#Minimalistic pupil size detection The is an simple image processing program with the objective of detecting the size of the pupil.

Citation:​ L. Vázquez Romaguera et al (2015) Pupil Segmentation Approach on Low Resolution Images DOI: 10.1007/978-3-319-13117-7_110

The algorithm is:

1. input
2. selecting the channel in rgb
3. histogram equalization
4. thresholding
5. Morphological closing operation
6. Morphological opening operation
7. Find the largest object of connect components8) Draw a rectangle around the largest object
8. determine the pupil size by calculating the average of the sides of the rectangle

Disadvantages:

1. it will not give accurate results unless you provide an image of an well lit eye
2. since it finds the largest component after thresholding, there must not be a dark and big component other than the pupil.