发明名称 Navigation system for handheld scanner
摘要 A method and apparatus are provided for efficiently obtaining navigational position of a sensor array based on a correlation between images captured by the sensor array at successive points in time. This is achieved by first acquiring a reference frame through said sensor array, successively acquiring a sample frame through said sensor array. Correlation data representing a relationship between the sample frame and the reference frame is then generated and a displacement of a reference feature contained in both the reference frame and the sample frame is determined based on the correlation data. The correlation surface of the correlation data is modeled as a general two-dimensional Taylor series expansion. The method and apparatus of the present invention can be advantageously employed in a scanning device to provide efficient scheme for obtaining navigational information based on a comparison of image frames captured by a sensor array of the scanning device at successive points in time.
申请公布号 US6195475(B1) 申请公布日期 2001.02.27
申请号 US19980153639 申请日期 1998.09.15
申请人 HEWLETT-PACKARD COMPANY 发明人 BEAUSOLEIL, JR. RAYMOND G.;ALLEN ROSS R.
分类号 H04N1/19;G06F17/17;G06T1/00;H04N1/047;H04N1/107;(IPC1-7):G06K9/20 主分类号 H04N1/19
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