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ISCAS
2003
IEEE
79views Hardware» more  ISCAS 2003»
15 years 2 months ago
Computation reduction in cascaded DCT-domain video downscaling transcoding
In this paper, we propose efficient techniques and architectures for realizing spatial-downscaling transcoders in the DCT domain. We also present methods for re-sampling motion ve...
Yuh-Ruey Lee, Chia-Wen Lin, Yen-Wen Chen
ICIP
2004
IEEE
15 years 11 months ago
Spatial scalability and compression efficiency within a flexible motion compensated 3D-DWT
We investigate the implications of the conventional "t+2D" MC 3D-DWT structure for spatial scalability, and propose a more exible "2D+t+2D" structure. An initi...
Nagita Mehrseresht, David Taubman
ISCAS
2007
IEEE
109views Hardware» more  ISCAS 2007»
15 years 3 months ago
Macroblock-level Reduced Resolution Video Coding Allowing Adaptive DCT Coefficients Selection
—Reduced Resolution Update (RRU) video coding provides a better compression performance than H.264/AVC does. It is implemented by encoding the predicted residuals after downsampl...
Qiang Hao, Xiangyang Ji, Qingming Huang, Debin Zha...
PCM
2005
Springer
131views Multimedia» more  PCM 2005»
15 years 2 months ago
A Cross-Resolution Leaky Prediction Scheme for In-Band Wavelet Video Coding with Spatial Scalability
—In most existing in-band wavelet video coding schemes, over-complete wavelet transform is used for the motion-compensated temporal filtering (MCTF) of each spatial subband. It ...
Dongdong Zhang, Jizheng Xu, Feng Wu, Wenjun Zhang,...
ICIP
2004
IEEE
15 years 11 months ago
An efficient content-adaptive MC 3D-DWT with enhanced spatial and temporal scalability
In this paper we propose a novel, adaptive method for motion compensated 3D wavelet transformation (MC 3D-DWT) of video. The proposed method overcomes problems of ghosting and non...
Nagita Mehrseresht, David Taubman