Depth image post-processing method by diffusion

Yun Li; Mårten Sjöström; Ulf Jennehag; Roger Olsson

doi:10.1117/12.2003183

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12 March 2013 Depth image post-processing method by diffusion

Yun Li, Mårten Sjöström, Ulf Jennehag, Roger Olsson

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Proceedings Volume 8650, Three-Dimensional Image Processing (3DIP) and Applications 2013; 865003 (2013) https://doi.org/10.1117/12.2003183
Event: IS&T/SPIE Electronic Imaging, 2013, Burlingame, California, United States

Abstract

Multi-view three-dimensional television relies on view synthesis to reduce the number of views being transmitted. Arbitrary views can be synthesized by utilizing corresponding depth images with textures. The depth images obtained from stereo pairs or range cameras may contain erroneous values, which entail artifacts in a rendered view. Post-processing of the data may then be utilized to enhance the depth image with the purpose to reach a better quality of synthesized views. We propose a Partial Differential Equation (PDE)-based interpolation method for a reconstruction of the smooth areas in depth images, while preserving significant edges. We modeled the depth image by adjusting thresholds for edge detection and a uniform sparse sampling factor followed by the second order PDE interpolation. The objective results show that a depth image processed by the proposed method can achieve a better quality of synthesized views than the original depth image. Visual inspection confirmed the results.

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Yun Li, Mårten Sjöström, Ulf Jennehag, and Roger Olsson "Depth image post-processing method by diffusion", Proc. SPIE 8650, Three-Dimensional Image Processing (3DIP) and Applications 2013, 865003 (12 March 2013); https://doi.org/10.1117/12.2003183

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