A network-adaptive context extraction algorithm for tier 1 encoding in JPEG2000

Hyun-Jun Choi; Young-Ho Seo; Dong-Wook Kim

doi:10.1117/12.633224

24 June 2005 A network-adaptive context extraction algorithm for tier 1 encoding in JPEG2000

Hyun-Jun Choi, Young-Ho Seo, Dong-Wook Kim

Proceedings Volume 5960, Visual Communications and Image Processing 2005; 596054 (2005) https://doi.org/10.1117/12.633224
Event: Visual Communications and Image Processing 2005, 2005, Beijing, China

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.

Citation Download Citation

Hyun-Jun Choi, Young-Ho Seo, and Dong-Wook Kim "A network-adaptive context extraction algorithm for tier 1 encoding in JPEG2000", Proc. SPIE 5960, Visual Communications and Image Processing 2005, 596054 (24 June 2005); https://doi.org/10.1117/12.633224

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KEYWORDS

JPEG2000

Image processing

Image quality

Image compression

Discrete wavelet transforms

Computer programming

Image quality standards

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