Joshua Rapp

Joshua Rapp
  • Biography

    Josh's research lies at the intersection of optics, electronics, signal processing, and computer vision. His doctoral thesis investigated probabilistic models to improve the performance of single-photon lidar under real-world conditions. Prior to joining MERL, Josh was a postdoctoral researcher at Stanford University. He received a Best Student Paper award at the IEEE International Conference on Image Processing (ICIP) in 2018 and the IEEE SPS Young Author Best Paper award in 2020. His current research interests include computational imaging, statistical signal processing, and active sensing methods.

  • Recent News & Events

    •  TALK    [MERL Seminar Series 2022] Beyond the First Portrait of a Black Hole
      Date & Time: Tuesday, February 15, 2022; 1:00 PM EST
      Speaker: Katie Bouman, California Institute of Technology
      MERL Host: Joshua Rapp
      Research Area: Computational Sensing
      Abstract
      • As imaging requirements become more demanding, we must rely on increasingly sparse and/or noisy measurements that fail to paint a complete picture. Computational imaging pipelines, which replace optics with computation, have enabled image formation in situations that are impossible for conventional optical imaging. For instance, the first black hole image, published in 2019, was only made possible through the development of computational imaging pipelines that worked alongside an Earth-sized distributed telescope. However, remaining scientific questions motivate us to improve this computational telescope to see black hole phenomena still invisible to us and to meaningfully interpret the collected data. This talk will discuss how we are leveraging and building upon recent advances in machine learning in order to achieve more efficient uncertainty quantification of reconstructed images as well as to develop techniques that allow us to extract the evolving structure of our own Milky Way's black hole over the course of a night, perhaps even in three dimensions.
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  • Awards

    •  AWARD    Joshua Rapp wins Best Dissertation Award from the IEEE Signal Processing Society
      Date: December 20, 2021
      Awarded to: Joshua Rapp
      MERL Contact: Joshua Rapp
      Research Areas: Computational Sensing, Signal Processing
      Brief
      • Joshua Rapp has won the 2021 Best PhD Dissertation Award from the IEEE Signal Processing Society.
        The award recognizes a PhD thesis completed on a signal processing subject within the past three years for its relevant work in signal processing while stimulating further research in the field.

        Dr. Rapp completed his PhD at Boston University in 2020 with a thesis entitled "Probabilistic Modeling for Single-Photon Lidar." The dissertation tackles challenges of the acquisition and processing of 3D depth maps reconstructed from time-of-flight data captured one photon at a time.
        The award will be presented at the 2022 IEEE International Conference on Image Processing (ICIP) in France.
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    See All Awards for MERL
  • Internships with Joshua

    • ST1916: Lidar Architectures & Algorithms

      MERL is seeking a motivated intern to develop algorithms for novel lidar systems. The ideal candidate would be a senior PhD student with a strong foundation in at least some of the following areas: statistical signal processing, stochastic processes, estimation, sampling theory. Hands-on experience with lidar systems, lasers, photodetectors, or other optics hardware is a bonus. Strong programming skills in MATLAB or Python are essential. Publication of the results produced during our internships is expected. Duration is anticipated to be 3 months.

    See All Internships at MERL
  • MERL Publications

    •  Rapp, J., Mansour, H., Boufounos, P.T., Orlik, P.V., Koike-Akino, T., Parsons, K., "Maximum Likelihood Surface Profilometry via Optical Coherence Tomography", IEEE International Conference on Image Processing (ICIP), DOI: 10.1109/​ICIP46576.2022.9897247, September 2022, pp. 1561-1565.
      BibTeX TR2022-117 PDF
      • @inproceedings{Rapp2022sep,
      • author = {Rapp, Joshua and Mansour, Hassan and Boufounos, Petros T. and Orlik, Philip V. and Koike-Akino, Toshiaki and Parsons, Kieran},
      • title = {Maximum Likelihood Surface Profilometry via Optical Coherence Tomography},
      • booktitle = {IEEE International Conference on Image Processing (ICIP)},
      • year = 2022,
      • pages = {1561--1565},
      • month = sep,
      • doi = {10.1109/ICIP46576.2022.9897247},
      • issn = {978-1-6654-9620-9},
      • isbn = {2381-8549},
      • url = {https://www.merl.com/publications/TR2022-117}
      • }
  • Other Publications

