A frame-layer bit allocation for H.263

In typical block-based video coding, the rate-control scheme allocates a target number of bits to each frame of a video sequence and selects the block quantization parameters to meet the frame targets. In this work, we present a new technique for assigning such targets. This method has been adopted...

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Bibliographic Details
Published inIEEE transactions on circuits and systems for video technology Vol. 10; no. 7; pp. 1154 - 1158
Main Authors Ribas-Corbera, Jordi, Lei, Shaw-Min
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2000
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Allocations
Bit rate
Blocking
Coding
Context modeling
Delay
Distortion
Frames
Laboratories
Mathematical analysis
Mathematical models
Motion compensation
Optimization
Quantization
Rate-distortion
Testing
Video coding
Video sequences
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Summary:In typical block-based video coding, the rate-control scheme allocates a target number of bits to each frame of a video sequence and selects the block quantization parameters to meet the frame targets. In this work, we present a new technique for assigning such targets. This method has been adopted in the test model TMN10 of H.263+, but it is applicable to any video coder and is particularly useful for those that use B frames. Our approach selects the frame targets using formulas that result from combining an analytical rate-distortion optimization and a heuristic technique that compensates for the distortion dependency among frames. The method does not require pre-analyses, and encodes each frame only once; hence, it is geared toward low-complexity real-time video coding. We compare this new frame-layer bit allocation in TMN10 to that in MPEG-2's TM5 for a variety of bit rates and video sequences.
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ISSN:1051-8215
1558-2205
DOI:10.1109/76.875518