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Conference Paper
Depth Image Processing for DIBR-based 3D Mobile Broadcasting Service
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- Authors
- Kwang Hee Jung, Gwang Soon Lee, Nam Ho Hur, Jin Woong Kim, Sung Hyun Choi, Hyung Seok Kim, Joong Kyu Kim
- Issue Date
- 2009-12
- Citation
- International 3D Stereo Film and Technology Festival 2009, pp.1-4
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we present a depth image based rendering (DIBR) technique for 3D mobile broadcasting service including Terrestrial-Digital Multimedia Broadcasting (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 through the data service channel. 3D service over T-DMB based on DIBR technique can be one of the solutions to meet such requirements because the allowed bit-rates of the depth image with DIBR scheme is less than additional video bit-rates of another 3D format, while keeping 3D quality and guaranteeing backward-compatibility with T-DMB. However, DIBR has also some problems such as a generation of holes by dis-occlusion. To resolve this problem, we propose a new depth image preprocessing method based on histogram based K-means clustering and gradient direction based smoothing. By using the K-means clustering and gradient direction based smoothing, we reduce undesired hole and dis-occlusion regions. Some experiments show that the proposed method can be efficiently employed for 3D data service over T-DMB.
- KSP Keywords
- 3D data, 3D quality, Bit rate, Depth image processing, Image Preprocessing, Image processing(IP), K-Means Clustering, Mobile Broadcasting, Single user, Terrestrial-digital multimedia broadcasting(T-DMB), User environment