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Extending the "oriented smoothness constraint" into the temporal domain and the estimation of derivatives of optical flow

: Nagel, H.-H.


Faugeras, O.:
ECCV '90. Computer Vision. Proceedings
Berlin: Springer, 1990 (Lecture Notes in Computer Science 427)
ISBN: 3-540-52522-X
ISSN: 0302-9743
pp.139-148 : Lit.
European Conference on Computer Vision (ECCV) <1, 1990, Antibes>
Conference Paper
Fraunhofer IITB ( IOSB) ()
divergence of optical flow; optical flow; oriented smoothness constraint

Recent experimental results by Schnörr 89 with an approach based on a simplified 'oriented smoothness constraint' show considerable improvement at expected discontinuities of the optical flow field. It thus appears justified to study whether the local gray value variation can be exploited in the temporal as well as in the spatial domain in order to achieve futher improvements at discontinuities in the optical flow field associated with the image areas of moving objects in image sequences. An extension or the oriented smoothness constraint into the temporal domain is presented. In this context, a local estimation approach for the spatiotemporal partial derivatives of optical flow has been developed. This, in turn, is used to compare two approaches for the definition of optical flow.