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Multiscale framework for adaptive and robust enhancement of depth in multi-view imagery

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3 Author(s)
Helgason, H. ; Sch. of Electr. Eng., KTH R. Inst. of Technol., Stockholm, Sweden ; Haopeng Li ; Flierl, M.

Depth Image Based Rendering (DIBR) is a standard technique in free viewpoint television for rendering virtual camera views. For synthesis it utilizes one or several reference texture images and associated depth images, which contain information about the 3D structure of the scene. Many popular depth estimation methods infer the depth information by considering texture images in pairs. This often leads to severe inconsistencies among multiple reference depth images, resulting in poor rendering quality. We propose a method which takes as input a set of depth images and returns an enhanced depth map to be used for rendering at the virtual viewpoint. Our framework is data-driven and based on a simple geometric multiscale model of the underlying depth. Inconsistencies and errors in the inputted depth images are handled locally using tools from the field of robust statistics. Numerical comparison shows the method outperform standard MPEG DIBR software.

Published in:

Image Processing (ICIP), 2012 19th IEEE International Conference on

Date of Conference:

Sept. 30 2012-Oct. 3 2012

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