat gray = new Mat(imgSource.size(),CvType.CV_8UC1);
Imgproc.cvtColor(imgSource, gray, Imgproc.COLOR_BGR2GRAY);
// convert the image to black and white does (8 bit)
Log.i(TAG, "Canny");
Imgproc.Canny(gray, gray, 50, 50);
// find the contours
List contours = new ArrayList();
Log.i(TAG, "Contours");
Imgproc.findContours(gray, contours, new Mat(), Imgproc.RETR_LIST,
Imgproc.CHAIN_APPROX_SIMPLE);
Log.i(TAG,"Contours done");
//if no contours are detected
if(contours.size() == 0){
Log.i(TAG,"contour size is 0");
return gray;
}
In my Logcat i see the message "contour size is 0".
When i load the gray mat, i see a coloured image which explains why their were no contours detected.
Please suggest something.
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