How to find height of the specific point in this OCT image?

Question

I am a beginner in Matlab who is working on medical image processing of retinal OCT images. My aim is to align all the images to 1 height value. I want to find the maximum height of the layer in the eye.

For example, if input :

the output: returns this height:

I have tried this approach as outlined in Hand_height but it returns the height of the complete image.

Answer 1

Iterate over X and find the first peak (blue point) using findpeaks in the vertical direction (Y) to generate the first layer (blue line), and then determine the peak with the smallest index in the Y-direction. Please see the image!

Answer 2

In order to find maximum high you should find the top border of a retina. Here you have an example of how to find it.