TY - GEN
T1 - Conjunction search using a 1-D, analog VLSI-based, attentional search/tracking chip
AU - Horiuchi, Timothy
AU - Niebur, Ernst
N1 - Publisher Copyright:
© 1999 IEEE.
PY - 1999
Y1 - 1999
N2 - The ability of animals to select a limited region of sensory space for scrutiny is an important factor in dealing with cluttered or complex sensory environments. Such an «attentional» system in the visual domain is believed to be involved in both the perception of objects and the control of eye movements in primates. While we can intentionally guide our attention to perform a specific task, it is also reflexively drawn to «salient» features in our sensory input space. Understanding how high-level task information and lour-level stimulus information can combine to control our sensory processing is of great interest to both neuroscience and engineering. Towards this end, we have designed and fabricated a one-dimensional, analog VLSI vision chip that models covert attentional search and tracking. We extend previous analog VLSI work (Morris and DeWeerth, 1997) on the delayed onset of inhibition in a winner-take-all network to now use extracted image edges as input to the attentional saliency map and to perform serial search on a particular feature conjunction (spatial derivative and the direction-of-motion). We further demonstrate the ability to modify the circuit's parameters «on-the-fly» to switch between a search mode and a tracking mode.
AB - The ability of animals to select a limited region of sensory space for scrutiny is an important factor in dealing with cluttered or complex sensory environments. Such an «attentional» system in the visual domain is believed to be involved in both the perception of objects and the control of eye movements in primates. While we can intentionally guide our attention to perform a specific task, it is also reflexively drawn to «salient» features in our sensory input space. Understanding how high-level task information and lour-level stimulus information can combine to control our sensory processing is of great interest to both neuroscience and engineering. Towards this end, we have designed and fabricated a one-dimensional, analog VLSI vision chip that models covert attentional search and tracking. We extend previous analog VLSI work (Morris and DeWeerth, 1997) on the delayed onset of inhibition in a winner-take-all network to now use extracted image edges as input to the attentional saliency map and to perform serial search on a particular feature conjunction (spatial derivative and the direction-of-motion). We further demonstrate the ability to modify the circuit's parameters «on-the-fly» to switch between a search mode and a tracking mode.
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U2 - 10.1109/ARVLSI.1999.756054
DO - 10.1109/ARVLSI.1999.756054
M3 - Conference contribution
AN - SCOPUS:85008015561
T3 - Proceedings - 20th Anniversary Conference on Advanced Research in VLSI, ARVLSI 1999
SP - 276
EP - 290
BT - Proceedings - 20th Anniversary Conference on Advanced Research in VLSI, ARVLSI 1999
A2 - DeWeerth, Stephen P.
A2 - Wills, D. Scott
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1999 Conference on Advanced Research in VLSI, ARVLSI 1999
Y2 - 21 March 1999 through 24 March 1999
ER -