?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=An+improved+2D+optical+flow+sensor+for+motion+segmentation&rft.creator=stocker%2C+alan&rft.subject=Computational+Neuroscience&rft.subject=Artificial+Intelligence&rft.subject=Machine+Vision&rft.subject=Neural+Nets&rft.subject=Robotics&rft.description=+A+functional+focal-plane+implementation+of+a+2D+optical+flow+system+is+presented+that+detects+an%0A++preserves+motion+discontinuities.+The+system+is+composed+of+two+different+network+layers+of+analog%0A++computational+units+arranged+in+a+retinotopical+order.+The+units+in+the+first+layer+(the+optical%0A++flow+network)+estimate+the+local+optical+flow+field+in+two+visual+dimensions%2C+where+the+strength%0A++of+their+nearest-neighbor+connections+determines+the+amount+of+motion+integration.+Whereas+in+an%0A++earlier+implementation+%5Ccite%7BStocker_Douglas99%7D+the+connection+strength+was+set+constant+in+the%0A++complete+image+space%2C+it+is+now+%5Cemph%7Bdynamically+and+locally%7D+controlled+by+the+second+network%0A++layer+(the+motion+discontinuities+network)+that+is+recurrently+connected+to+the+optical+flow%0A++network.++The+connection+strengths+in+the+optical+flow+network+are+modulated+such+that+visual%0A++motion+integration+is+ideally+only+facilitated+within+image+areas+that+are+likely+to+represent%0A++common%0A++motion+sources.%0A++Results+of+an+experimental+aVLSI+chip+illustrate+the+potential+of+the+approach+and+its%0A++functionality+under+real-world+conditions.&rft.date=2002&rft.type=Conference+Paper&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2331%2F3%2Fstocker.pdf&rft.identifier=++stocker%2C+alan++(2002)+An+improved+2D+optical+flow+sensor+for+motion+segmentation.++%5BConference+Paper%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2331%2F<script src='//archive-bar.soton.ac.uk/archive-bar.js'></script>