@article{oai:u-ryukyu.repo.nii.ac.jp:02001979, author = {北畠, 憲俊 and 陳, 延偉 and 仲尾, 善勝 and Kitabatake, Noritoshi and Chen, Yen-Wei and Nakao, Zensho}, issue = {58}, journal = {琉球大学工学部紀要}, note = {A single-pinhole camera is usually used for X-rey imaging. In URA coded aperture camera, the pinhole is replaced by multi-pinhole arrays arranged in m-sequences. Since the URA camera can view the object with a large solid angle, it can also provide some tomographic resolution for three-dimensional objects. But a reconstructed image is blurred by defocus artifact. In this paper, we propose a new iterative algorithm to remove the defocus artifact. We show that the reconstructed image can be improved by using the proposed iterative algorithm., 紀要論文}, pages = {73--78}, title = {反復法によるURAトモグラフィックイメージの画質改善} }