NDLI: Efficient shape-adaptive zero tree coding scheme and its FPGA implementation for DWT based progressive coding

Content Provider	IEEE Xplore Digital Library
Author	Yin-Tsung Hwang Sung-Bo Chen Shi-Shen Wang
Copyright Year	2003
Description	Author affiliation: Dept. of Electron. Eng., Nat. Yunlin Univ. of Sci. & Technol., Taiwan (Yin-Tsung Hwang; Sung-Bo Chen; Shi-Shen Wang)
Abstract	Shape adaptive processing is essential in an object based video codec system (e.g. MPEG-4) to reduce the computing complexity. An efficient shape-adaptive zero tree coding scheme and its hardware realization are presented for real time still texture coding using DWT. The wavelet coefficients obtained from a shape adaptive DWT core are passed onto the proposed design for progressive coding. We adopt the approach of zero tree coding but take advantage of the shape mask information to eliminate totally the coding overheads of pixels outside the video object. The proposed coding scheme features both shape adaptive and progressive coding. Simulation results indicate that under given bit rates, a 4dB PSNR performance edge over the SPIHT algorithm can be obtained. The corresponding hardwired design is next derived while the counterpart for the SPIHT algorithm has been considered as too complicated to be realized in hardware. The FPGA implementation results show that the logic gate count is less than 10K and a sustained processing rate of 20 1024/spl times/1024 sized frames/sec can be obtained.
Sponsorship	IEEE Signal Processing Soc. IEEE Circuits & Syst. Soc
Starting Page	357
Ending Page	362
File Size	464951
Page Count	6
File Format	PDF
ISBN	0780377958
ISSN	15206130
DOI	10.1109/SIPS.2003.1235696
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-08-27
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Field programmable gate arrays Discrete wavelet transforms Shape Hardware Video codecs MPEG 4 Standard Wavelet coefficients Bit rate PSNR Algorithm design and analysis
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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