Image codec related knowledge 1

1. Image compression is divided into lossy compression and lossless compression: Lossless compression is not to destroy the image information, or all the image information can be restored by a certain algorithm compression, lossless compression can not reduce the memory footprint of the image, if you want to reduce the image consumption of memory capacity, it is necessary to use lossy compression. lossy compression

2. Common image format:

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2) GIF is a graphic Interchange Format (Graphics Interchange Format), characterized by high compression ratio, low disk footprint, static standard gif87a, and dynamic standard gif89a.

3) JPEG is the abbreviation for the joint Image Expert Group (Joint Photo Graphic Experts Group).

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3. What is the video encoding rate?

A simple understanding of 800kbps means that the video screen consumes 100KByte of disk space per second, which does not include the space that sounds and file systems may consume.

4. What is a frame number?

5. Commonly used video coding standards?

mpeg-x,h.26x,

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Image codec related knowledge 1