Vision can recognize geometric features {shape, pattern} {pattern, features}.
lines
Shapes have lines, line orientations, and edges. Contour outlines indicate objects and enhance brightness and contrast. Irregular contours and hatching indicate movement. Contrast enhances contours, for example with Mach bands. Contrast differences divide large surfaces into parts.
axes
Shapes have natural position axes, such as vertical and horizontal, and natural shape axes, such as long axis and short axis. Vision uses horizontal, vertical, and radial axes for structure and composition.
relations
Objects are wholes and have parts. Wholes are part integrations or configurations and are about gist. Parts are standard features and are about details.
surfaces
Shape has surfaces, with surface curvatures, orientations, and vertices. Visual system can label lines and surfaces as convex, concave, or overlapping [Grunewald et al., 2002]. Shapes have shape-density functions, with projections onto axes or chords [Grunewald et al., 2002]. Shapes have distances and natural metrics, such as lines between points.
illuminance
Shapes have illuminance and reflectance.
Consciousness>Consciousness>Sense>Vision>Pattern Recognition>Shape
1-Consciousness-Sense-Vision-Pattern Recognition-Shape
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Date Modified: 2022.0224