Presentation av examensarbete för högskoleingenjörsexamen
| Titel: | Rendering av geodata med OpenGL |
| Respondent: | Marcus Ingelborn |
| Dag, Datum och Tid: | Torsdag, 2020-10-22 kl 0815-0900 i sal B och i Zoom, se länk. |
| Plats: | KTH EECS i Kista Electrum sal B och Zoom |
| Opponenter: | kontakta respondent för opponering på rapport. |
| Examinator: | Anders Sjögren, handledare: Leif Lindbäck (KTH) |
| Språk: | Muntligt på svenska, frågor kan ställas på engelska |
| Anmälan: | Anmälan för lyssnarnärvaro behövs ej för besökare. |
Abstract
This study investigated the posibility to use OpenGL, for hardware acceleration, in order to reduce the rendering time of geographical data. Specically when a part of the data is under constant change and it can't be assumed that one frame is equal to the next.
To answer this question a test enviorment at the company Saab AB was used along with the open source software Geotools. An action research was conducted where a new rendering module was implementet for Geotools. The new module was tested and compared to the previous one, from Geotools, with statistical methods.
The average redering time for one frame in the prevoius module took between 480ms and 495 ms with a probability of 99.9%. The average rendering time for one frame in the new module took between 145 ms and 150ms with the same probability. Within a confidence interval of 99.9% the mean rendering was
reduced with between 332 ms and 347 ms.
Keywords OpenGL; Geodata; Geotools; 2D-rendering; Hardware acceleration