Abstract
Both three dimensional (3D) and multi-view video technologies have made noticeable progress and become more popular in recent years. 3D video expands the user's experience beyond the conventional 2D video by adding the sensation of depth, while multi-view video shows the same scenery from different viewpoints. In both cases, huge amount of data need to be compressed and transmitted, making it challenging to support heterogeneous mobile devices with limited bandwidth and processing power. Scalable Multi-view Video Coding is one of the main techniques that addresses this challenge by scaling down the video. However, in addition to conventional scalable modalities of temporal, spatial, quality, and complexity in 2D video, SMVC has many more modalities, adding a much higher dimension to the difficult decision making process in the video scalability engine. In this paper, we use Grounded Theory to systematically extract various scalable modalities in multi-view 3D video and we find, in addition to some known modalities, some new modalities specifically for mobile multi-view 3D video. The usefulness of these scalable modalities in applications specific to mobile multi-view 3D video are also shown.
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