发明名称 System and method for capturing document orientation information with a digital camera
摘要 The present invention provides a digital camera capturing technique for documents. In one embodiment, a method for a digital camera capturing technique includes determining an orientation of an object (e.g., a document) relative to an optical axis of the digital camera, and determining a distance of the object from the digital camera. The method also includes determining a planarity of the object (e.g., a curl of the document). The method further includes projecting a pattern on the object, and detecting the projected pattern, which is then processed to determine the orientation of the object relative to the optical axis of the digital camera, the distance of the object from the digital camera, and the planarity of the object.
申请公布号 US6741279(B1) 申请公布日期 2004.05.25
申请号 US19980120096 申请日期 1998.07.21
申请人 HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 发明人 ALLEN ROSS R.
分类号 H04N5/232;G01B11/25;G01B11/30;G02B7/28;G03B5/04;H04N1/195;(IPC1-7):H04N5/262 主分类号 H04N5/232
代理机构 代理人
主权项
地址