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Title: Viewpoint switching in multiview videos using SP-frames
Authors: Lai, Ki-kit
Chan, Yui-lam
Fu, Chang-hong
Siu, Wan-chi
Subjects: Multiview
Viewpoint switching
Motion estimation
Issue Date: 2008
Publisher: IEEE
Source: ICIP 2008 : 2008 IEEE International Conference on Image Processing : proceedings : October 12-15, 2008, San Diego, California, U.S.A., p. 1776-1779.
Abstract: The distinguishing feature of multiview video lies in the interactivity, which allows users to select their favourite viewpoint. It switches bitstream at a particular view when necessary instead of transmitting all the views. The new SP-frame in H.264 is originally developed for multiple bit-rate streaming with the support of seamless switching. The SP-frame can also be directly employed in the viewpoint switching of multiview videos. Notwithstanding the guarantee of seamless switching using SPframes, the cost is the bulky size of secondary SP-frames. This induces a significant amount of additional space or bandwidth for storage or transmission, especially for the multiview scenario. For this reason, a new motion estimation and compensation technique operating in the quantized transform (QDCT) domain is designed for coding secondary SP-frame in this paper. Our proposed work aims at keeping the secondary SP-frames as small as possible without affecting the size of primary SP-frames by incorporating QDCT-domain motion estimation and compensation in the secondary SP-frame coding. Simulation results show that the size of secondary SP-frames can be reduced remarkably in viewpoint switching.
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Type: Conference Paper
DOI: 10.1109/ICIP.2008.4712120
ISBN: 978-1-4244-1764-3
Appears in Collections:EIE Conference Papers & Presentations

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