HMM based method for dynamic texture detection
Date
2007
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Source Title
Proceedings of the 15th Signal Processing and Communications Applications, IEEE 2007
Print ISSN
2165-0608
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IEEE
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Language
English
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Abstract
A method for detection of dynamic textures in video is proposed. It is observed that the motion vectors of most of the dynamic textures (e.g. sea waves, swaying tree leaves and branches in the wind, etc.) exhibit random motion. On the other hand, regular motion of ordinary video objects has well-defined directions. In this paper, motion vectors of moving objects are estimated and tracked based on a minimum distance based metric. The direction of the motion vectors are then quantized to define two threestate Markov models corresponding to dynamic textures and ordinary moving objects with consistent directions. Hidden Markov Models (HMMs) are used to classify the moving objects in the final step of the algorithm.
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Keywords
Films , Markov processes , Offshore oil well production , Signal processing , Textures , Vectors , Dynamic textures , Markov modelling , Minimum distances , Motion vectors , Moving objects , Random motions , Regular motion , Sea waves , Texture detection , Tree leaves , Video objects , Hidden Markov models