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My work

Hey everyone.. I guess I should give a short update about my own research interests here.. (high time..)

I graduated from the University of Rochester. I worked there with Professor James Fienup and Professor David Williams. My thesis research was on superresolution. I used structured illumination to obtain superresolution, did some work in retinal imaging using adaptive optics and some on fluorescence microscopy. I also did some application of optical sectioning/confocal imaging using structured illumination. Involved mostly Fourier analysis, phase shift estimation and image reconstruction/processing. On the experimental side it was a lot of adaptive optics, retinal imaging and microscopy. I'm always thankful I got to do both theory and experimental work in my time at Rochester! If you are still in school.. get the most out of it!

I have also worked in digital holography, using synthetic apertures for high resolution imaging. Some of my more recent research at Ricoh Innovations Inc., is in computational optics. Our team at RII does a lot of optics + image processing work, trying to capitalize on the benefits of both in system design. My work on plenoptic systems involves formulating the optical system response and using it for lens design, implementation and novel image processing to extract high resolution and multi-modal images.Some other projects I am involved in include 3D imaging, stereo and multi-aperture systems, compressed imaging and structured light depth sensing.

Optics lab, picture credit goes to maybe Tom or Manuel
Generally I am interested in all computational optics and imaging systems, biomedical imaging and algorithms for reconstruction and data retrieval. But actually there are many things in optics-photonics/math/processing in general that can be applied to imaging. So it is always good to keep an eye out. 

Here's my LinkedIn profile: http://www.linkedin.com/pub/dir/sapna/shroff

Here are some of my publications:
  1. S. A. Shroff and K. Berkner, "Image formation analysis and high resolution image reconstruction for plenoptic imaging systems," Appl. Opt. 52, D22-D31 (2013) pdf
  2.  S. A. Shroff and K. Berkner, “Wave analysis of a plenoptic system and its applications,” Proc. SPIE 8667, 86671L (2013) pdf
  3. S. A. Shroff and K. Berkner, "High Resolution Image Reconstruction for Plenoptic Imaging Systems using System Response," in Computational Optical Sensing and Imaging, OSA Technical Digest (Optical Society of America, 2012), paper CM2B.2 pdf
  4. K. Berkner and S. A. Shroff, "Design framework for a spectral mask for a plenoptic camera," in Digital Photography VIII, IS&T/SPIE Electronic Imaging, (January 2012), paper 8299-9.
  5. S. A. Shroff and K. Berkner, "Defocus Analysis for a Coherent Plenoptic System," in Frontiers in Optics, OSA Technical Digest (Optical Society of America, 2011), paper FThR6. pdf
  6. K. Berkner and S. Shroff, "Optimization of Spectrally Coded Mask for Multi-modal Plenoptic Camera," in Computational Optical Sensing and Imaging, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CMD4 pdf
  7. A. E. Tippie, S. A. Shroff, and J. R. Fienup, "Improved Aperture Synthesis for Digital Holography," in Frontiers in Optics, OSA Technical Digest (CD) (Optical Society of America, 2010), paper FThK2 pdf
  8. Sapna A. Shroff, James R. Fienup, and David R. Williams, "Lateral superresolution using a posteriori phase shift estimation for a moving object: experimental results," J. Opt. Soc. Am. A 27, 1770-1782 (2010) pdf
  9. Sapna A. Shroff, "Structured Illumination Imaging", Thesis (Ph.D.) University of Rochester (2010) pdf
  10. Sapna A. Shroff, James R. Fienup, and David R. Williams, "Phase-shift estimation in sinusoidally illuminated images for lateral superresolution," J. Opt. Soc. Am. A 26, 413-424 (2009) pdf
  11. S. A. Shroff, J. R. Fienup, and D. R. Williams, "OTF compensation in structured illumination superresolution images," Proc. SPIE  Optics and Photonics, Unconventional Imaging, 7094-1, San Diego (August 2008), (Invited) pdf
  12. S. A. Shroff and J. R. Fienup, "Structured Illumination Imaging for Superresolution," Fifth Annual Charlotte Research Institute Summer Conference for Computational Imaging and Superresolution, (June 2008), (Invited)
  13. S. A. Shroff, J. R. Fienup, and D. R. Williams, "Estimation of Phase Shifts in Structured Illumination for Optically Sectioned Imaging of Moving Objects," in Frontiers in Optics, OSA Technical Digest, (Optical Society of America, 2008), paper FWW3 pdf
  14. S. A. Shroff, J. R. Fienup, and D. R. Williams, "Estimation of Phase Shifts in Structured Illumination for High Resolution Imaging," in Frontiers in Optics, OSA Technical Digest (CD) (Optical Society of America, 2007), paper FMH4 pdf
  15. S. A. Shroff, J. R. Fienup, and D. R. Williams, "Phase Shift Estimation in Structured Illumination Imaging for Lateral Resolution Enhancement," in Signal Recovery and Synthesis Topical Meetings on CD-ROM, OSA Technical Digest (CD) (Optical Society of America, 2007), paper SMA2 pdf
  16. S. Shroff, L. Chen, A. Dubra, J. R. Fienup and D. R. Williams, "Imaging the retina with structured illumination and adaptive optics," Engineering the Eye II, Galway, Ireland (2006)