NDLI: A low bit-rate video coding algorithm based on blocking regional wavelet transform with border processing

Content Provider	IEEE Xplore Digital Library
Author	Zhang Xudong Wang Desheng Peng Yingning
Copyright Year	1998
Description	Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Beijing, China (Zhang Xudong)
Abstract	A novel video coding scheme based on the blocking regional wavelet transform and overlapped motion compensation is researched in this paper. Several new or improved algorithms are proposed. The high-energy regions of interframe predicted difference are first detected using a hierarchical sliding-window region forming algorithm. The regional border is processed to reduce ringing-effects. Wavelet decomposition and quantization are carried out only for these regions. A quantization model based on HVS spatiality-frequency and time-frequency features is used in the coding algorithm. An improved single-pass scanned zero-tree is employed to represent quantized wavelet coefficients. This scheme reduces the bit rate by about 36%-51% or gets a distinct improvement in decoding video quality by cutting down ringing-effects at the same bit rate compared with traditional wavelet-based coding algorithms. Simulation results show acceptable image quality for CIF resolution at low bit-rate and very low bit-rate.
Starting Page	823
Ending Page	826
File Size	250451
Page Count	4
File Format	PDF
ISBN	0780343255
DOI	10.1109/ICOSP.1998.770339
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Video coding Quantization Bit rate Wavelet transforms Motion compensation Time frequency analysis Wavelet coefficients Decoding Image quality Image resolution
Content Type	Text
Resource Type	Article

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