出版社：The Institute of Image Information and Television Engineers
摘要：In this paper we propose a novel method of arbitrarily focused image acquisition using multiple differently focused images. Based on the assumption that depth of the scene changes stepwise, we derive a formula between the desired arbitrarily focused image and multiple acquired images; we can reconstruct the arbitrarily focused image by iterative use of the formula. We show we can reconstruct arbitrarily focused images for natural scenes. In other words, we can simulate virtual cameras and synthesize images focused on arbitrary depths. Our method needs only Point Spread Functions (PSFs) of acquired images for reconstruction and does not need any spatial segmentation. We also present our method of analysis of camera features; we analyze the relation between PSFs and camera parameters for test scenes. Then using the relation we can generate the desired arbitrarily focused images without any preprocessings for determining PSFs of the acquired images.
