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3 March 2008An algorithm for motion and change detection in image sequences based on chaos and information theory
Accurate and robust image change detection and motion segmentation has been of substantial interest in the image
processing and computer vision communities. To date no single motion detection algorithm has been universally
superior while biological vision systems are so adept at it. In this paper, we analyze image sequences using phase
plots generated from sequential image frames and demonstrate that the changes in pixel amplitudes due to the
motion of objects in an image sequence result in phase space behaviour resembling a chaotic signal. Recent research
in neural signals have shown biological neural systems are highly responsive to chaos-like signals resulting from
aperiodic forcing functions caused by external stimuli. We then hypothesize an alternative physics-based motion
algorithm from the traditional optical flow algorithm. Rather than modeling the motion of objects in an image as a
flow of grayscale values as in optical flow, we propose to model moving objects in an image scene as aperiodic
forcing functions, impacting the imaging sensor, be it biological or silicon-based. We explore the applicability of
some popular measures for detecting chaotic phenomena in the frame-wise phase plots generated from sequential
image pairs and demonstrate their effectiveness on detecting motion while robustly ignoring illumination change.
M. Farmer andC. Yuan
"An algorithm for motion and change detection in image sequences based on chaos and information theory", Proc. SPIE 6812, Image Processing: Algorithms and Systems VI, 68120K (3 March 2008); https://doi.org/10.1117/12.766934
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M. Farmer, C. Yuan, "An algorithm for motion and change detection in image sequences based on chaos and information theory," Proc. SPIE 6812, Image Processing: Algorithms and Systems VI, 68120K (3 March 2008); https://doi.org/10.1117/12.766934