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Proceedings Paper

A network-adaptive context extraction algorithm for tier 1 encoding in JPEG2000
Author(s): Hyun-Jun Choi; Young-Ho Seo; Dong-Wook Kim
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Paper Abstract

JPEG2000 was established as an international standard for still image compression by ISO/IEC/ITU-T. This paper proposed a method to perform network adaptive context extraction with high speed, which takes the largest portion in calculation of EBCOT. This algorithm is to extract the context for coefficients whose value is more than or equal to a transfer factor about the network environment. The speed and network-adaptive power is up at the cost of degrading the image quality about transfer factor. The transfer factor was from 20 to 1 with the image quality of between 50dB and 30dB, at which from 20% to 60% of the amount of calculation and data was reduced. Since the degradation in image quality can be adjusted by the transmission factor, the proposed method is expected to be used effectively in conjunction with the progressive transmission methods according to the image quality. Also by implementing hardware IP, it is expected to be able to be used in designing a JPEG2000 system.

Paper Details

Date Published: 24 June 2005
PDF: 11 pages
Proc. SPIE 5960, Visual Communications and Image Processing 2005, 596054 (24 June 2005); doi: 10.1117/12.633224
Show Author Affiliations
Hyun-Jun Choi, Kwangwoon Univ. (South Korea)
Young-Ho Seo, Yuhan College (South Korea)
Dong-Wook Kim, Kwangwoon Univ. (South Korea)


Published in SPIE Proceedings Vol. 5960:
Visual Communications and Image Processing 2005

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