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Image compression

Storing a pixel array in a well-chosen basis so that discarding the small coordinates shrinks a photograph with little visible loss.

Understanding Linear Algebra, Image compression

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1 exercise

Exercise 2

There are several steps to the JPEG compression algorithm. The following questions examine the motivation behind some of them.

What is the overall goal of the JPEG compression algorithm?
Why do we convert colors from the the $RGB$ color model to the $YC_bC_r$ model?
Why do we decompose the image into a collection of $8\times8$ arrays of pixels?
What role does the Discrete Fourier Transform play in the JPEG compression alg…

Adapted from Understanding Linear Algebra © 2023 David Austin. Licensed under CC BY 4.0. Source: Understanding Linear Algebra. Imported at revision 3e6dced.