< MATLAB: In an assignment ... < Previous Editing an Existing Figure File... >Next > Selectively Changing an Image in MATLAB with Logical Indexing 1 Posted by Doug Hull, December 5, 2014 A MATLAB user on MATLAB Answers wanted to know how to change all the pixels in an image that were below a certain threshold. The answer was correct, but very terse. I wanted to expand upon the question with an explanation of logical indexing in MATLAB. 4 views (last 30 days) | | You are now following this blog post You will see updates in your activity feed.You may receive emails, depending on your notification preferences. Close Category: Format: Video, Level: Basic < MATLAB: In an assignment ... < Previous Editing an Existing Figure File... >Next > See Also MATLABdo: The Way of MATLAB Blogs Finding the Closest Value Less than a Threshold Blogs Thank you for using MATLAB Answers Blogs Convert Image Graphic or Data Type Constant False Alarm Rate (CFAR) Detection Canny Edge Detector File Exchange Comments To leave a comment, please click here to sign in to your MathWorks Account or create a new one.