@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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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","bibtex":"@InProceedings{8081459,\n author = {K. Nonaka and Q. Yao and H. Sabirin and J. Chen and H. Sankoh and S. Naito},\n booktitle = {2017 25th European Signal Processing Conference (EUSIPCO)},\n title = {Billboard deformation via 3D voxel by using optimization for free-viewpoint system},\n year = {2017},\n pages = {1500-1504},\n 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.},\n 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},\n doi = {10.23919/EUSIPCO.2017.8081459},\n issn = {2076-1465},\n month = {Aug},\n url = {https://www.eurasip.org/proceedings/eusipco/eusipco2017/papers/1570345898.pdf},\n}\n\n","author_short":["Nonaka, K.","Yao, Q.","Sabirin, H.","Chen, J.","Sankoh, H.","Naito, S."],"key":"8081459","id":"8081459","bibbaseid":"nonaka-yao-sabirin-chen-sankoh-naito-billboarddeformationvia3dvoxelbyusingoptimizationforfreeviewpointsystem-2017","role":"author","urls":{"Paper":"https://www.eurasip.org/proceedings/eusipco/eusipco2017/papers/1570345898.pdf"},"keyword":["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"],"metadata":{"authorlinks":{}},"downloads":0},"bibtype":"inproceedings","biburl":"https://raw.githubusercontent.com/Roznn/EUSIPCO/main/eusipco2017url.bib","creationDate":"2021-02-13T16:38:25.680Z","downloads":0,"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"],"search_terms":["billboard","deformation","via","voxel","using","optimization","free","viewpoint","system","nonaka","yao","sabirin","chen","sankoh","naito"],"title":"Billboard deformation via 3D voxel by using optimization for free-viewpoint system","year":2017,"dataSources":["2MNbFYjMYTD6z7ExY","uP2aT6Qs8sfZJ6s8b"]}