›› 2010, Vol. 23 ›› Issue (9): 83-.

• Articles • Previous Articles     Next Articles

Adaptive Rate Control Algorithm Based on Rate Pre-allocation

 WANG Sheng-Li, WANG Jiao, XU Lei   

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

Abstract:

An algorithm for rate pre-allocation is proposed based on the research on image entropy.Based on a prediction module,an entropy estimate of effective bit-plane is made,and the sum of entropy estimates controls the rate pre-allocation.By pre-allocated rate,MQ controls coding depth and rate-distortion optimal interception.The proposed algorithm can reduce the MQ coding time significantly,which helps hardware implementation.

Key words: JPEG2000;entropy estimation;rate control

CLC Number: 

  • TN919.8