Motion parameter estimation based on the block recursive algorithm with finite word length

A three parameter motion model can better describe the motion trajectory of the picture element in a video sequence. Combining the features of the block process and recursive estimation, a block recursive algorithm is proposed to calculate these three motion parameters with compensation for the vari...

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Bibliographic Details
Published in:IEEE transactions on consumer electronics Vol. 43; no. 4; pp. 1124 - 1131
Main Authors: LIU, P.-C, CHANG, W.-T, SHEN, W.-Z
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.11.1997
Institute of Electrical and Electronics Engineers
Subjects:
Applied sciences
Cameras
Convergence
Exact sciences and technology
Image processing
Image sequences
Information, signal and communications theory
Iterative algorithms
Motion compensation
Motion estimation
Parameter estimation
Signal processing
Signal processing algorithms
Stability
Telecommunications and information theory
Video coding
Parameter estimation
Motion estimation
Image processing
Recursive algorithm
ISSN:0098-3063
Online Access:Get full text
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Summary:A three parameter motion model can better describe the motion trajectory of the picture element in a video sequence. Combining the features of the block process and recursive estimation, a block recursive algorithm is proposed to calculate these three motion parameters with compensation for the variety of block positions to get a better stability. To simplify the hardware implementation requirements, the representation accuracy of the displaced frame difference and gradient that are given is analyzed. From this analysis we propose a quantized block recursive algorithm with quantized gradient to reduce the computational complexity. With this simplification the quantized motion estimation algorithm has a sufficient computational speed to meet the requirement of real time application with the least accuracy loss.
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ISSN:0098-3063
DOI:10.1109/30.642380