发明名称 |
ORTHORECTIFYING STITCHED OBLIQUE IMAGERY TO A NADIR VIEW, AND APPLICATIONS THEREOF |
摘要 |
Embodiments of this invention relates to orthorectifying oblique imagery to a nadir view. In an embodiment, a method orthorectifies oblique photographic imagery. An oblique photographic image is projected onto a three-dimensional model of terrain. Points are sampled from the projected photographic image at the intersection of the three-dimensional model of terrain and parallel rays extended from a virtual viewport having a nadir perspective. The sampled points are assembled into an orthorectified image. Finally, the orthorectif?ed image or the sampled points are adjusted approximately according to a difference in tilt angle between a camera that captured the oblique photographic image and the viewport having the nadir perspective to generate a foreshortened orthorectif?ed image. Each location in the foreshortened orthorectif?ed image corresponds linearly to a corresponding location in a two-dimensional map. |
申请公布号 |
CA2779997(C) |
申请公布日期 |
2013.04.23 |
申请号 |
CA20102779997 |
申请日期 |
2010.11.09 |
申请人 |
GOOGLE INC. |
发明人 |
WILSON, RANDALL;RHODES, CHARLES C.;KIRMSE, ANDREW;ZELINKA, STEPHEN D. |
分类号 |
G06T3/00 |
主分类号 |
G06T3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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