Title: | Improved gradient estimation methods for rendering of volume data |
Authors: | Ježek, Bruno Antoš, Karel |
Citation: | WSCG '2003: Posters: The 11-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2003, 3.-7. February 2003, Plzen, p. 61-64. |
Issue Date: | 2003 |
Publisher: | UNION Agency |
Document type: | konferenční příspěvek conferenceObject |
URI: | http://wscg.zcu.cz/wscg2003/Papers_2003/E13.pdf http://hdl.handle.net/11025/1023 |
ISBN: | 80-903100-2-8 |
Keywords: | vizualizace voxelu;odhad přechodu;objemové vykreslování;povrchové vykreslování |
Keywords in different language: | voxel visualization;gradient estimation;volume rendering;surface rendering |
Abstract: | The paper presents two methods that improve gradient estimation in 3D voxel space. The gradient estimation is an important step in the rendering and shading process to obtain realistic and smooth final images of visualized objects. The most used gradient estimation methods, gray-level gradient methods, Z-buffer gradient methods and binary gradient methods in some cases produce artifacts that appear as dark areas and staircase structures in a final image. To deal with the problem, two new methods for gradient estimation are suggested, the reverse gradient method and the angle difference method. The new methods were tested and compared with other gradient estimation methods. Measurements, which have been made on both the data and image levels, have shown that both developed methods improve the quality of volume data rendering. |
Rights: | © UNION Agency |
Appears in Collections: | WSCG '2003: Posters |
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11025/1023
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