Structure and coding characteristics of adaptive gain/shape vector quantizer for low bit-rate motion picture coding

1991 ◽  
Vol 74 (6) ◽  
pp. 1-12
Author(s):  
Hiroshi Watanabe ◽  
Yutaka Suzuki
Keyword(s):  
Motion Picture ◽  
Bit Rate ◽  
Picture Coding ◽  
Low Bit Rate ◽  
Vector Quantizer ◽  
Shape Vector

Video sequence quantizer for very low bit-rate moving picture coding

1994 ◽  
Author(s):  
Akio Yamada ◽  
Mutsumi Ohta ◽  
Takao Nishitani
Keyword(s):  
Video Sequence ◽  
Bit Rate ◽  
Picture Coding ◽  
Low Bit Rate

Single Chip Implementation of Encoder-Decoder for Low Bit Rate Visual Communication

1997 ◽  
Vol 07 (05) ◽  
pp. 441-457
Author(s):  
Koji Miyanohana ◽  
Gen Fujita ◽  
Kazuhiro Yanagida ◽  
Takao Onoye ◽  
Isao Shirakawa
Keyword(s):  
Edge Detection ◽  
Visual Communication ◽  
Cmos Technology ◽  
Main Theme ◽  
Bit Rate ◽  
Single Chip ◽  
Low Bit Rate ◽  
Vector Quantizer ◽  
Block Level ◽  
Element Array

A single chip encoder-decoder dedicated to low bit rate visual communication is proposed, with the main theme focused on the object extraction and vector quantization. New schemes are introduced into an edge detector so as to extract objects by means of the block-level edge detection in conjunction with the pel-level edge detection and into a PE (Processing Element) array so as to be shared by the vector quantizer and the motion estimator. Owing to sophisticated architectures, these CODEC facilities have been implemented in 72.24 mm2 by a 0.6 μm triple-metal CMOS technology, which can enable the visual communication of QCIF (176 × 144) 10 fps pictures at a bit rate of 32 Kbps or less. The designed encoder-decoder operates at 10 MHz, and dissipates 147 mW from a single 3.3 V supply.

Efficient Frame Error Concealment Using Bilateral Motion Estimation for Low Bit-Rate Video Transmission

2009 ◽  
Vol E92-B (2) ◽  
pp. 461-472
Author(s):  
DinhTrieu DUONG ◽  
Min-Cheol HWANG ◽  
Byeong-Doo CHOI ◽  
Jun-Hyung KIM ◽  
Sung-Jea KO
Keyword(s):  
Motion Estimation ◽  
Video Transmission ◽  
Error Concealment ◽  
Bit Rate ◽  
Low Bit Rate
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