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- W2154674735 abstract "We have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expanding optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. We evaluated a detailed version of this model in simulation using a library of 50 test movies taken through a fisheye lens. The algorithm was evaluated on its ability to distinguish movies ending in collisions from movies in which no collision occurred. This biologically inspired algorithm is capable of 94% correct performance in this task using an ultra-low-resolution (132-pixel) image as input. A new elementary motion detector (EMD) circuit was developed to measure optic flow on a CMOS focal-plane sensor. This EMD circuit models the bandpass nature of large monopolar cells (LMCs) immediately postsynaptic to photoreceptors in the fly visual system as well as a saturating multiplication operation proposed for Reichart-type motion detectors. A 16/spl times/16 array of two-dimensional motion detectors was fabricated in a standard 0.5-/spl mu/m CMOS process. The chip consumes 140 /spl mu/W of power from a 5 V supply. With the addition of wide-angle optics, the sensor is able to detect collisions 100-400 ms before impact in complex, real-world scenes." @default.
- W2154674735 created "2016-06-24" @default.
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- W2154674735 date "2005-11-01" @default.
- W2154674735 modified "2023-10-18" @default.
- W2154674735 title "A biologically inspired analog IC for visual collision detection" @default.
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- W2154674735 doi "https://doi.org/10.1109/tcsi.2005.853517" @default.
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