This report covers a master’s thesis project done at the University Of Utah for theOpenSpace project. OpenSpace is a open-source astronomy visualization software and thethesis focus was to visualize the ever-increasing number of man-made space debris. Twodifferent visualization methods have been used in this thesis. One was a volume renderingand it was evaluated how it works in relation to an orbital trail representation, which wasthe other method. If the volumetric representation would reduce cluttering, is one of theaspects that will be evaluated, as well as a more open ended exploratory question whichis if the volumetric representation can provide any new insights about the data. In short,will a volumetric representation give anything that an orbital representation cannot? Avolume rendering can use different types of grids. The thesis evaluates the pros and consof a cartesian- and spherical grid, as well as the different resolution of the grid and tweaksin the transfer function.An orbital trail representation was previously implemented in OpenSpace (which will becalled the individual scene graph node implementation in this report) that had its pros.One con, however, was that it did not scale very well with increasing number of data elements.Visualizing all the data sets containing each trackable piece of space debris simultaneouslyusing this implementation causes the software to slow down significantly. Analternative implementation (which will be called single draw call implementation in thisreport) was therefore tested in hopes to solve this issue. To see the performance difference,tests were performed where frame time for the whole scene was measured.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:liu-165370 |
| Date | January 2019 |
| Creators | Fransson, Jonathan, Olsson, Elon |
| Publisher | Linköpings universitet, Medie- och Informationsteknik, Linköpings universitet, Tekniska högskolan, Linköpings universitet, Medie- och Informationsteknik, Linköpings universitet, Tekniska högskolan |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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