Modem, Sudhakar and Vupparaboina, K K and Jana, Soumya
(2013)
Parameterized estimation of common motion for image and depth sequences.
In: National Conference on Communications (NCC), 15-17 Feb. 2013, New Delhi, India.
Abstract
Representation of 3D video using reference image and depth map sequences (2D+depth) has become standard. Although standards recommend separate encoding of image and depth, exploitation of their correlation opens up opportunities, especially for low-bit-rate applications. To this end, a common motion vector is sometimes used to compensate both the sequences. In this context, we propose a parametric method for estimation of common motion that improves upon the current image-based approach. Specifically, we identify statistical redundancy between image and depth sequences, demonstrate how the said redundancy cannot fully be exploited by a technique based on image sequences alone, and then propose a method to remove such redundancy in an optimized manner. Finally, we demonstrate the efficacy of our technique using well-known stereoscopic video sequences.
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