Since java opencv Mat don't support 3D Mat elements,
I wonder if i calculated Histogram for R channel , Histogram for G channel and Histogram for B channel and appended all the outputs together would it be the same if i calculated 3D histogram this way
Mat histogram = new Mat();
MatOfInt histSizes = new MatOfInt(10,10,10);
MatOfFloat histRanges = new MatOfFloat(0,256,0,256,0,256);
MatOfInt channels = new MatOfInt(0,1,2);
Imgproc.calcHist(sourceImages,channels,new Mat(), histogram, histSizes, histRanges);