Split aperture imaging for high dynamic range

M. Aggarwal, N. Ahuja

Research output: Contribution to conferencePaper

Abstract

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 by mirrors. A sensor is place 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.

Original languageEnglish (US)
Pages10-17
Number of pages8
StatePublished - Jan 1 2001
Event8th International Conference on Computer Vision - Vancouver, BC, United States
Duration: Jul 9 2001Jul 12 2001

Other

Other8th International Conference on Computer Vision
CountryUnited States
CityVancouver, BC
Period7/9/017/12/01

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ASJC Scopus subject areas

  • Software
  • Computer Vision and Pattern Recognition

Cite this

Aggarwal, M., & Ahuja, N. (2001). Split aperture imaging for high dynamic range. 10-17. Paper presented at 8th International Conference on Computer Vision, Vancouver, BC, United States.