Research. |
Group's activities in Optical Compressive Sensing and Imaging.
- Pioneering in the field of compressive 2D imaging: proposed the first single shot compressive sensing (CS) scheme (IEEE/OSA JDT 2007), CS with linear sensors (OL 2007).
- Demonstrate the first megapixels size optical compressive imaging (OpExp 2012).
- Inspired by optical phenomena and optical CS limitations, proposed the separable CS model (a.k.a. Kronecker CS) (IEEE SPL 2009).
- The first Fresnel compressive holography (IEEE/OSA JDT 2010).
- Simple and efficient compressive motion detector (AO 2012).
- Single shot super-resolution CS design (OpExp 2010).
- Holographic imaging behind partially occludes (OL 2012). This work has been chosen by the Optical Society of America (OSA) to appear in Optics and Photonic News, Optics in 2012, which summarizes the 30 most outstanding works during the year 2012.
- Miniature CS spectrometer (OL 2013).
- Ultraspectral CS imager (Nature-Sci. Rep. 2016 ; J. Imaging 2019).
- Snapshot CS hyperspectral camera (OL 2018).
- Compressive 3D + spectral imaging (OL 2016).
- Total of almost 70 publications (25 invited). Ranked #1 according to total worldwide publications on CS in the fields "optics" and "Imaging Science Photographic Technology", "spectroscopy", and "remote sensing" (accounting to 1.43% of total publications).
- Editor of the first book appeared on Optical Compressive Sensing (CRC 2016).
Compressive Spectral Imaging.In the recent years the group has demonstrated several compressive spectral imaging techniques. We have developed a compressive miniature spectral imager that is able to capture hyper and ultra-spectral images with an order of magnitude less samples compared to conventional ones. We have demonstrated 3D hyperspectral imaging.
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Deep neural network solutions for compressive sensing.
Compressive Holography.
The group has been among the pioneers in the application of compressive sensing approaches for holography. We have proposed the Fresnel compressive holography with non-uniform random sampling, derived the theoretical guidelines for compressive holography and for tomographic reconstruction. We have demonstrated holographic imaging behind occluders. Together with Prof. J. Rosen's group we have used CS techniques for incoherent holography (with MVP, S-SAFE).
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Compressive Imaging.
We proposed the first single shot compressive sensing (CS) scheme, and we developed and built various 2D compressive optical imagers. We demonstrated the first megapixels size optical compressive imaging experiment.
We have developed an optical change detection and motion tracking system that is able to detect moving objects in a scene from 3-6 orders of magnitude less samples than regular system need. |
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3D Imaging and Visualization.
We work on modeling, design and realization of coherent and incoherent 3D imaging sensing and visualization systems. Particularly we worked extensively on integral imaging (InI) schemes and 3D holography. We developed methods to design the InI sensing process and techniques to process the acquired data. Amongst others, we introduced the idea of super-resolution InI, the notion of "Perceivable Light Fields", and we demonstrated 3D InI imaging with SNR much below 1. We developed a multiview display technique that allows generation more views than regular systems do. In 3D coherent imaging we performed theoretical analysis of holography (sampling, phase space analysis), we analyzed and designed holographic microscopic techniques.
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Phase Space, Linear Canonical Transfrom.
We have used phase space analysis of optical systems. We used phase space to understand and to evaluate the performance of optical systems.
The Linear Canonical Transform describes many spatial and temporal optical systems and phenomena. We derived sampling theories for the LCT and for the offset LCT. |
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