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Time-Constrained Photography

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by Samuel W. Hasinoff , Kiriakos N. Kutulakos Frédo Dur , William T. Freeman
Citations:14 - 3 self
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BibTeX

@MISC{Hasinoff_time-constrainedphotography,
    author = {Samuel W. Hasinoff and Kiriakos N. Kutulakos Frédo Dur and William T. Freeman},
    title = {Time-Constrained Photography},
    year = {}
}

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Abstract

Capturing multiple photos at different focus settings is a powerful approach for reducing optical blur, but how many photos should we capture within a fixed time budget? We develop a framework to analyze optimal capture strategies balancing the tradeoff between defocus and sensor noise, incorporating uncertainty in resolving scene depth. We derive analytic formulas for restoration error and use Monte Carlo integration over depth to derive optimal capture strategies for different camera designs, under a wide range of photographic scenarios. We also derive a new upper bound on how well spatial frequencies can be preserved over the depth of field. Our results show that by capturing the optimal number of photos, a standard camera can achieve performance at the level of more complex computational cameras, in all but the most demanding of cases. We also show that computational cameras, although specifically designed to improve one-shot performance, generally benefit from capturing multiple photos as well. 1.

Citations

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