Separable time-causal and time-recursive spatio-temporal receptive fields
2015 (English)In: Scale Space and Variational Methods in Computer Vision: 5th International Conference, SSVM 2015, Lège-Cap Ferret, France, May 31 - June 4, 2015, Proceedings / [ed] J.-F. Aujol et al., Springer, 2015, 90-102 p.Conference paper (Refereed)
We present an improved model and theory for time-causal and time-recursive spatio-temporal receptive fields,obtained by a combination of Gaussian receptive fields over the spatial domain and first-order integrators or equivalently truncated exponential filters coupled in cascade over the temporal domain. Compared to previous spatio-temporal scale-space formulations in terms of non-enhancement of local extrema or scale invariance, these receptive fields are based on different scale-space axiomatics over time by ensuring non-creation of new local extrema or zero-crossings with increasing temporal scale. Specifically, extensions are presented about parameterizing the intermediate temporal scale levels, analysing the resulting temporal dynamics and transferring the theory to a discrete implementation in terms of recursive filters over time.
Place, publisher, year, edition, pages
Springer, 2015. 90-102 p.
, Lecture Notes in Computer Science, 9087
Computer Science Computer Vision and Robotics (Autonomous Systems) Bioinformatics (Computational Biology)
IdentifiersURN: urn:nbn:se:kth:diva-160482DOI: 10.1007/978-3-319-18461-6_8ISBN: 978-3-319-18461-6OAI: oai:DiVA.org:kth-160482DiVA: diva2:789796
SSVM 2015: Fifth International Conference on Scale Space and Variational Methods in Computer Vision, Lège Cap Ferret, France, 31 May - 4 June, 2015
FunderSwedish Research Council, 2010-4766,2014-4083
QC 201505112015-02-202015-02-202016-04-28Bibliographically approved