发明授权
- 专利标题: Graphic recognition device, graphic recognition method, and graphic recognition program
- 专利标题(中): 图形识别装置,图形识别方法和图形识别程序
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申请号: US12160816申请日: 2006-12-26
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公开(公告)号: US08229162B2公开(公告)日: 2012-07-24
- 发明人: Shinichi Miyamoto
- 申请人: Shinichi Miyamoto
- 申请人地址: JP Tokyo
- 专利权人: NEC Corporation
- 当前专利权人: NEC Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Young & Thompson
- 优先权: JP2006-009132 20060117
- 国际申请: PCT/JP2006/325903 WO 20061226
- 国际公布: WO2007/083494 WO 20070726
- 主分类号: G06K9/00
- IPC分类号: G06K9/00
摘要:
A graphic recognition device, method, and recognition program recognize graphics without being influenced by an image shadow area. Image input unit acquires the image of the outside environment of a vehicle using a vehicle mounted camera. A light source location information acquiring unit calculates location of a light source such as the sun using the acquired image. User vehicle shape acquiring unit and other vehicle shape acquiring unit generate shape information for the vehicles indicating the location of points forming vehicle contours. Shadow area calculating unit calculates, on the basis of both vehicles' shape information, the object shape information and the light source location information, the location coordinates of the shadow area, and converts the location coordinates into two-dimensional coordinates to the shadow/non-shadow area emphasis flag recognizing unit, which recognizes the flag in the image by judging the presence/absence of the recognition object in each shadow and non-shadow area specified.
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