I found this interesting article this morning, that implies that people find curved objects more comforting than sharp objects. Thought it might have some relation to strategies for abstracting images for the paint synthesizer or the vectorizer based on the kind of emotional reaction the artist intends to achieve in the final result. Humans Prefer Curved Visual Objects Moshe Bar and Maital Neta Martinos Center at Massachusetts General Hospital, Harvard Medical School ABSTRACT—People constantly make snap judgments about objects encountered in the environment. Such rapid judgments must be based on the physical properties of the targets, but the nature of these properties is yet unknown. We hypothesized that sharp transitions in contour might convey a sense of threat, and therefore trigger a negative bias. Our results were consistent with this hypothesis. The type of contour a visual object possesses—whether the contour is sharp angled or curved—has a critical influence on people’s attitude toward that object.objects with a sharp-angled contour with subjective preference for the same objects when their contour was instead curved.