Title :
A study on fast rate-distortion optimized coding mode decision for H.264
Author :
Tanizawa, Akiyiuki ; Koto, Shin-Ichiro ; Chujoh, Takahi ; Kikuchi, Yoshihiro
Author_Institution :
Multimedia Lab., Toshiba Corp., Kawasaki, Japan
Abstract :
The H.264 video coding standard can achieve considerably higher coding efficiency than any other existing standards by deciding the best mode among many prediction modes and various sixes of prediction blocks. Although the coding efficiency is improved by using Lagrange optimization for the mode decision, computational complexity increases significantly at the encoder. In this paper, we propose the fast rate-distortion optimization method for the hierarchical and adaptive coding mode decision in order to reduce the number of candidates for the best coding mode.
Keywords :
adaptive codes; code standards; computational complexity; data compression; optimisation; rate distortion theory; video coding; H.264 video coding standard; Lagrange optimization; adaptive coding mode decision; computational complexity; fast rate-distortion optimization; Costs; Laboratories; Lagrangian functions; Optimization methods; Quadratic programming; Quantization; Rate-distortion; Standards development; Telecommunication standards; Video coding;
Conference_Titel :
Image Processing, 2004. ICIP '04. 2004 International Conference on
Print_ISBN :
0-7803-8554-3
DOI :
10.1109/ICIP.2004.1419417
