TY - SER AU - Koenderink, Jan TI - Vision, an Optical User Interface PY - 2019/// PB - sage KW - vision, KW - awareness, KW - user interface, KW - Gestalt, KW - psychogenesis KW - local sign KW - scale-space, KW - shape from X, KW - Umwelt N2 - I present a personal account of visual awareness, from a biological, that is, ethological and evolutionary perspective. The facts I select are mainly phenomenological, with a sprinkle of psychophysics, and a snuff of brain theory. This is because I consider visual awareness to be a phenomenological brute fact that has no equivalent in either physiology or cognitive science. My emphasis is on bare fundamentals and integration. I primarily aim at academic understanding UR - https://doi.org/10.1177/0301006619853758 ER -