C. Ware
Abstract
A geometry is described for converting hand position and orientation into six useful variables for computer input. The application is that of controlling form and color in an experimental computer “paint” program. We find that the most easily controlled parameters of hand placement are x,y and z cartesian coordinates and a twist parameter which approximates the wrist action that occurs when a dial is turned.
The two remaining parameters are horizontal and vertical wrist rotations. In order to capture these it is necessary to correct for the rotation about the elbow which naturally occurs when the hand is translated. However, these two parameters are difficult to control independently of hand translations. Computer paint “brushes” are described which allow the real-time control of size, color and position on the screen using the hand parameters described.
- Badler, N.I., Manoochehri, K.H., and Baraff, D. (1984) Multi-Dimensional Input Techniques and Articulated Figure Positioning by Multiple Constraints. Proceedings of 1986 Workshop on Interactive 3D Graphics. F. Crow and S.M. Pizar, Eds, Chapel Hill, NC, October. 151-170. Google Scholar
Digital Library
- Bolt, R.A., (1984) The Human Interface, Lifetime Learning Publications, Belmont, CA.Google Scholar
- Bleser, T.W., Sibert, J.L., and McGee, J.P., (1988) Charcoal Sketching: Returning Control to the Artist, ACM Transaction on Graphics, 7, 1, 76-81. Google ScholarDigital Library
- Buxton, W, Hill, R., and Rowley, P, (1985) Issues and Techniques in Touch-Sensitive Tablet Input. Computer Graphics, 19, 3, 215-224. Google ScholarDigital Library
- Das, B., and Grady, R.M. (1983), The normal working area in the horizontal plane. Ergonomics, 26, 449- 459.Google ScholarCross Ref
- Pheasant, S. (1986), Bodyspace: Anthropometry, Ergonomics and Design, Taylor and Francis, Philadelphia,Google Scholar
- Schmandt, C. (1983), Spatial Input, Display Correspondence in a stereoscopic Computer Graphic Workstation. Computer Graphics, 1, 3, 253-257. Google ScholarDigital Library
- Strassman, S, (1986) Hairy Brushes, Computer Graphics, 20, 4, 225-232. Google ScholarDigital Library
- Ware, C. and Jessome, D., (1988). Using the Bat: A Six-Dimensional Mouse for Object Placement., IEEE Computer Graphics and Application, (in press; November issue). Google ScholarDigital Library
Index Terms
Bat brushes: on the uses of six position and orientation parameters in a paint program
Recommendations
Bat brushes: on the uses of six position and orientation parameters in a paint program
CHI '89: Proceedings of the SIGCHI Conference on Human Factors in Computing SystemsA geometry is described for converting hand position and orientation into six useful variables for computer input. The application is that of controlling form and color in an experimental computer “paint” program. We find that the most easily controlled ...
Detail-preserving paint modeling for 3D brushes
NPAR '10: Proceedings of the 8th International Symposium on Non-Photorealistic Animation and RenderingRecent years have witnessed significant advances in 3D brush modeling and simulation in digital paint tools. Compared with traditional 2D brushes, a 3D brush can be both more intuitive and more expressive by offering an experience closer to wielding a ...
Evaluation of foot position and orientation as manipulated variables to control external knee adduction moments in leg extension training
Highlights- External knee adduction moments need to be avoided in leg extension training.
- ...
Abstract Background and ObjectiveEffective leg extension training at a leg press requires high forces, which need to be controlled to avoid training-induced damage. In order to avoid high external knee adduction moments, which are ...
Comments