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Dynamic Deep Octree for High-resolution Volumetric Painting in Virtual Reality
- Title
- Dynamic Deep Octree for High-resolution Volumetric Painting in Virtual Reality
- Authors
- Kim, Yeojin; Kim, Byungmoon; Kim, Young J.
- Ewha Authors
- 김영준
- SCOPUS Author ID
- 김영준
- Issue Date
- 2018
- Journal Title
- COMPUTER GRAPHICS FORUM
- ISSN
- 0167-7055
1467-8659
- Citation
- COMPUTER GRAPHICS FORUM vol. 37, no. 7, pp. 179 - 190
- Publisher
- WILEY
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
Proceedings Paper
- Abstract
- With virtual reality, digital painting on 2D canvas is now being extended to 3D space. In this paper, we generalize the 2D pixel canvas to a 3D voxel canvas to allow artists to synthesize volumetric color fields. We develop a deep and dynamic octree-based painting and rendering system using both CPU and GPU to take advantage of the characteristics of both processors (CPU for octree modeling and GPU for volume rendering). On the CPU-side, we dynamically adjust an octree and incrementally update the octree to GPU with low latency without compromising the frame rates of the rendering. Our octree is balanced and uses a novel 3-neighbor connectivity for format simplicity and efficient storage, while allowing constant neighbor access time in ray casting. To further reduce the GPU-side 3-neighbor computations, we precompute a culling mask in CPU and upload it to GPU. Finally, we analyze the numerical error-propagation in ray casting through high resolution octree and present a theoretical error bound.
- DOI
- 10.1111/cgf.13558
- Appears in Collections:
- 인공지능대학 > 컴퓨터공학과 > Journal papers
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