Abstract
In this article we treat purely metrical properties of the visual image, e.g. the time changes of the relative positions and orientations of image details. Self-induced movements of an observer relative to rigid bodies in his environment generate charactertistic motion parallax fields. The observer may regard those fields as proprioceptive and interprete the geometrical invariants of the fields as indicators of solid shape. In this way his perceptions become object-oriented, which is the normal case as the many constancy-phenomena show. Similar arguments apply to the disparity field of binocular vision. In this paper we treat the qualitative nature of such fields. [In this case the qualitative nature is basic. Compare the case of an equation with a single unknown. Often one is interested primarily in the qualitative solution (are there roots? How many?), and only slightly in the quantitative information (the numerical value of a root).] The qualitative nature of the fields is fixed if their singularities are known. It is shown that the singularities are of two types: isolated points (so-called specular points) and line-singularities (so-called folds, cusps and T-junctions). It is shown that for most vantage points that an observer can occupy, the topological structure of the set of singularities does not change if the observer performs small exploratory movements. That is most vantage points are stable. At an unstable vantage point the set of singularities changes and the observer experiences an event. Because certain properties of the set of singularities are shown to be preserved, only a few simple types of event are possible. A complete list is presented. The occurrence of an event is shown to be simply related to the solid shape of the objects of vision. Our geometrical theory enables us to understand the structure of the observer's internal models of external bodies.
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References
Andronov, A. A., Leontovich, E. A., Gordon, I. I., Maier, A. G.: Qualitative theory of second-order dynamic systems. New York: J. Wiley Sons 1973
Blaschke, W.: Vorlesungen über Differentialgeometrie I. Berlin: Julius Springer 1921
Eells, J., Jr.: Singularities of smooth maps. New York: Gordon and Breach 1967
Gibson, J.J.: The perception of the visual world. Boston: Houghton Mifflin Co. 1950
Gibson, J.J.: What is a form? Psychol. Rev. 58, 403–412 (1951)
Gibson, J.J.: The senses considered as perceptual systems. Boston: Houghton Mifflin Co. 1966
Golubitsky, M., Guillemin, V.: Stable mappings and their singularities. Berlin-Heidelberg-New York: Springer 1973
Guzmán, A.: Decomposition of a visual scene into three-dimensional bodies. In: Automatic interpretation and classification of images. Ed.: Grasselli, A. New York: Academic Press 1969
Helmholtz, H. von: Handbuch der Physiologischen Optik. Hamburg-Leipzig: Leopold Voss 1896
Hilbert, D., Cohn-Vossen, S.: Geometry and the imagination. New York: Chelsea 1952
Holst, E. von, Mittelstaedt, H.: Das Reafferenzprinzip (Wechselwirkung zwischen Zentralnervensystem und Peripherie). Naturwissenschaften 37, 464–476 (1950)
Kennedy, J. M.: Icons and information. In: Media and symbols: the forms of expression, communication, and education. Seventythird Yearbook of the National Society for the study of Education, Chapter IX, pp. 211–240. Chicago: University of Chicago Press 1974
Kennedy, J. M., Silver, J.: The surrogate functions of lines in visual perception: evidence from antipodal rock and cave artwork sources. Perception 3, 313–322 (1974)
Kennedy, J.MM., Ross, A. S.: Outline picture perception by the Songe of Papua. Perception 4, 391–406 (1975)
Koenderink, J. J., Doorn, A. J. van: Invariant properties of the motion parallax field due to the movement of rigid bodies relative to an observer. Optica Acta 22, 773–791 (1975)
Koenderink, J.J., Doorn, A.J. van: Local structure of movement parallax of the plane. J. Opt. Soc. Amer. 66, 717–723 (1976a)
Koederink, J.J., Doorn, A.J. van: Visual perception of rigidity of solid shape. J. Math. Biol. 3, 79–85 (1976b)
Koenderink, J.J., Doorn, A.J. van: Geometry of binocular vision and a model for stereopsis. Biol. Cybernetics 21, 29–35 (1976c
Longuet-Higgins, M.S.: Reflection and refraction at a random moving surface. I. Pattern and paths of specular points. J. Opt. Soc. Amer. 50, 838–844 (1960)
Metzger, W.: Gesetze des Sehens. p. 29. Frankfurt am Main: W. Kramer 1936
Nakayama, K., Loomis, J.M.: Optical velocity patterns, velocitysensitive neurons, and space perception: a hypothesis. Perception 3, 63–80 (1974)
Schrödinger, E.: Mind and Matter. p. 36. Cambridge: University Press 1959
Struik, D.J.: Lectures on classical differential geometry. Reading, MA: Addison Wesley 1961)
Thom, R.: Stabilité structurelle et morphogénèse. Reading, MA: W.A.Benjamin Inc. 1972
Whitney, H.: On singularities of mappings of Euclidean spaces. I. Mappings of the plane into the plane. Ann. Math. 62, 374–410 (1955)
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Koenderink, J.J., van Doorn, A.J. The singularities of the visual mapping. Biol. Cybernetics 24, 51–59 (1976). https://doi.org/10.1007/BF00365595
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DOI: https://doi.org/10.1007/BF00365595