PSYB51H3 Chapter Notes - Chapter 4: Principles Of Grouping, Illusory Contours, Necker Cube
Document Summary
Middle (midlevel) vision: loosely defined stage of visual processing that comes after basic features have been extracted from image (early vision) and before object recognition and scene understanding (high level vision) Act of recognition must involve matching what we perceive now to a memory of something we perceive in past. Goal of middle vision is to organize elements of visual scene into groups that we can then recognize as objects. Illusory contours: contour that is perceived, even though nothing changes from one side of contour to other in image. Tendency of visual system to go beyond info given was problematic for one of earliest psychologists structuralists. Structuralism: school of thought believing that complex objects or perceptions could be understood by analysis of components. Structuralists like wundt argued that perceptions are sum of atoms of sensation its of color, orientation and so forth. Perception is built up of local sensations the way crystal might be built of array of atoms.