Verifying Volume Rendering Using Discretization Error Analysis
| Autor: | Luis Gustavo Nonato, Cláudio T. Silva, Anders Ynnerman, Carlos Scheidegger, Timo Ropinski, Robert M. Kirby, João Luiz Dihl Comba, Daniel Jönsson, Tiago Etiene |
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| Rok vydání: | 2014 |
| Předmět: |
Theoretical computer science
Pixel Discretization business.industry Continuous modelling Computer science 020206 networking & telecommunications 020207 software engineering Volume rendering 02 engineering and technology Computer Graphics and Computer-Aided Design Rendering equation Rendering (computer graphics) Discretization errors volume rendering verifiable visualization verification testing Data visualization Unbiased rendering Teknik och teknologier OTIMIZAÇÃO COMBINATÓRIA Signal Processing 0202 electrical engineering electronic engineering information engineering Engineering and Technology Computer Vision and Pattern Recognition business Algorithm Software |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1077-2626 |
| DOI: | 10.1109/tvcg.2013.90 |
| Popis: | We propose an approach for verification of volume rendering correctness based on an analysis of the volume rendering integral, the basis of most DVR algorithms. With respect to the most common discretization of this continuous model (Riemann summation), we make assumptions about the impact of parameter changes on the rendered results and derive convergence curves describing the expected behavior. Specifically, we progressively refine the number of samples along the ray, the grid size, and the pixel size, and evaluate how the errors observed during refinement compare against the expected approximation errors. We derive the theoretical foundations of our verification approach, explain how to realize it in practice, and discuss its limitations. We also report the errors identified by our approach when applied to two publicly available volume rendering packages. |
| Databáze: | OpenAIRE |
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