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Rate control of a region-based H.263 video codec under time-varying channels

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2 Author(s)
Hwangjun Song ; Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA ; Kuo, C.-C.J.

A region-based video codec based on the H.263+ standard is examined and its associated novel rate control schemes are proposed for visual communication through time-varying low-bit-rate channels. The region-based coding scheme is a hybrid method that consists of the traditional block DCT coding and the object-based coding. Basically, we adopt H.263+ as the platform, and develop a fast macroblock-based segmentation method to implement the region-based video codec. The proposed rate control solution includes rate control in three levels: encoding frame selection, frame-layer rate control and macroblock-layer rate control. The goal is to enhance the visual quality of decoded frames without obvious motion unsmoothness under time-varying channels. The efficiency of the proposed rate control schemes applied to the region-based video codec is demonstrated via several typical test sequences

Published in:
Multimedia Signal Processing, 1999 IEEE 3rd Workshop on

Date of Conference: 1999

Page(s):
339 - 344
Meeting Date :
13 Sep 1999-15 Sep 1999
Print ISBN:
0-7803-5610-1
INSPEC Accession Number:
6497338
Conference Location :
Copenhagen
Digital Object Identifier :
10.1109/MMSP.1999.793859
Product Type:
Conference Publications

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