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ISCAS
1999
IEEE
118views Hardware» more  ISCAS 1999»
13 years 10 months ago
Critical quantization decisions in transform coding and blocking artifacts
Seyfullah H. Oguz, Truong Q. Nguyen, Yen Hen Hu
ICIP
2008
IEEE
14 years 7 months ago
A perceptual metric for blind measurement of blocking artifacts with applications in transform-block-based image and video codin
In this paper, we analyze the formation of blocking artifacts as a result of quantization of the discrete cosine transform (DCT) coefficients. These artifacts are known to be the ...
Koohyar Minoo, Truong Q. Nguyen
ICIP
1997
IEEE
14 years 7 months ago
A New Approach for Restoring Block-Transform Coded Images with Estimation of Correlation Matrices
This paper presents a new restoration approach to reduce coding artifacts in block-transform image coding. Di erent from conventional restoration techniques, the proposed one is n...
Steven Sheung-On Choy, Yuk-Hee Chan, Wan-Chi Siu
TIP
2010
144views more  TIP 2010»
13 years 23 days ago
Direction-Adaptive Partitioned Block Transform for Color Image Coding
- In this report, we investigate the application of Direction Adaptive-Partitioned Block Transform (DA-PBT) to color images and propose a basic framework for DA-PBT Color Image Cod...
Chuo-Ling Chang, Mina Makar, Sam S. Tsai, Bernd Gi...
ISM
2008
IEEE
161views Multimedia» more  ISM 2008»
14 years 14 days ago
Deblocking of Block-Transform Compressed Images Using Phase-Adaptive Shifted Thresholding
Many popular image compression schemes are based on block-transform coding, a technique where images are broken into small blocks of pixels prior to transformation and compression...
Alexander Wong, William Bishop