ATIS Telecom Glossary
Sunday, September 21, 2014

A B C D E F G H I
J K L M N O P Q R
S T U V W X Y Z  
Go
 
Glossary Home
Foreword
Introduction
Normative References
Using the ATIS Telecom Glossary
Annex A: Informative References
 
 
 
<< Back
quasi-lossless compression
In video and multimedia applications, the bit-rate reduction of an image signal, by an algorithm that recognizes the high degree of correlation ascertainable in specific images. Note 1: The final image does not replicate the original when viewed in direct comparison, but the losses are designed to be unrecognizable under the intended display conditions. Note 2: The algorithm may often apply transform coding, predictive techniques, and other modeling to the image signal, along with some form of entropy encoding. Note 3: While the image appears unaltered to normal human vision, it may show losses and artifacts when analyzed by other systems (i.e., chroma key, computerized image analysis, etc.). [After SMPTE] Note 4: The lost information cannot be extracted from the compressed bit stream.

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
For more information on the work related to these definitions,
please visit the ATIS website and the ATIS Document Center