| 摘要 |
The present invention relates to a method for generating an orthophoto image. The method can be used to utilize an orthophoto image mainly for creation of a topographic map or as a photographic map. [Problem to be solved] An object is to provide a method for generating an orthophoto image that can realize relatively easy image capturing and generation of an orthophoto image with high image quality. A further object is to provide an image capturing device suitable for image capturing utilizing the method for generating the orthophoto image. [Means for solving problem] The method includes divisionally-capturing a target region from a platform such as an airplane (1) by rendering viewing angles as being different from each other as well as rendering a focal length (f, f′) as being different with reference to a predetermined ground resolution, thereafter generating an elevation model (5) of the entire target region (1) in accordance with matching of elevation models (3, 3) generated based on respective divisionally-captured images (2) between image capturing overlap regions (4), and generating an orthophoto image of the entire target region by applying an orthogonal projection transformation processing to the respective divisionally-captured images (2) by use of altitude information of the elevation model (5).
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