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Abstract

An object recognition apparatus for determining the presence and shape of an object in an image has a multiplier, an adder and a memory for obtaining histograms relative to densities for each of specified partial areas in the image. The histogram of each partial area is stored in the memory at addressed determined by adding an actual density of each of pixels in the partial area to a number indicating the partial area multiplied to be shifted to the left by the number of quantization bits. In a micro computer of the apparatus, the histogram for each partial area compared with a corresponding reference histogram which indicates that an object is present in an at least one part of the partial area. Based on a comparison result, the micro computer determines whether the object is present or not in each partial area. Then, based on the combination of partial areas where it is determined that the object is present, the shape of the object is evaluated.

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First Claim