Perceptual features {non-accidental feature}| {non-accidental property}, such as mass, can not depend on observation point. Non-accidental features stay constant from multiple viewpoints and under transformation, reflection, rotation, translation, and zooming. Relative feature positions stay the same.
recognition
Memory uses non-accidental properties and relative positions to make object templates for perceptual recognition.
projection
Straight edge tends to project collinear lines. Curved edge tends to project lines that fall along smooth function. Parallel edges tend to project parallel lines. Edge intersections tend to project lines that meet at point. Parts that are close together tend to project lines that are close together. Symmetrical parts tend to project symmetrical line patterns.
Social Sciences>Psychology>Cognition>Perception>Features
6-Psychology-Cognition-Perception-Features
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Date Modified: 2022.0224