David J Brady

Summary

Affiliation: Duke University Medical Center
Country: USA

Publications

  1. ncbi request reprint Compressive holography
    David J Brady
    Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
    Opt Express 17:13040-9. 2009
  2. ncbi request reprint Multiscale lens design
    David J Brady
    Department of Electrical and Computer Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
    Opt Express 17:10659-74. 2009
  3. ncbi request reprint Performance comparison of aperture codes for multimodal, multiplex spectroscopy
    Ashwin A Wagadarikar
    Duke University Fitzpatrick Institute for Photonics, Box 90291, Durham, North Carolina 27708, USA
    Appl Opt 46:4932-42. 2007
  4. doi request reprint Video-rate compressive holographic microscopic tomography
    Joonku Hahn
    Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA
    Opt Express 19:7289-98. 2011
  5. ncbi request reprint Video rate spectral imaging using a coded aperture snapshot spectral imager
    Ashwin A Wagadarikar
    Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
    Opt Express 17:6368-88. 2009
  6. ncbi request reprint Superimposed video disambiguation for increased field of view
    Roummel F Marcia
    Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
    Opt Express 16:16352-63. 2008
  7. doi request reprint Coded aperture compressive temporal imaging
    Patrick Llull
    Fitzpatrick Institute for Photonics, Department of Electrical and Computer Engineering Duke University, 129 Hudson Hall, Durham, North Carolina 27708, USA
    Opt Express 21:10526-45. 2013
  8. doi request reprint Coded aperture spectroscopy with denoising through sparsity
    Alex Mrozack
    Duke Imaging and Spectroscopy Program, Duke University Electrical Engineering Dept, PO Box 90291, Durham, NC 27708, USA
    Opt Express 20:2297-309. 2012
  9. doi request reprint Thin holographic camera with integrated reference distribution
    Joonku Hahn
    Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 50:4848-54. 2011
  10. doi request reprint Image-based registration for synthetic aperture holography
    Sehoon Lim
    Duke University Fitzpatrick Center for Photonics and Communications Systems, Durham, North Carolina 27708, USA
    Opt Express 19:11716-31. 2011

