Abstract
A CCD imager whose sampling structure is loosely modeled after the biological visual system is described. Its architecture and advantages over conventional cameras for pattern recognition are discussed. The sensor has embedded in its structure a logarithmic transformation that makes it size and rotation invariant. Simulations on real images using the actual sensor geometry have been performed to study the sensor performance for 2D pattern recognition and object tracking.
A CCD imager consisting of 30 concentric circles and 64 sensors per circle, whose pixel size increases linearly with eccentricity has been fabricated. The central part has a constant resolution with 102 photocells. The CCD is made in a three phase buried channel technology with triple poly and double metal layers. Preliminary results of the testing are given showing the validity of the design.
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© 1989 Kluwer Academic Publishers
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Van der Spiegel, J. et al. (1989). A Foveated Retina-Like Sensor Using CCD Technology. In: Mead, C., Ismail, M. (eds) Analog VLSI Implementation of Neural Systems. The Kluwer International Series in Engineering and Computer Science, vol 80. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1639-8_8
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DOI: https://doi.org/10.1007/978-1-4613-1639-8_8
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