@article{oai:fit.repo.nii.ac.jp:00000689,
 author = {内田, 一徳},
 issue = {2},
 journal = {福岡工業大学研究論集},
 month = {Mar},
 note = {application/pdf, 論文(Article), This paper is concerned with a ray searching algorithm based on the imaging method for a three-dimensional (3D) closed space such as a tunnel, underground, office room as well as for a rough surface. First, the fundamental theory of the algoritm is described. Next, it is demonstrat­ed that the algorithm becomes simple when the closed space has a kind of symmetrical property. In this case the extension from two-dimensional (2D) rays to 3D ones is possible. Finally numerical ray examples are shown in 2D and 3D ways for some kinds of structures.},
 pages = {241--247},
 title = {イメージ法によるレイ探索アルゴリズム},
 volume = {31},
 year = {1999}
}