High dynamic range panoramic imaging

M. Aggarwal, Narendra Ahuja

Research output: Contribution to conferencePaper

Abstract

Most imaging sensors have a limited dynamic range and hence can satisfactorily respond to only a part of illumination levels present in a scene. This is particularly disadvantageous for omnidirectional and panoramic cameras since larger fields of view have larger brightness ranges. We propose a simple modification to existing high resolution omnidirectional/panoramic cameras in which the process of increasing the dynamic range is coupled with the process of increasing the field of view. This is achieved by placing a graded transparency (mask) in front of the sensor which allows every scene point to be imaged under multiple exposure settings as the camera pans, a process anyway required to capture large fields of view at high resolution. The sequence of images are then mosaiced to construct a high resolution, high dynamic range panoramic/omnidirectional image. Our method is robust to alignment errors between the mask and the sensor grid and does not require the mask to be placed on the sensing surface. We have designed a panoramic camera with the proposed modifications and have discussed various theoretical and practical issues encountered in obtaining a robust design. We show with an example of high resolution, high dynamic range panoramic image obtained from the camera we designed.

Original languageEnglish (US)
Pages2-9
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). High dynamic range panoramic imaging. 2-9. Paper presented at 8th International Conference on Computer Vision, Vancouver, BC, United States.