Certain undulating surfaces have an ambiguous relief which may appear as convex or concave. The direction of relief is generally held to depend primarily on assumptions about the direction of illumination. It is suggested that this does not apply to pictures with relief features with occluding edges.
Get full access to this article
View all access options for this article.
References
1.
DemberW NWarmJ S, 1979Psychology of Perception (New York: Rinehart and Winston).
2.
GregoryR L, 1970The Intelligent Eye (London: Weidenfeld and Nicolson).
3.
KingE A, 1976Space Geology: An Introduction (New York: John Wiley)
4.
LevineM WShefnerJ M, 1981Fundamentals of Sensation and Perception (Reading, MA: Addison-Wesley).
5.
OppelJ J, 1856“Über ein Anaglyptoskop”Annalen der Physik und Chemie175466–469.
6.
RittenhouseD, 1786“Explanation of an optical deception”Transactions of the American Philosophical Society237–42.
7.
SchröderH, 1858“Über eine optische Inversion bei Betrachtung verkehrter, durch optische Vorrichtung entworfener physischer Bilder”Annalen der Physik und Chemie181298–311.
