PSYCH 2H03 Lecture Notes - Lecture 6: Proofreading, Simple Features, Word Lists By Frequency
10 Apr 2018
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Bottom-up and top-down processes both contribute to pattern recognition. Once the form has been organized by our perceptual system, we then need to identify the object: ex. What parts belong together, what is figure and what is ground. Ambiguous at the feature and letter levels. What happens when the pattern recognition system is damaged: object agnosia, apperceptive agnosia (perceptual representation, associative agnosia (identification; meaning, prosopagnosia or face blindness (unable to recognize identity of faces) In many cases you can tell it is a face but not who it belongs to. Pattern recognition and form perception: template matching, feature analysis, componential/structural approach. Template-matching calculates a correlation between the input and the template to indicate degrees of fit. Calculates a correlation between the input and the template to indicate degrees of fit: however, the visual system is capable of recognizing a huge variety of stimuli that would not pass such a test. Template-(cid:373)at(cid:272)hi(cid:374)g is(cid:374)"t po(cid:449)erful e(cid:374)ough for ge(cid:374)eral o(cid:271)je(cid:272)t re(cid:272)og(cid:374)itio(cid:374)
