June 2017
Beginner to intermediate
432 pages
12h 25m
English
Content preview from Digital Signal Processing 101, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 24
DCT, Entropy, Predictive Coding, and Quantization
Abstract
In this chapter, we will discuss some of the basic concepts used in data compression, including video and image compression. Up until now, we have considered only uncompressed video formats, such as RGB or YCrCb, where each pixel is individually represented (although this is not strictly true for 4:2:2 or 4:2:0 forms of YCrCb). However, much greater levels of compression are possible with little loss of video quality. Reducing the data needed to represent an individual image or a sequence of video frames is very important when considering how much storage is needed on a camera flash chip or computer hard disk, or the bandwidth needed to transport cable or satellite television, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.