| dc.contributor.author |
Ancona, Nicola |
en_US |
| dc.contributor.author |
Poggio, Tomaso |
en_US |
| dc.date.accessioned |
2004-10-08T20:34:23Z |
|
| dc.date.available |
2004-10-08T20:34:23Z |
|
| dc.date.issued |
1993-10-01 |
en_US |
| dc.identifier.other |
AIM-1375 |
en_US |
| dc.identifier.uri |
http://hdl.handle.net/1721.1/6609 |
|
| dc.description.abstract |
In the first part of this paper we show that a new technique exploiting 1D correlation of 2D or even 1D patches between successive frames may be sufficient to compute a satisfactory estimation of the optical flow field. The algorithm is well-suited to VLSI implementations. The sparse measurements provided by the technique can be used to compute qualitative properties of the flow for a number of different visual tsks. In particular, the second part of the paper shows how to combine our 1D correlation technique with a scheme for detecting expansion or rotation ([5]) in a simple algorithm which also suggests interesting biological implications. The algorithm provides a rough estimate of time-to-crash. It was tested on real image sequences. We show its performance and compare the results to previous approaches. |
en_US |
| dc.description.provenance |
Made available in DSpace on 2004-10-08T20:34:23Z (GMT). No. of bitstreams: 2
AIM-1375.ps.Z: 767003 bytes, checksum: 736a9d47643a1bca73a118ea497c7a89 (MD5)
AIM-1375.pdf: 1368054 bytes, checksum: 1d8dd3df5ee4d16da5f857a7e7043e2a (MD5)
Previous issue date: 1993-10-01 |
en |
| dc.format.extent |
767003 bytes |
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| dc.format.extent |
1368054 bytes |
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| dc.format.mimetype |
application/octet-stream |
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| dc.format.mimetype |
application/pdf |
|
| dc.language.iso |
en_US |
|
| dc.relation.ispartofseries |
AIM-1375 |
en_US |
| dc.title |
Optical Flow From 1D Correlation: Application to a Simple Time-To-Crash Detector |
en_US |
