An accidental viewpoint (i.e. eccentric or fixed viewpoint) is a singular position from which an image can be perceived, creating either an ambiguous image or an illusion. The image perceived at this angle is viewpoint-specific, meaning it cannot be perceived at any other position, known as generic or non-accidental viewpoints. These view-specific angles are involved in object recognition.[1] In its uses in art and other visual illusions, the accidental viewpoint creates the perception of depth often on a two-dimensional surface[2] with the assistance of monocular cues.
- ^ Wilson, Kevin D; Farah, Martha J (May 2003). "When does the visual system use viewpoint-invariant representations during recognition?". Cognitive Brain Research. 16 (3): 399–415. doi:10.1016/S0926-6410(03)00054-5. PMID 12706220.
- ^ Sánchez-Reyes, Javier; Chacón, Jesús M. (March 2020). "How to make impossible objects possible: Anamorphic deformation of textured NURBS". Computer Aided Geometric Design. 78: 101826. doi:10.1016/j.cagd.2020.101826.