Billboard deformation via 3D voxel by using optimization for free-viewpoint system. Nonaka, K., Yao, Q., Sabirin, H., Chen, J., Sankoh, H., & Naito, S. In 2017 25th European Signal Processing Conference (EUSIPCO), pages 1500-1504, Aug, 2017.
Billboard deformation via 3D voxel by using optimization for free-viewpoint system [pdf]Paper  doi  abstract   bibtex   
A free viewpoint application has been developed that yields an immersive user experience. The free viewpoint approach called the "billboard methodis" suitable for displaying a synthesized 3D view in a mobile device, but it suffers from the limitation that a billboard cannot present an accurate impression of depth for a foreground object, and it gives users an unacceptable impression from certain virtual viewpoints. To solve this problem, we propose the optimal deformation of the billboard. The deformation is designed as a mapping of grid points in the input billboard silhouette to produce an optimal silhouette from an accurate voxel model of the object. We formulate and solve this procedure as a nonlinear optimization problem based on a grid-point constraint and some a priori information. Our results show that the optimal deformation is produced by the proposed method, which generates a synthesized virtual image having a natural appearance.
@InProceedings{8081459,
  author = {K. Nonaka and Q. Yao and H. Sabirin and J. Chen and H. Sankoh and S. Naito},
  booktitle = {2017 25th European Signal Processing Conference (EUSIPCO)},
  title = {Billboard deformation via 3D voxel by using optimization for free-viewpoint system},
  year = {2017},
  pages = {1500-1504},
  abstract = {A free viewpoint application has been developed that yields an immersive user experience. The free viewpoint approach called the {"}billboard methodis{"} suitable for displaying a synthesized 3D view in a mobile device, but it suffers from the limitation that a billboard cannot present an accurate impression of depth for a foreground object, and it gives users an unacceptable impression from certain virtual viewpoints. To solve this problem, we propose the optimal deformation of the billboard. The deformation is designed as a mapping of grid points in the input billboard silhouette to produce an optimal silhouette from an accurate voxel model of the object. We formulate and solve this procedure as a nonlinear optimization problem based on a grid-point constraint and some a priori information. Our results show that the optimal deformation is produced by the proposed method, which generates a synthesized virtual image having a natural appearance.},
  keywords = {deformation;human factors;nonlinear programming;virtual reality;immersive user experience;unacceptable impression;natural appearance;foreground object;mobile device;synthesized 3D view;free viewpoint approach;free viewpoint application;free-viewpoint system;billboard deformation;synthesized virtual image;grid-point constraint;nonlinear optimization problem;accurate voxel model;optimal silhouette;input billboard silhouette;grid points;optimal deformation;virtual viewpoints;Cameras;Three-dimensional displays;Solid modeling;Image edge detection;Computational modeling;Optimization;Europe},
  doi = {10.23919/EUSIPCO.2017.8081459},
  issn = {2076-1465},
  month = {Aug},
  url = {https://www.eurasip.org/proceedings/eusipco/eusipco2017/papers/1570345898.pdf},
}
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