| 摘要 |
Picture data provision systems, methods, and programs provide picture data of an aerially-photographed ground surface to a picture using device. The systems, methods, and programs access determination target picture data that is the data of the aerially-photographed ground surface, and determine a recognition difficult portion within the determination target picture data. The recognition difficult portion is a portion of the determination target picture data where recognizing the ground surface is difficult. The systems, methods, and programs determine whether the determination target picture data is recognized as provision target picture data based on feature information and a determination result of the recognition difficult portion of the determination target picture data. The feature information is information regarding a feature included in determination corresponding map data and including position information of each feature. The determination corresponding map data is map data of a ground surface area corresponding to the determination target picture data.
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