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Advanced Python Programming
book

Advanced Python Programming

by Dr. Gabriele Lanaro, Quan Nguyen, Sakis Kasampalis
February 2019
Intermediate to advanced content levelIntermediate to advanced
672 pages
16h 50m
English
Packt Publishing
Content preview from Advanced Python Programming

Thresholding

Another important technique in image processing is thresholding. With the goal of categorizing each pixel in a digital image into different groups (also known as image segmentation), thresholding provides a quick and intuitive way to create binary images (with just black and white pixels).

The idea behind thresholding is to replace each pixel in an image with a white pixel if the pixel's intensity is greater than a previously specified threshold, and with a black pixel if the pixel's intensity is less than that threshold. Similar to the goal of grayscaling, thresholding amplifies the differences between high- and low-intensity pixels, and from that important features and patterns in an image can be recognized and extracted.

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Publisher Resources

ISBN: 9781838551216Supplemental Content