Bat Brushes: On the uses of six position and orientation parameters in a paint program
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.
Department
Center for Coastal and Ocean Mapping
Publication Date
3-1-1989
Volume
CHI '89
Journal Title
Proceedings of the SIGCHIGI Conference on Human Factors in Computing Systems and Graphics Interface
Pages
155-160
Conference Date
Apr 30 - May 5, 1989
Publisher Place
Austin, TX, USA
Publisher
Association for Computing Machinery (ACM)
Digital Object Identifier (DOI)
10.1145/67449.67482
Document Type
Conference Proceeding
Recommended Citation
C. Ware and C. Baxter, "Bat brushes: On the uses of six position and orientation parameters in a paint program," in Proceedings of the SIGCHI conference on Human factors in computing systems Wings for the mind - CHI ’89, Association for Computing Machinery (ACM), 1989.