2026-07-30T02:05:42Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:8793 2024-03-06T10:42:40Z ddc:004 open_access

Evolution of Impossible Objects (Invited Paper) Sugihara, Kokichi Ambiguous cylinder anomalous picture impossible motion impossible object optical illusion Impossible objects - 3D objects that can create a visual effect that seems impossible - can be classified by generation based on the order in which they were discovered or produced. The first generation consists of objects whose appearance when observed from a certain viewpoint matches a picture of an impossible object. Many such objects can be created, as there are multiple 3D objects that will project the same two-dimensional picture, including shapes that the human vision system is unable to perceive. The gap between the mathematical and the psychological can also create other types of "impossible" visual effects. Impossible objects are here classified into seven groups. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Kokichi Sugihara 2018 Is Part Of LIPIcs, Volume 100, 9th International Conference on Fun with Algorithms (FUN 2018) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/LIPIcs.FUN.2018.2 urn:nbn:de:0030-drops-87939 https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FUN.2018.2 eng https://creativecommons.org/licenses/by/3.0/legalcode