Patent ID: 8855417
Filing Date: 2014-10-07
Classification: G01B,G06K,G06T

Abstract:
1. A shape extraction device comprising: an area extracting unit for recognizing component images in which it is presumed that an object in a particular shape is imaged within a frame, to extract component image areas from said frame in which said component images are respectively present; a drawing generator for sequentially selecting said component image areas, and converting images including said component image in said selected component image areas into respectively a drawing image, to generate a component drawing image; an eliminator for eliminating one shape line and/or a certain shape line as an unwanted shape line among shape lines included in respectively said component drawing image, said one shape line having a center in a substantially equal position to a center of said component drawing image and having vertical and horizontal sizes equal to or less than substantially a half of a size of said component drawing image, said certain shape line being disposed on a straight line passing a center point of said one shape line and a center point of said component drawing image; a shape estimation unit for determining an estimated shape by optimizing a size of said particular shape so as to correspond to a corrected drawing image after elimination of said unwanted shape line; an evaluation unit for judging appropriacy of said estimated shape by evaluating degree of overlap between said estimated shape and said corrected drawing image; and an object shape determining unit for specifying said estimated shape as a shape of said object extracted from said frame if it is judged that said estimated shape is appropriate.