›› 2010, Vol. 23 ›› Issue (9): 77-.

• Articles • Previous Articles     Next Articles

Adaptive Rate Control Algorithm Based on FBRM

 XU Lei, WANG Sheng-Li, XIE Hui, WANG Li-Li   

  1. (Institute of Pattern Recognition and Intelligence Control,Xidian University,Xi'an 710071,China)
  • Online:2010-09-15 Published:2011-03-11

Abstract:

The paper presents an adaptive rate control algorithm based on the rate feeding back MQ in view of the fact that MQ of the EBCOT takes lots of time and resources.The wavelet subband has a specialty of adaptively choosing Coding Pass to enter MQ,and the feedback control that enters the stream of Coding Pass does not enter MQ coding pass,based on which,cut-off points are located and the pieces of coding pass with no contribution to final code are abandoned.This done,the whole coding efficiency of EBCOT is increased.The algorithm makes no effect on the quality of image compression,but significantly increases the coding efficiency of the whole EBCOT.Experiment indicates that the algorithm can reduce the amount of calculation and storage of MQ in EBCOT,easy to be implemented in hardware.

Key words: JPEG2000;EBCOT;MQ arithmetic coding;rate control

CLC Number: 

  • TN919.8