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1994

A New Retina-Like Visual Sensor Performing the Polar Transform

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A New Retina-Like Visual Sensor Performing the Polar Transform
This paper describes the development of an anthropomorphic visual sensor with retina-like structure to perform the polar mapping. The sensor consists of a dove prism for imagerotation and a linear CCD sensor with 512 pixellline resolution, and holds approximately 45 Kbytes of image data. The retina-like sensor has variable resolution with increasing density towards the center of the visual field, and performs the polar transforming directly. The motion equation that relates the egomotion and/or the motion of the object in the scene to the optical flow is considerably simplified if the velocity is represented in a polar coordinate system, as opposed to a cartesian representation. Development of this sensor holds promise in application to high speed tracking systems, such as the eyes of navigation robots, because it has a data reduction characteristics and mapping function onto the polar plane.
Cheon Woo Shin, Seiji Inokuchi
Added 02 Nov 2010
Updated 02 Nov 2010
Type Conference
Year 1994
Where MVA
Authors Cheon Woo Shin, Seiji Inokuchi
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