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|1. (WO2014199860) METHOD FOR GENERATING TEXTURE-IMAGE DATA|
|Applicants:||GEO TECHNICAL LABORATORY CO., LTD.
|Title:||METHOD FOR GENERATING TEXTURE-IMAGE DATA|
[Problem] To generate texture-image data to be applied to polygons in a 3D model. [Solution] A plurality of pieces of image data taken of a feature for which a texture is to be generated are read in, and by analyzing shooting conditions from when the images were taken and color information within the image data, corresponding feature points across the images are obtained. To generate a texture, for each target pixel (PP1 through PP3) constituting the texture, the pixels (CP11, etc.) corresponding thereto in the respective images are determined and the color of the target pixel is selected using the average of the color information for the corresponding pixels. Since the feature-point correspondence relationship across the images is known, through the use of a relative positional relationship based on said feature points, corresponding pixels other than the feature points can also be identified. Since, in this way, texture colors are selected on a per-pixel basis using a plurality of pieces of image data, a texture image can be generated with some images used to fill in gaps in other images, such as sections occluded by other polygons.