Finding coordinates From image

hello. I'm working on eye detection and I wanna know how can I find coordinates of a picture automatically? Can anyone help me?

[KSSV]

Attach your image and tell your expectatons.

[Zainab Afreen]

Task 1:

1.First crop the region of interest i.e. left and right eye seperatly.

2. Then find coordinates (x,y) for each glint. you can use image processing techniques to detect four glints. like RANSAC, image thresholding, etc.

[Zainab Afreen]

Answer 1

[KALYAN ACHARJYA]

You have do little effort to localize the eye section in the image. You may use imfindcircles function (Read about CHT Image Processing)

[centers,radii, metric] = imfindcircles(grayImage,[r_min,r_max],'Sensitivity',sense_val);

Try with possible pixels radii values to localize eye on face image (Probable Values, may be r_min=60 or r_max=100), control the sensitivity for circular object detection (Val 0 to 1), try with sense_val 0.96 or near in your case.

Once the circular object detected, draw circles on it by considering its evalueted centers and radii values

viscircles(centers, radii,'EdgeColor','b');

There are many literatures avalible in public domain related to eye detection (Human face)

Try for other tasks yourself, any specific question you can ask in this forum.

[Zainab Afreen]

Thank you so Much for this kindness.