| 发明名称 | Estimation of shift and small image distortion | ||
| 摘要 | Disclosed is method of measuring the displacement between a reference region of a reference image and a sample region of a sample image. The method spatially varies the reference region using a one-dimensional filter having complex kernel values, wherein a length (radius) and direction (angle or tangent segment) of the filter is a function of position in the reference region. The method then measures a displacement between the reference region and the sample region by comparing the spatially varied reference region and the sample region. | ||
| 申请公布号 | US9552641(B2) | 申请公布日期 | 2017.01.24 |
| 申请号 | US201213690942 | 申请日期 | 2012.11.30 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Fletcher Peter Alleine;Chong Eric Wai-Shing;Arnison Matthew Raphael;Kazama Yoichi;Courtney Allen Peter |
| 分类号 | G06K9/00;G06T7/00 | 主分类号 | G06K9/00 |
| 代理机构 | Canon USA, Inc. I.P. Division | 代理人 | Canon USA, Inc. I.P. Division |
| 主权项 | 1. A method of measuring the displacement between a reference region of a reference image and a sample region of a sample image, the method comprising: spatially varying the reference region using a one-dimensional filter, wherein a length and direction of the filter is a function of position in the reference region; and measuring a displacement between the reference region and the sample region by comparing the spatially varied reference region and the sample region, wherein the one-dimensional filter comprises complex kernel values. | ||
| 地址 | Tokyo JP | ||