Sparse Fourier Sampling in Millimeter-Wave Compressive Holography

Fernandez-Cull, Christy; Brady, David J.; Wikner, David A.; Mait, Joseph N.

doi:10.1364/biomed.2010.jma14

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2012

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Cited by 4 publications

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“…are costly. To deal with this, compressive sampling methods [4], [5] have been applied to mmW imaging which reduces the number of samples required to form an image [6], [7], [8], [9], [10], [11]. In this paper, we describe a passive mmW imaging system with extended depth-of-field that can produce images with reduced number of samples.…”

Section: Introductionmentioning

confidence: 99%

Passive millimeter-wave imaging with extended depth of field and sparse data

Patel

Mait

2012

2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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In this paper, we introduce a new millimeter wave imaging modality with extended depth-of-field that provides diffraction limited images based on a significant reduction in scan-time. The technique uses a cubic phase element in the pupil of the system and a nonlinear recovery algorithm to produce images that are insensitive to object distance. We present experimental results that validate system performance and demonstrate a greater than four-fold increase in depth-of-field with a reduction in scan-time by a factor of at least two.Index Terms-Computational imaging, millimeter wave imaging, extended depth-of-field, image reconstruction, sparsity.

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