Memory bandwidth reduction in video coding systems through context adaptive lossless reference frame compression

2012 ◽  
Author(s):  
D. Silveira ◽  
G. Sanchez ◽  
M. Grellert ◽  
V. Possani ◽  
L. Agostini
Keyword(s):  
Video Coding ◽  
Reference Frame ◽  
Memory Bandwidth ◽  
Bandwidth Reduction ◽  
Coding Systems

Algorithm and VLSI Architecture Designs of a Lossless Embedded Compression Encoder for HD Video Coding Systems

2020 ◽  
pp. 2130004
Author(s):  
Yu-Hsuan Lee ◽  
Cheng-Hung Kuei ◽  
Yue-Zhan Kao ◽  
Shih-Song Fan Jiang
Keyword(s):  
Video Coding ◽  
Vlsi Architecture ◽  
Visual Quality ◽  
Memory Bandwidth ◽  
Coding System ◽  
Maximum Throughput ◽  
Coding Systems ◽  
Binary Coding ◽  
Embedded Compression ◽  
Hardware Efficiency

The demand for visual quality has been advanced by high display resolutions and frame rates. Nevertheless, these two issues have caused tremendous memory bandwidth in a video coding system. In this study, an efficient lossless embedded compression (EC) algorithm is proposed to save memory bandwidth, while keeping visual quality. The proposed lossless EC algorithm incorporates three core techniques: tree partition, half-pixel prediction and group-based binary coding. Tree partition classifies a [Formula: see text] block into Trunk, Branch and Leaf. With tree partition, half-pixel prediction produces individual residues for Trunk, Branch and Leaf. Group-based binary coding converts theses residues to efficient codewords. The lossless compression ratio (CR) of the proposed EC is as high as 2.24 on average, saving memory bandwidth by 55.4%. This EC algorithm is implemented using CMOS 0.18[Formula: see text][Formula: see text]m technology. The maximum throughput can reach 6.4[Formula: see text]Gpixels/s, which can accommodate [Formula: see text]@60fps. The experiment results demonstrate that this study presents better hardware efficiency of 337[Formula: see text]Gpixels/J and 83.5[Formula: see text]Kpixels/s/gate.

Efficient reference frame compression scheme for video coding systems: algorithm and VLSI design

2015 ◽  
Vol 16 (2) ◽  
pp. 391-411 ◽  
Author(s):  
Dieison Silveira ◽  
Guilherme Povala ◽  
Lívia Amaral ◽  
Bruno Zatt ◽  
Luciano Agostini ◽  
...  
Keyword(s):  
Video Coding ◽  
Reference Frame ◽  
Vlsi Design ◽  
Compression Scheme ◽  
Coding Systems

An efficient reference frame compression approach for video coding systems

2014 ◽  
Author(s):  
Guilherme Povala ◽  
Dieison Silveira ◽  
Livia Amaral ◽  
Bruno Zatt ◽  
Marcelo Porto ◽  
...  
Keyword(s):  
Video Coding ◽  
Reference Frame ◽  
Coding Systems
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