Image analysis – Image transformation or preprocessing – General purpose image processor
Patent
1994-06-28
1997-04-15
Boudreau, Leo
Image analysis
Image transformation or preprocessing
General purpose image processor
382190, G06K 900
Patent
active
056218273
ABSTRACT:
An image processing method and the apparatus thereof for approximating an object shape and reconstructing the corresponding image by subjecting a radial range image to approximating with polygons and reconstructing an image from these polygons execute the following processes. At block B210, reading a radial range image data is executed. At block B220, a plural of different resolution radial range images are generated based upon the read radial range image. At block B230, normal vectors, according to each resolution of a radial range image, are calculated. At block B240, an edge-map having a plural of edges is generated in such a manner that a plural of edges are generated depending upon the resulting normal vectors and the radial range images of different resolutions. At block B250, the edge-maps of all kinds of resolutions are ORed to form a synthesized map. The synthesized map is subjected to correcting crossing and isolated edges. At block B260, each polygon is divided into a plural of triangles. At block B270, assigning 3 dimensional coordinate values and the normal vector generated at block B230 to each apex and the corresponding triangle plane respectively, is executed. At block B280, eliminating unnecessary triangle gaps around a T-shaped point is executed.
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Ohshima Toshikazu
Uchiyama Shinji
Yamamoto Hiroyuki
Boudreau Leo
Canon Kabushiki Kaisha
Tadayon Bijan
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