Abstract
In this paper we integrate spatial and temporal information, which are extracted separately from a video sequence, for indexing and retrieval purposes. We focus on two filter families that are suitable models of the human visual system for spatial and temporal information encoding. They are special cases of polynomial transforms that perform local decompositions of a signal. Spatial primitives are extracted using Hermite filters, which agree with the Gaussian derivative model of receptive field profiles. Temporal events are characterized by Laguerre filters, which preserve the causality constraint in the temporal domain. Integration of both models gives a spatio-temporal feature extractor based on early vision. They are efficiently implemented as two independent sets of discrete channels, Krawtchouk and Meixner, whose outputs are combined for indexing a video sequence. Results encourage our model for video indexing and retrieval.
This work was supported by the National Council of Science and Technology (CONACyT) of Mexico, grant 111539, and by the SEP of Mexico.
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Rivero-Moreno, C.J., Bres, S. (2004). Spatio-temporal Primitive Extraction Using Hermite and Laguerre Filters for Early Vision Video Indexing. In: Campilho, A., Kamel, M. (eds) Image Analysis and Recognition. ICIAR 2004. Lecture Notes in Computer Science, vol 3211. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30125-7_102
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DOI: https://doi.org/10.1007/978-3-540-30125-7_102
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23223-0
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