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IDEAL
2004
Springer
14 years 4 months ago
Cosine Transform Priors for Enhanced Decoding of Compressed Images
Abstract. Image compression methods such as JPEG use quantisation of discrete cosine transform (DCT) coefficients of image blocks to produce lossy compression. During decoding, an...
Amos J. Storkey, Michael Allan
ICMCS
2006
IEEE
151views Multimedia» more  ICMCS 2006»
14 years 5 months ago
Analytical Model of Zero Quantized DCT Coefficients for Video Encoder Optimization
This paper proposes a novel analytical model to predict zero quantized DCT coefficients for fast video encoding. The dynamic range of quantized DCT coefficients are analyzed and...
Hanli Wang, Sam Kwong, Chi-Wah Kok
DATE
2006
IEEE
171views Hardware» more  DATE 2006»
14 years 5 months ago
Dynamic bit-width adaptation in DCT: image quality versus computation energy trade-off
We present a dynamic bit-width adaptation scheme in DCT applications for efficient trade-off between image quality and computation energy. Based on sensitivity differences of 64 ...
Jongsun Park, Jung Hwan Choi, Kaushik Roy
ICASSP
2009
IEEE
14 years 6 months ago
Distributions of 3D DCT coefficients for video
The three-dimensional discrete cosine transform (3D DCT) has been proposed as an alternative to motion-compensated transform coding for video content. However, so far no definiti...
Malavika Bhaskaranand, Jerry D. Gibson