Efficient Block Size Decision Algorithm for Intra Mode Decision in H.264/AVC Encoder

2009 ◽  
Author(s):  
K. Bharanitharan ◽  
An-Chao Tsai
Keyword(s):  
Block Size ◽  
Mode Decision ◽  
Decision Algorithm ◽  
Intra Mode Decision

Fast Intra Mode Decision Algorithm Based on Mode Correlation in SVC

2013 ◽  
Vol 373-375 ◽  
pp. 525-529
Author(s):  
Luna Jing ◽  
Ning Li ◽  
Li Ni Ma
Keyword(s):  
Video Coding ◽  
Scalable Video Coding ◽  
Mode Decision ◽  
Base Layer ◽  
Scalable Video ◽  
Enhancement Layer ◽  
Decision Algorithm ◽  
Intra Mode Decision ◽  
Rate Loss ◽  
Fast Intra Mode Decision

Intra4×4 mode decision has correlation between enhancement layer and base layer in scalable video coding (SVC). In this paper, a new intra mode decision algorithm is proposed based on this correlation and the proximity of prediction directions of nine Intra4×4 prediction modes. This method is used in enhancement layer to decrease the mode numbers in enhancement layer. Experiments show that the proposed algorithm can save 27.52% encoding time on average with negligible PSNR change and small bit-rate loss.

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