1. The Perceptual Problem in Contour Interpretation
- Author
-
B. F. Lock and T. L. C. Griffin
- Subjects
business.industry ,media_common.quotation_subject ,Regular polygon ,Image (mathematics) ,Interpretation (model theory) ,Contour line ,Perception ,Texture gradient ,Computer vision ,Artificial intelligence ,business ,Earth-Surface Processes ,Mathematics ,media_common - Abstract
Map-users often fail to obtain an accurate visual image of relief form from contour maps, though little is known about the specific problems experienced. A multiple-choice questionnaire given to 701 subjects concentrated upon the ability to identify different types of slope on contour diagrams. Conceptual difficulty existed, but the failure to judge the relative steepness of slope along convex profiles was best explained by recourse to perceptual error. It is concluded that this may be related to Gibson's texture gradient effect.
- Published
- 1979