ML Anthology

Convected Activation Profiles and the Measurement of Visual Motion

Allen M. Waxman, Jian Wu, Fredrik Bergholm
CVPR 1988 pp. 717-723
doi:10.1109/CVPR.1988.196313 /cvpr/1988/waxman1988cvpr-convected/

Abstract

A method is developed for the measurement of short-range visual motion in image sequences, making use of the motion of image features such as edges and points. Each feature generates a Gaussian activation profile in a spatiotemporal neighborhood of specified scale around the feature itself; this profile is then convected with motion of the feature. The authors show that image velocity estimates can be obtained from such dynamic activation profiles using a modification of familiar gradient techniques. The resulting estimators can be formulated in terms of simple ratios of spatiotemporal filters (i.e. receptive fields) convolved with image feature maps. A family of activation profiles of varying scale must be utilized to cover a range of possible image velocities. They suggest a characteristic speed normalization of the estimate obtained from each filter in order to decide which estimate is to be accepted. They formulate the velocity estimators for dynamic edges in 1-D and 2-D image sequences, as well as that for dynamic feature points in 2-D image sequences.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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Cite

Text

Waxman et al. "Convected Activation Profiles and the Measurement of Visual Motion." IEEE/CVF Conference on Computer Vision and Pattern Recognition, 1988. doi:10.1109/CVPR.1988.196313

Markdown

[Waxman et al. "Convected Activation Profiles and the Measurement of Visual Motion." IEEE/CVF Conference on Computer Vision and Pattern Recognition, 1988.](https://mlanthology.org/cvpr/1988/waxman1988cvpr-convected/) doi:10.1109/CVPR.1988.196313

BibTeX

@inproceedings{waxman1988cvpr-convected,
  title     = {{Convected Activation Profiles and the Measurement of Visual Motion}},
  author    = {Waxman, Allen M. and Wu, Jian and Bergholm, Fredrik},
  booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition},
  year      = {1988},
  pages     = {717-723},
  doi       = {10.1109/CVPR.1988.196313},
  url       = {https://mlanthology.org/cvpr/1988/waxman1988cvpr-convected/}
}