The Math Behind How Digital Photo Resizing Works

When you resize (and resample) a photo in Photoshop, you’re given the option of strategies such as Nearest Neighbor and Bilinear. If you have no idea what those mean, check out this 9-minute video by Computerphile.

A Look at Photo Steganography, the Hiding of Secrets Inside Digital Images

Here's a fascinating (but very heady) video by Computerphile, which recently sat down with image analyst Dr. Mike Pound of the University of Nottingham to talk about the subject of digital image steganography.

Steganography is the practice of hiding one piece of content inside another. In this case, Pound talks about the idea of being able to kind all kinds of content inside digital photograph files.

How JPEG Handles Colors and Compression

Want to understand the math and science behind how JPEG files store your digital photographs? The YouTube channel Computerphile has a new series of videos on the JPEG. They're a bit long and heady, but you may find them interesting if you've ever wondered about the technical details behind one of the world's most popular image compression methods.