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
WO2011057258(A1)
申请公布日期
2011.05.12
申请号
WO2010US56013
申请日期
2010.11.09
申请人
GOOGLE INC.;WILSON, RANDALL;RHODES, CHARLES, C.;KIRMSE, ANDREW;ZELINKA, STEPHEN, D.
发明人
WILSON, RANDALL;RHODES, CHARLES, C.;KIRMSE, ANDREW;ZELINKA, STEPHEN, D.