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Omnidirectional stereo video using a hybrid representation

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Abstract

Compared with the traditional video, omnidirectional stereo video (ODSV) provides a larger field of view (FOV) with depth perception but makes the capturing, processing and displaying more complicated. Even though many attempts have been made to address these challenges, they leave one or more of the following problems: complicated camera rig, high latency and visible distortions. This paper presents a practical end-to-end solution based on a novel hybrid representation to solve these problems simultaneously. The proposed solution is directly from capturing to displaying, which removes the processing step, thus reducing the total time consumption and visible stitching distortions. This hybrid representation is piecewise linear about the horizontal viewing direction whose domain of definition is 0∘ to 360∘ with an assumption that the background is static, consisting of both static and moving regions. Using this representation, ODSV can be presented by omnidirectional stereo images and normal stereo pair of videos respectively. Moreover, a single panoramic camera strategy can be adopted to capture the omnidirectional stereo images in real environment and a normal binocular camera can be used to capture the stereo pair of videos. To display the ODSV, this paper presents a real-time tracking-based rendering algorithm for head mounted display (HMD). Experiments show that the proposed method is effective and cost-efficient. In contrast to state-of-the-art methods, the proposed method significantly reduces the complexity of camera rig and data amount, preserving a competitive stereo quality without visible distortions.

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Authors and Affiliations

  1. Hangzhou Dianzi University, School of Computer Science, Hangzhou, China

    Xiaofei Ai & Xiaodiao Chen

  2. Hangzhou Dianzi University, School of Media and Design, Hangzhou, China

    Yigang Wang & Hong Li

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  1. Xiaofei Ai
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  2. Yigang Wang
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  3. Xiaodiao Chen
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Correspondence to Xiaofei Ai.

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Ai, X., Wang, Y., Chen, X. et al. Omnidirectional stereo video using a hybrid representation. Multimed Tools Appl 82, 3995–4010 (2023). https://doi.org/10.1007/s11042-022-13432-8

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