4F-02
視覚的に矛盾のない影を生成するための画像中の影を用いた3Dモデルの推定法
○呉　榮軒（東工大），齋藤　豪（お茶の水女子大／東工大）
A shadow appears while an object obstructs the light rays from light source. Therefore, a shadow defines powerful constraints between the light source, object, and surface on which it is cast. We present a novel objective function to estimate the 3D model of objects, which aims to create a 3D model casting the same shadow as seen in input image. Our method requires single input image and several user annotations, and is applicable to many different objects as long as the object casts hard shadow in input image. We tested on photographs of indoor and outdoor scenes illuminated by various types of light source and visually plausible shadows are synthesized with the estimated 3D models.
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