How to separate darkest and brightest pixel in an image with a threshold value

Hi all..i just want to separate dark and bright pixels from an image with a fixed threshold value 0.5.can any one suggest me how to do this..Thanks in advance....

[Adam Danz]

Sounds like you're dealing with a grayscale image. After you read it in you should have a matrix of values between 0 and 1. Use logical operators to determine which values are above/below threshold.

https://www.mathworks.com/help/matlab/logical-operations.html

Answer 1

[Image Analyst]

What does "separate" mean to you?

You can create a binary image (mask) for dark pixels like this

darkPixels = grayImage < 0.5;
brightPixels = grayImage >= 0.5; % or brightPixels = ~darkPixels

Make sure you run through my Image Segmentation Tutorial.