how can I detect optic disc from retinal image using opencv-python

Question

I'm working on detect optic disc from retinal images, by using OpenCV-python

I processed image with these procedures.

1) resize the image. (original size is more than 2000 x 2000)

2) convert to grayscale

3) edge detection with canny.

4) apply gaussianblur.

and the result is this processed_image

I don't know how to detect optic disc with this result.

How can I detect optic disc with this?

or Am I approached the wrong direction?

Answer 1

You can try blob detection using opencv. there is a function in opencv called HoughCircles()