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| Content Provider | ACM Digital Library |
|---|---|
| Author | England, J. N. |
| Abstract | It is often important to obtain descriptions of existing objects for computer graphics data bases. A system to aid interactive modeling (in three dimensions) of a physical object is described. The system allows a user to fit a bi-cubic parametric spline surface to an object by superimposing stereoscopic views of the computer surface with stereoscopic television views of the object. A 3-D joystick is used to manipulate surface control points while the user views the computed surface as isoparametric contours. A raster scan display polarization stereoscope is used. The left eye and right eye surface views are computed using a unique display processor designed and constructed for the evaluation of raster scan graphics techniques. The display processor consists of multiple non-pipelined concurrently operating microprogrammed modules. The computation of the two reasonably complex images (>500 vectors each) takes less than 33 msec allowing real time display at standard television rates. |
| Starting Page | 336 |
| Ending Page | 340 |
| Page Count | 5 |
| File Format | |
| ISSN | 00978930 |
| DOI | 10.1145/965139.807412 |
| Journal | ACM SIGGRAPH Computer Graphics (COMG) |
| Volume Number | 12 |
| Issue Number | 3 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1988-08-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Three-dimensional surfaces Computer graphics Stereoscopic display Computer graphics processor Display processor Raster scan graphics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science Computer Graphics and Computer-Aided Design |
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