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Figure-Ground Segregation Using an Analog VLSI Chip
November/December 1992 (vol. 12 no. 6)
pp. 46-57

An analog, parallel, computational system, built on a single, power-lean, CMOS VLSI chip, that labels all points inside a possibly incomplete and noisy contour in real time is described. The circuit performs figure-ground segregation of a scene, labeling all the points inside a designated figure by one voltage and all other parts outside this object using a different voltage value. Its behavior is shown to be robust, since small breaks in the contour are automatically sealed, providing for figure-ground segregation in a noisy environment. The two major limitations of the current figure-ground chip are its limited capability for recognizing figures with large gaps in the contour and the constraint that the figure always has to be centered.

Jin Luo, Christof Koch, Bimal Mathur, "Figure-Ground Segregation Using an Analog VLSI Chip," IEEE Micro, vol. 12, no. 6, pp. 46-57, Nov.-Dec. 1992, doi:10.1109/40.180246
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