Collaborators

Detail Information

Publications26

  1. ncbi request reprint Compressive holography
    David J Brady
    Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
    Opt Express 17:13040-9. 2009
    ..Compressive measurement is particularly useful in generating multidimensional images from lower dimensional data. We demonstrate single frame 3D tomography from 2D holographic data...
  2. ncbi request reprint Multiscale lens design
    David J Brady
    Department of Electrical and Computer Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
    Opt Express 17:10659-74. 2009
    ..We present an example optical design using an 8 mm entrance pupil capable of resolving 20 megapixels...
  3. ncbi request reprint Performance comparison of aperture codes for multimodal, multiplex spectroscopy
    Ashwin A Wagadarikar
    Duke University Fitzpatrick Institute for Photonics, Box 90291, Durham, North Carolina 27708, USA
    Appl Opt 46:4932-42. 2007
    ..The SNR is least sensitive to vertical subpixel misalignments on the detector with a Hadamard-matrix-based code. Finally, the increased sensitivity of a spectrometer using a coded aperture instead of a slit is demonstrated...
  4. doi request reprint Video-rate compressive holographic microscopic tomography
    Joonku Hahn
    Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA
    Opt Express 19:7289-98. 2011
    ..The snapshot mode enables tomographic imaging of microscopic moving objects. We demonstrate video-rate tomographic image acquisition of two live water cyclopses with 5.2 μm spatial resolution and 60 μm axial resolution...
  5. ncbi request reprint Video rate spectral imaging using a coded aperture snapshot spectral imager
    Ashwin A Wagadarikar
    Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
    Opt Express 17:6368-88. 2009
    ..We utilize CASSI's snapshot ability to demonstrate a spectral image video of multi-colored candles with live flames captured at 30 frames per second...
  6. ncbi request reprint Superimposed video disambiguation for increased field of view
    Roummel F Marcia
    Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
    Opt Express 16:16352-63. 2008
    ..We show the effectiveness of this improved approach by reconstructing the constituent images of a surveillance camera video...
  7. doi request reprint Coded aperture compressive temporal imaging
    Patrick Llull
    Fitzpatrick Institute for Photonics, Department of Electrical and Computer Engineering Duke University, 129 Hudson Hall, Durham, North Carolina 27708, USA
    Opt Express 21:10526-45. 2013
    ..We discuss the compressed video's temporal resolution and present experimental results for reconstructions of > 10 frames of temporal data per coded snapshot...
  8. doi request reprint Coded aperture spectroscopy with denoising through sparsity
    Alex Mrozack
    Duke Imaging and Spectroscopy Program, Duke University Electrical Engineering Dept, PO Box 90291, Durham, NC 27708, USA
    Opt Express 20:2297-309. 2012
    ..Furthermore, ill-conditioned codes with a regularized estimation strategy are shown to perform competitively with well-conditioned codes...
  9. doi request reprint Thin holographic camera with integrated reference distribution
    Joonku Hahn
    Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 50:4848-54. 2011
    ..This paper describes and demonstrates a total internal reflection hologram that replaces the beam splitter and enables hologram recording over a large aperture with a thin camera...
  10. doi request reprint Image-based registration for synthetic aperture holography
    Sehoon Lim
    Duke University Fitzpatrick Center for Photonics and Communications Systems, Durham, North Carolina 27708, USA
    Opt Express 19:11716-31. 2011
    ..4 mm aperture synthesized by scanning a 5.28 mm subaperture over 144 transverse positions. We demonstrate 60 μm resolution at 2 m range...
  11. ncbi request reprint Static two-dimensional aperture coding for multimodal, multiplex spectroscopy
    Michael E Gehm
    Duke University Fitzpatrick Center for Photonics, Durham, North Carolina 27708, USA
    Appl Opt 45:2965-74. 2006
    ..We develop a general mathematical framework for deriving the required aperture codes and discuss several appealing code families. Experimental results validate the performance of the instrument...
  12. doi request reprint Compressive holography of diffuse objects
    Kerkil Choi
    The Fitzpatrick Institute for Photonics, Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 49:H1-10. 2010
    ..The inference is performed by a constrained optimization technique inspired by compressive sensing theory. Experimental results demonstrate and verify the performance of our estimates...
  13. doi request reprint Identification of fluorescent beads using a coded aperture snapshot spectral imager
    Christy Fernandez Cull
    Fitzpatrick Institute for Photonics and Department of Electrical and Computer Engineering, Duke University, 129 Hudson Hall, Durham, North Carolina 27708, USA
    Appl Opt 49:B59-70. 2010
    ..We also record real CASSI measurements of a ten bead type fluorescence scene and create a 2D bead identity map. A baseline image from filtered-array imaging system verifies CASSI's 2D bead identity map...
  14. doi request reprint A testbed for wide-field, high-resolution, gigapixel-class cameras
    David S Kittle
    Department of Electrical and Computer Engineering and Fitzpatrick Institute for Photonics, Box 90291, Duke University, Durham, North Carolina 27708, USA
    Rev Sci Instrum 84:053107. 2013
    ....
  15. doi request reprint Optomechanical design of multiscale gigapixel digital camera
    Hui S Son
    Electrical and Computer Engineering Department, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 52:1541-9. 2013
    ..In this paper we present the optomechanical design of a prototype two-gigapixel system (AWARE-2) that has been constructed and tested...
  16. doi request reprint Design of a spherical focal surface using close-packed relay optics
    Hui S Son
    Department of Electrical and Computer Engineering, Duke University Durham, North Carolina 27708, USA
    Opt Express 19:16132-8. 2011
    ..These properties are especially beneficial for making a continuous focal surface and results show that circle packing densities near steady-state maximum values found with other methods can be achieved...
  17. ncbi request reprint Multi-excitation Raman spectroscopy technique for fluorescence rejection
    Scott T McCain
    Department of Electrical and Computer Engineering, Fitzpatrick Institute for Photonics, DukeUniversity, Durham, North Carolina 27708, USA
    Opt Express 16:10975-91. 2008
    ..In situations where the intense fluorescence causes significant shot noise compared to the weak Raman signals, the multi-excitation approach is more effective than non-iterative techniques such as polynomial background subtraction...
  18. doi request reprint Snapshot 2D tomography via coded aperture x-ray scatter imaging
    Kenneth P MacCabe
    Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 52:4582-9. 2013
    ..Our reconstruction algorithm also estimates the angular dependence of the scattered radiance, a step toward materials imaging and identification. ..
  19. doi request reprint Wide-field compact catadioptric telescope spanning 0.7-14 μm wavelengths
    Daniel L Marks
    Department of Electrical and Computer Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 52:4334-42. 2013
    ..We have constructed and tested prototypes of the telescopes and found the performance is near the predicted values...
  20. doi request reprint Sampling and processing for compressive holography [Invited]
    Sehoon Lim
    Duke University Fitzpatrick Center for Photonics and Communications Systems, Durham, North Carolina 27705, USA
    Appl Opt 50:H75-86. 2011
    ..We present as examples 3D tomography from a 2D hologram, 2D image reconstruction from a sparse aperture, and diffuse object estimation from diverse speckle realizations...
  21. ncbi request reprint Lightweight biometric detection system for human classification using pyroelectric infrared detectors
    John Burchett
    Fitzpatrick Center for Photonics and Communications, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 45:3031-7. 2006
    ..We propose two algorithms for person identification, a more generalized spectral clustering method and a more rigorous example that uses principal component regression to perform a blind classification...
  22. doi request reprint Compressive video sensors using multichannel imagers
    Mohan Shankar
    Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 49:B9-17. 2010
    ..These compressive sampling schemes could be implemented in the focal plane readout hardware resulting in drastic reduction in data bandwidth and computational complexity...
  23. doi request reprint Microcamera aperture scale in monocentric gigapixel cameras
    Daniel L Marks
    Department of Electrical and Computer Engineering and Fitzpatrick Institute for Photonics, Duke University, Box 90291, Durham, North Carolina 27708, USA
    Appl Opt 50:5824-33. 2011
    ..We find that microcamera aperture diameters of 3 to 12 mm paired with complementary metal oxide semiconductor sensors in the 1 to 15 megapixel range are most attractive for gigapixel-scale cameras...
  24. doi request reprint Coding for compressive focal tomography
    David J Brady
    Fitzpatrick Institute for Photonics and Department of Electrical Engineering, Duke University, Durham, North Carolina 27708, USA
    Appl Opt 50:4436-49. 2011
    ..We propose a novel strategy based on image space modulation and show that this strategy can be sensitive to high-resolution spatial features across an extended focal volume...
  25. doi request reprint Analytic-domain lens design with proximate ray tracing
    Nan Zheng
    Department of Physics, Duke University, Durham, North Carolina 27708, USA
    J Opt Soc Am A Opt Image Sci Vis 27:1791-802. 2010
    ..In addition, we have further expanded the procedure to allow asymmetric systems and arbitrary order of approximation, and have illustrated the performance of the method through three lens design examples...
  26. doi request reprint Multiframe image estimation for coded aperture snapshot spectral imagers
    David Kittle
    Fitzpatrick Institute for Photonics and Department of Electrical and Computer Engineering, Duke University, 129 Hudson Hall, Durham, North Carolina 27708, USA
    Appl Opt 49:6824-33. 2010
    ....