Count image pixels greater than threshold in matlab?

To count the number of image pixels greater than a specified threshold in MATLAB, you can use logical indexing. First, convert the image to grayscale if it's not already, and then apply the threshold. For example:

<code class="language-matlab">threshold = 100; % specify your threshold
img = imread('image.png'); % load your image grayImg = rgb2gray(img); % convert to grayscale if it's a color image count = sum(grayImg(:) > threshold); % count pixels greater than threshold
</code>

This code will give you the total count of pixels that exceed the threshold value.