Filter (video) explained
A video filter is a software component that performs some operation on a multimedia stream.[1] Multiple filters can be used in a chain, known as a filter graph, in which each filter receives input from its upstream filter, processes the input and outputs the processed video to its downstream filter.__TOC__
With regards to video encoding three categories of filters can be distinguished:
- prefilters: used before encoding
- intrafilters: used while encoding (and are thus an integral part of a video codec)
- postfilters: used after decoding
Prefilters
Common prefilters include:
Intrafilters
Common intrafilters include:
Postfilters
Common postfilters include:
See also
References
- Bovik, Al (ed.). Handbook of Image and Video Processing. San Diego: Academic Press, 2000. .
- Wang, Yao, Jörn Ostermann, and Ya-Qin Zhang. Video Processing and Communications. Signal Processing Series. Upper Saddle River, N.J.: Prentice Hall, 2002. .
Notes and References
- Web site: Introduction to DirectShow Application Programming . September 14, 2017.