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Published July 20, 2016 | Supplemental Material + Published + Accepted Version
Journal Article Open

Space- and intensity-constrained reconstruction for compressed ultrafast photography


The single-shot compressed ultrafast photography (CUP) camera is the fastest receive-only camera in the world. In this Letter, we introduce an external CCD camera and a space- and intensity-constrained (SIC) reconstruction algorithm to improve the image quality of CUP. The external CCD camera takes a time-unsheared image of the dynamic scene. Unlike the previously used unconstrained algorithm, the proposed algorithm incorporates both spatial and intensity constraints based on the additional prior information provided by the external CCD camera. First, a spatial mask is extracted from the time-unsheared image to define the zone of action. Next, an intensity threshold is determined based on the similarity between the temporally projected image of the reconstructed datacube and the time-unsheared image. Both simulation and experimental studies show that the SIC reconstruction improves the spatial resolution, contrast, and general quality of the reconstructed image.

Additional Information

© 2016 Optical Society of America. Received 11 February 2016; revised 20 May 2016; accepted 21 May 2016 (Doc. ID 259326); published 30 June 2016. Funding: National Institutes of Health (NIH) (DP1 EB016986, R01 CA186567). The authors would like to thank Prof. James Ballard for reading the manuscript.

Attached Files

Published - optica-3-7-694.pdf

Accepted Version - nihms883448.pdf

Supplemental Material - optica37694v001.MP4

Supplemental Material - optica37694v002.MP4


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