How to get Mat with a drawable input in Android using OpenCV

android, drawable, highgui, mat, opencv

Solution

This should do

Mat img = Utils.loadResource(context, refrenceimgID, Highgui.CV_LOAD_IMAGE_COLOR);
Imgproc.cvtColor(img, gryimg, Imgproc.COLOR_RGB2BGRA);

Problem

I have some image files in the drawable folder. And now, I want to convert them into opencv Mat object. I've found a function: ``` Mat img = Highgui.imread(inFile); ``` which is reading a file path to get the Mat. However, I can't get path of my images as I can only read them by using their id like R.drawable.img1. How could I achieve what I want?

Original source