Tonatiuh Morales's profile - activity

Maybe you can try with Gaussian Diff (Java code):

Mat g0 = src.clone();
Mat g1 = src.clone();

Imgproc.GaussianBlur(g0, g0, new Size(21, 21), 0);
Imgproc.GaussianBlur(g1, g1, new Size(3, 3), 0); 
Core.subtract(g0, g1, nombreMat); // or absdiff
Core.normalize(nombreMat, nombreMat, 0, 255, Core.NORM_MINMAX);
// Invert 8UC
Mat white = new Mat(nombreMat.size(), CvType.CV_8UC1);
white.setTo(new Scalar(255));
Core.subtract(white, nombreMat, nombreMat);