Most imaging sensors have limited dynamic range and hence are sensitive to only a part of the illumination range present in a natural scene. The dynamic range can be improved by acquiring multiple images of the same scene under different exposure settings and then combining them. In this paper, we describe a camera design for simultaneously acquiring multiple images of the same scene under different exposure settings. The cross-section of the incoming beam from a scene point is partitioned into as many parts as the desired degree of split. This is done by splitting the aperture into multiple parts and directing the light exiting from each in a different direction using an assembly of mirrors. A sensor is placed in the path of each beam and exposure of each sensor is controlled either by appropriately setting its exposure parameter, or by splitting the incoming beam unevenly. The resulting multiple exposure images are used to construct a high dynamic range image. We have implemented a video-rate camera based on this design and the results obtained are presented.


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    Title :

    Split aperture imaging for high dynamic range


    Contributors:
    Aggarwal, M. (author) / Ahuja, N. (author)


    Publication date :

    2001-01-01


    Size :

    1126131 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Split Aperture Imaging for High Dynamic Range

    Aggarwal, M. / Ahuja, N. | British Library Online Contents | 2004


    Split Aperture Imaging for High Dynamic Range

    Aggarwal, M. / Ahuja, N. / IEEE | British Library Conference Proceedings | 2001



    High dynamic range panoramic imaging

    Aggarwal, M. / Ahuja, N. | IEEE | 2001


    High Dynamic Range Panoramic Imaging

    Aggarwal, M. / Ahuja, N. / IEEE | British Library Conference Proceedings | 2001