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Flexible Voxels for Motion-Aware Videography

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by Mohit Gupta , Amit Agrawal , Ashok Veeraraghavan , Srinivasa G. Narasimhan
Citations:17 - 7 self
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BibTeX

@MISC{Gupta_flexiblevoxels,
    author = {Mohit Gupta and Amit Agrawal and Ashok Veeraraghavan and Srinivasa G. Narasimhan},
    title = {Flexible Voxels for Motion-Aware Videography},
    year = {}
}

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Abstract

Abstract. The goal of this work is to build video cameras whose spatial and temporal resolutions can be changed post-capture depending on the scene. Building such cameras is difficult due to two reasons. First, current video cameras allow the same spatial resolution and frame rate for the entire captured spatio-temporal volume. Second, both these parameters are fixed before the scene is captured. We propose different components of video camera design: a sampling scheme, processing of captured data and hardware that offer post-capture variable spatial and temporal resolutions, independently at each image location. Using the motion information in the captured data, the correct resolution for each location is decided automatically. Our techniques make it possible to capture fast moving objects without motion blur, while simultaneously preserving high-spatial resolution for static scene parts within the same video sequence. Our sampling scheme requires a fast per-pixel shutter on the sensor-array, which we have implemented using a co-located cameraprojector system. 1

Keyphrases

motion-aware videography    flexible voxels    temporal resolution    video sequence    video camera design    fast per-pixel shutter    high-spatial resolution    post-capture depending    correct resolution    current video camera    frame rate    different component    image location    building camera    co-located cameraprojector system    post-capture variable spatial    static scene part    video camera    motion blur    captured data    spatial resolution    entire captured spatio-temporal volume    motion information   

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