IEEE Trans Vis Comput Graph - Verifying Volume Rendering Using Discretization Error Analysis.

Tópicos

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Resumo

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.

Resumo Limpo

propos approach verif volum render correct base analysi volum render integr basi dvr algorithm respect common discret continu model riemann summat make assumpt impact paramet chang render result deriv converg curv describ expect behavior specif progress refin number sampl along ray grid size pixel size evalu error observ refin compar expect approxim error deriv theoret foundat verif approach explain realiz practic discuss limit also report error identifi approach appli two publiclyavail volum render packag

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