Fundamentals of interactive computer graphics
Fundamentals of interactive computer graphics
Illumination for computer generated pictures
Communications of the ACM
Models of light reflection for computer synthesized pictures
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
A reflectance model for computer graphics
SIGGRAPH '81 Proceedings of the 8th annual conference on Computer graphics and interactive techniques
A fast scan-line algorithm for rendering parametric surfaces
SIGGRAPH '79 Proceedings of the 6th annual conference on Computer graphics and interactive techniques
An experimental evaluation of computer graphics imagery
ACM Transactions on Graphics (TOG)
On the parameters of human visual performance: an investigation of the benefits of antialiasing
CHI '87 Proceedings of the SIGCHI/GI Conference on Human Factors in Computing Systems and Graphics Interface
Evaluating 3D task performance for fish tank virtual worlds
ACM Transactions on Information Systems (TOIS)
Experimental comparison of splines using the shape-matching paradigm
ACM Transactions on Graphics (TOG)
VRST '97 Proceedings of the ACM symposium on Virtual reality software and technology
ACM Transactions on Computer-Human Interaction (TOCHI)
Choosing Rendering Parameters for Effective Communication of 3D Shape
IEEE Computer Graphics and Applications
| Hi-index | 0.00 |
In the past computer graphics efforts, several researchers have demonstrated that polygon models can be used to produce images of curved surfaces that appear to be smooth and accurate. However, the authors know of no attempt to appraise such imagery by using multiple human observation ratings.The effectiveness of curved surface imagery generated from polygon models was investigated in a judgment study. Research subjects evaluated sphere model imagery derived from several polygon densities and shading procedures including flat shading, shade interpolation (Gouraud) and normal interpolation (Phong). Results of the evaluations indicated that little was gained by reducing the average polygon areas below approximately 110 pixels per polygon for spheres of 95 pixel radii displayed on a 512 x 512 resolution monitor. Evaluations for both shade and normal interpolution placed polygon image quality reasonably close to an “ideal” image. Although the evaluations indicated that normal interpolation was slightly superior to the shade interpolation, shade interpolation required significantly less computation. Most significantly, results from this study provide strong support for the notion that polygons can be used effectively to produce smooth shaded imagery of curved surface models.