Dr. Tianqi Zhao Profile

Dr. Tianqi Zhao

at Beijing Univ of Posts and Telecommunications

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Author

Publications (8)

Proceedings Article | 24 November 2014 Paper

An adaptive point tracking method based on depth map for 2D-3D video conversion

Yangdong Liu, Xinzhu Sang, Tianqi Zhao, Xunbo Yu, Guozhong Shi, Jing Liu

Proceedings Volume 9301, 93012G (2014) https://doi.org/10.1117/12.2072652

KEYWORDS: Volume rendering, Video, 3D displays, Cameras, 3D image processing, Statistical analysis, Visualization, 3D applications, Statistical modeling, Display technology

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Proceedings Article | 11 November 2014 Paper

Glasses-free large size high-resolution three-dimensional display based on the projector array

Xinzhu Sang, Peng Wang, Xunbo Yu, Tianqi Zhao, Xing Gao, Shujun Xing, Chongxiu Yu, Daxiong Xu

Proceedings Volume 9271, 92710Q (2014) https://doi.org/10.1117/12.2072286

KEYWORDS: 3D displays, Projection systems, 3D image processing, Holography, Video, Displays, Cameras, Eye, Multiplexing, 3D modeling

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Proceedings Article | 20 August 2013 Paper

Real-time arbitrary view synthesis method for ultra-HD auto-stereoscopic display

Yuanfa Cai, Xinzhu Sang, Chen Duo, Tianqi Zhao, Xin Fan, Nan Guo, Xunbo Yu, Binbin Yan

Proceedings Volume 8913, 891309 (2013) https://doi.org/10.1117/12.2032607

KEYWORDS: 3D displays, 3D image processing, Image processing, Video, LCDs, Lenticular lenses, Video acceleration, OpenGL, Cameras, 3D vision

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Proceedings Article | 20 August 2013 Paper

High-immersion three-dimensional display of the numerical computer model

Shujun Xing, Xunbo Yu, Tianqi Zhao, Yuanfa Cai, Duo Chen, Zhidong Chen, Xinzhu Sang

Proceedings Volume 8913, 89130N (2013) https://doi.org/10.1117/12.2033160

KEYWORDS: 3D displays, Cameras, 3D modeling, Computer simulations, Computing systems, Systems modeling, Coded apertures, Imaging systems, 3D visualizations, Visualization

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High-immersion three-dimensional (3D) displays making them valuable tools for many applications, such as designing and constructing desired building houses, industrial architecture design, aeronautics, scientific research, entertainment, media advertisement, military areas and so on. However, most technologies provide 3D display in the front of screens which are in parallel with the walls, and the sense of immersion is decreased. To get the right multi-view stereo ground image, cameras’ photosensitive surface should be parallax to the public focus plane and the cameras’ optical axes should be offset to the center of public focus plane both atvertical direction and horizontal direction. It is very common to use virtual cameras, which is an ideal pinhole camera to display 3D model in computer system. We can use virtual cameras to simulate the shooting method of multi-view ground based stereo image. Here, two virtual shooting methods for ground based high-immersion 3D display are presented. The position of virtual camera is determined by the people's eye position in the real world. When the observer stand in the circumcircle of 3D ground display, offset perspective projection virtual cameras is used. If the observer stands out the circumcircle of 3D ground display, offset perspective projection virtual cameras and the orthogonal projection virtual cameras are adopted. In this paper, we mainly discussed the parameter setting of virtual cameras。The Near Clip Plane parameter setting is the main point in the first method, while the rotation angle of virtual cameras is the main point in the second method. In order to validate the results, we use the D3D and OpenGL to render scenes of different viewpoints and generate a stereoscopic image. A realistic visualization system for 3D models is constructed and demonstrated for viewing horizontally, which provides high-immersion 3D visualization. The displayed 3D scenes are compared with the real objects in the real world.

Proceedings Article | 30 November 2012 Paper

A fast mode decision algorithm for multiview auto-stereoscopic 3D video coding based on mode and disparity statistic analysis

Cong Ding, Xinzhu Sang, Tianqi Zhao, Binbin Yan, Junmin Leng, Jinhui Yuan, Ying Zhang

Proceedings Volume 8558, 85580P (2012) https://doi.org/10.1117/12.999409

KEYWORDS: Reconstruction algorithms, Computer programming, Video coding, Statistical analysis, Video, Video surveillance, 3D displays, Motion estimation, Optimization (mathematics), Video compression

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Proceedings Article | 26 November 2012 Paper

Binocular and multi-view parallax images acquisition for three dimensional stereoscopic displays

Hongsheng Ge, Xinzhu Sang, Tianqi Zhao, Jinhui Yuan, Junmin Leng, Ying Zhang, Binbin Yan

Proceedings Volume 8556, 855607 (2012) https://doi.org/10.1117/12.981964

KEYWORDS: Cameras, 3D displays, Imaging systems, Stereoscopic displays, 3D image processing, Autostereoscopic displays, Distortion, Image acquisition, 3D acquisition, Visualization

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Proceedings Article | 17 November 2010 Paper

Fabrication of photonic crystals using holography and study for the lattice constant changes

Jing Han, He-ling Zhang, Tian-qi Zhao

Proceedings Volume 7848, 78481V (2010) https://doi.org/10.1117/12.868785

KEYWORDS: Photonic crystals, Holography, Modulation, Optical simulations, Refractive index, Polarization, Computer simulations, MATLAB, Glasses, Device simulation

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Proceedings Article | 16 November 2010 Paper

The technology of multiuser large display area and auto free-viewing stereoscopic display

Tian-Qi Zhao, He-Ling Zhang, Jing Han

Proceedings Volume 7852, 785207 (2010) https://doi.org/10.1117/12.869976

KEYWORDS: Stereoscopic displays, Fresnel lenses, Eye, Light emitting diodes, LCDs, Visualization, LED displays, Light sources, 3D image processing, 3D displays

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Showing 5 of 8 publications

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