Viewpoint switching in multiview videos using SP-frames

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 ...

• Type: Conference
• Year: 2008
• Where: ICIP
• Authors: Ki-Kit Lai, Yui-Lam Chan, Chang-Hong Fu, Wan-Chi Siu
• Keywords: ICIP 2008, Image Processing, Multiview Scenario, Seamless Switching, Secondary Sp-frame Coding, Secondary Sp-frames, Viewpoint Switching