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학술대회 Depth Image Based Rendering for 3D Data Service Over T-DMB
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정광희, 박영경, 김중규, 이현, 윤국진, 허남호, 김진웅
3DTV Conference (3DTV-CON) 2008, pp.237-240
07MR3300, 무안경 개인형 3D 방송기술개발, 안치득
In this paper, we present a depth image based rendering technique for 3D data service over T-DMB. 3D service over T-DMB is very attractive because the single user environment of T-DMB is suitable to glassless 3D viewing. However, the bit budget for depth transmission over T-DMB is very limited with 32Kbps for data service. Depth image based rendering can resolve this problem because the corresponding depth sequence can be compressed effectively. However, depth image based rendering has also some problems such as a large computational cost for generating virtual images and generation of holes by disocclusion. Therefore, we propose the new depth preprocessing method based on adaptive smoothing and the simultaneous method for generating an auto-stereoscopic image. In the proposed depth preprocessing method, the discontinuity preserving smoothing, followed by the adaptive smoothing based on gradient direction, is conducted by generalizing the conduction function of the anisotropic smoothing. As a result, the reduction of both bit rate required for transmission and holes is achieved. Additionally, the simultaneous method for generating an auto-stereoscopic image can resolve problems of limited memory and large computational complexity. Some experiments show that the proposed scheme can be efficiently employed for 3D data service over T-DMB. ©2008 IEEE.
KSP 제안 키워드
3D data, Adaptive smoothing, Anisotropic smoothing, Bit Rate, Computational complexity, Gradient direction, Simultaneous method, Single user, Stereoscopic image, User Environment, computational cost