1/28/2004   slide 29
Rule 19 + 20: Figures (and their Borders) have more “salient parts” (i.e., protuberances) than backgrounds.
•Rules 17 and 18: salience of a cusp increases with angle at cusp and salience of a smooth boundary increases with magnitude of curvature
–I.e., the more spiky and protruding, the more likely to be “figure” vs. “ground”
•“Choose figure and ground so that figure has “more salient parts” (rule 20, [Hoffman 1998 p102])
Title: Composition
Helps explain why some things are “figures” to us and others “ground”.

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