A Methodical Approach to the Evaluation of Appearance Computations
| Thesis title in Czech: | Metodický přístup k evaluaci výpočtů vzhledu |
|---|---|
| Thesis title in English: | A Methodical Approach to the Evaluation of Appearance Computations |
| Key words: | spectral rendering, rendering evaluation, appearance evaluation |
| English key words: | spectral rendering, rendering evaluation, appearance evaluation |
| Academic year of topic announcement: | 2019/2020 |
| Thesis type: | diploma thesis |
| Thesis language: | angličtina |
| Department: | Department of Software and Computer Science Education (32-KSVI) |
| Supervisor: | doc. Alexander Wilkie, Dr. |
| Author: | hidden - assigned and confirmed by the Study Dept. |
| Date of registration: | 27.03.2020 |
| Date of assignment: | 27.03.2020 |
| Confirmed by Study dept. on: | 29.04.2020 |
| Date and time of defence: | 16.09.2020 09:00 |
| Date of electronic submission: | 30.07.2020 |
| Date of submission of printed version: | 30.07.2020 |
| Date of proceeded defence: | 16.09.2020 |
| Opponents: | Tobias Rittig, B.Sc., M.Sc., Ph.D. |
| Guidelines |
| Many techniques for the computation of realistic images exist, and there are a number of key technical aspects to such systems. In addition to the light transport technique which is being used, the details of how description and computation of object appearance are key distinguishing features. The details in questions span a wide range of features, such as the list of BRDF and BSSDF models which are supported in a given system, to the question whether computations are performed in colour space or in spectral form, to whether features such polarisation or fluorescence are being supported. Although there are obvious similarities between systems, there is no standardised implementation of any of these features, and their computation might vary in terms of accuracy.
Currently, whenever a researcher works on any aspect of appearance computation, they demonstrate their findings on their own set of test scenes. These scenes might not necessarily cover all test scenarios, and any possible inaccuracies might not be exposed properly. So there is a need for an appearance test suite that would assess the correctness of such computations. The goal of this thesis is to introduce such a set of scenes that can be used to methodically test rendering algorithms based on their appearance reproduction capabilities. The test scenes are created in such a manner that they examine the capabilities of the appearance computations to correctly render respective features, while neglecting other aspects of rendering, such as global illumination. With the appearance in mind, we focus on spectral rendering in general, as well as specialised forms of it, such as fluorescence, dispersion or polarisation. For various test cases, we manually verify that the reference images display proper results according to the definition of respective features. |
| References |
| Ulbricht, Christiane & Wilkie, Alexander & Purgathofer, Werner. (2006). Verification of Physically Based Rendering Algorithms. Comput. Graph. Forum. 25. 237-255. 10.1111/j.1467-8659.2006.00938.x.
Pharr, Matt, Wenzel Jakob and Greg Humphreys. Physically based rendering: from theory to implementation. Third edition. Cambridge, MA: Morgan Kaufmann Publishers/Elsevier, [2017]. ISBN 978-0-12-800645-0. Jakob, Wenzel. “Mitsuba renderer”. http://www.mitsubarenderer.org (2010). URL: http://www.mitsuba-renderer.org Wilkie, Alexander. "ART renderer" 2019 URL:https://cgg.mff.cuni.cz/ART/ |