Obstacle avoidance using flow field divergence
- 1 October 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Pattern Analysis and Machine Intelligence
- Vol. 11 (10), 1102-1106
- https://doi.org/10.1109/34.42840
Abstract
The use of certain measures of flow field divergence is investigated as a qualitative cue for obstacle avoidance during visual navigation. It is shown that a quantity termed the directional divergence of the 2-D motion field can be used as a reliable indicator of the presence of obstacles in the visual field of an observer undergoing generalized rotational and translational motion. The necessary measurements can be robustly obtained from real image sequences. Experimental results are presented showing that the system responds as expected to divergence in real-world image sequences, and the use of the system to navigate between obstacles is demonstrated.Keywords
This publication has 10 references indexed in Scilit:
- Finding motion parameters from spherical motion fields (or the advantages of having eyes in the back of your head)Biological Cybernetics, 1988
- Epipolar-plane image analysis: An approach to determining structure from motionInternational Journal of Computer Vision, 1987
- An Investigation of Smoothness Constraints for the Estimation of Displacement Vector Fields from Image SequencesIEEE Transactions on Pattern Analysis and Machine Intelligence, 1986
- Uniqueness and Estimation of Three-Dimensional Motion Parameters of Rigid Objects with Curved SurfacesIEEE Transactions on Pattern Analysis and Machine Intelligence, 1984
- Determining the instantaneous direction of motion from optical flow generated by a curvilinearly moving observerComputer Graphics and Image Processing, 1981
- A computer algorithm for reconstructing a scene from two projectionsNature, 1981
- Determining optical flowArtificial Intelligence, 1981
- Disparity Analysis of ImagesIEEE Transactions on Pattern Analysis and Machine Intelligence, 1980
- A computational theory of human stereo visionProceedings of the Royal Society of London. B. Biological Sciences, 1979
- The interpretation of structure from motionProceedings of the Royal Society of London. B. Biological Sciences, 1979