April 14th, 2005 by 
Multimedia Mike
This article is now maintained as a Wiki page at http://wiki.multimedia.cx/index.php?title=Quantization.
I have never quite understood what is so hard about quantization. Maybe I am missing something but it seems to be primarily a matter of division (for quantization) and multiplication (for dequantization, a.k.a. requantization).
Posted in Codec Technology, Video Codecs | 
2 Comments »
March 23rd, 2005 by Multimedia Mike
This article is now maintained as a Wiki page at http://wiki.multimedia.cx/index.php?title=Mean_Removal.
Mean removal is another one of those concepts– like differential coding— that sounds like it would be difficult to understand. It’s not.
Posted in Codec Technology, Video Codecs | Comments Off on Video Coding Concepts: Mean Removal
March 20th, 2005 by Multimedia Mike
This article is now expanded and maintained at http://wiki.multimedia.cx/index.php?title=Differential_Coding.
Differential coding explained:
1 + 1 = 2
Got that?
Posted in Codec Technology, Video Codecs | 1 Comment »
March 20th, 2005 by Multimedia Mike
This page is maintained in Wiki format at http://wiki.multimedia.cx/index.php?title=Run_Length_Encoding
I may as well start this series of articles off with what is perhaps the simplest multimedia compression technique of them all: run length encoding (RLE). The basic idea behind this concept is to encode information about runs of identical numbers rather than encode the numbers themselves.
Posted in Codec Technology, Video Codecs | Comments Off on Video Coding Concepts: Run Length Encoding