    •  Joshua Rapp, Yanting Ma, Robin Dawson and Vivek Goyal, "High-Flux Single-Photon Lidar", Optica, Vol. 8, No. 1, pp. 30-39, 2021.
      BibTeX External
      • @Article{Rapp2021,
      • author = {Rapp, Joshua and Ma, Yanting and Dawson, Robin and Goyal, Vivek},
      • title = {High-Flux Single-Photon Lidar},
      • journal = {Optica},
      • year = 2021,
      • volume = 8,
      • number = 1,
      • pages = {30--39},
      • url = {https://doi.org/10.1364/OPTICA.403190}
      • }
    •  Joshua Rapp, Robin M A Dawson and Vivek K Goyal, "Dithered depth imaging", Opt. Express, Vol. 28, No. 23, pp. 35143-35157, November 2020.
      BibTeX External
      • @Article{Rapp2020dither,
      • author = {Rapp, Joshua and Dawson, Robin M A and Goyal, Vivek K},
      • title = {Dithered depth imaging},
      • journal = {Opt. Express},
      • year = 2020,
      • volume = 28,
      • number = 23,
      • pages = {35143--35157},
      • month = nov,
      • url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-28-23-35143}
      • }
    •  Joshua Rapp, Charles Saunders, Julián Tachella, John Murray-Bruce, Yoann Altmann, Jean-Yves Tourneret, Stephen McLaughlin, Robin M. A. Dawson, Franco N. C. Wong and Vivek K. Goyal, "Seeing Around Corners with Edge-Resolved Transient Imaging", Nature Communications, Vol. 11, pp. 5929, November 2020.
      BibTeX External
      • @Article{Rapp2020nlos,
      • author = {Rapp, Joshua and Saunders, Charles and Tachella, Juli├ín and Murray-Bruce, John and Altmann, Yoann and Tourneret, Jean-Yves and McLaughlin, Stephen and Dawson, Robin M. A. and Wong, Franco N. C. and Goyal, Vivek K.},
      • title = {Seeing Around Corners with Edge-Resolved Transient Imaging},
      • journal = {Nature Communications},
      • year = 2020,
      • volume = 11,
      • pages = 5929,
      • month = nov,
      • url = {http://www.nature.com/articles/s41467-020-19727-4}
      • }
    •  Joshua Rapp, Julian Tachella, Yoann Altmann, Stephen McLaughlin and Vivek K Goyal, "Advances in Single-Photon Lidar for Autonomous Vehicles: Working Principles, Challenges, and Recent Advances", IEEE Signal Processing Magazine, Vol. 37, No. 4, pp. 62-71, July 2020.
      BibTeX External
      • @Article{Rapp2020spm,
      • author = {Rapp, Joshua and Tachella, Julian and Altmann, Yoann and McLaughlin, Stephen and Goyal, Vivek K},
      • title = {Advances in Single-Photon Lidar for Autonomous Vehicles: Working Principles, Challenges, and Recent Advances},
      • journal = {IEEE Signal Processing Magazine},
      • year = 2020,
      • volume = 37,
      • number = 4,
      • pages = {62--71},
      • month = jul,
      • url = {https://ieeexplore.ieee.org/document/9127841/}
      • }
    •  Joshua Rapp, Yanting Ma, Robin M. A. Dawson and Vivek K. Goyal, "Dead Time Compensation for High-Flux Ranging", IEEE Transactions on Signal Processing, October 2019.
      BibTeX External
      • @Article{Rapp2018c,
      • author = {Rapp, Joshua and Ma, Yanting and Dawson, Robin M. A. and Goyal, Vivek K.},
      • title = {Dead Time Compensation for High-Flux Ranging},
      • journal = {IEEE Transactions on Signal Processing},
      • year = 2019,
      • month = oct,
      • url = {https://ieeexplore.ieee.org/document/8705308/}
      • }
    •  Joshua Rapp, Robin M. A. Dawson and Vivek K Goyal, "Estimation From Quantized Gaussian Measurements: When and How to Use Dither", IEEE Transactions on Signal Processing, Vol. 67, No. 13, pp. 3424-3438, July 2019.
      BibTeX
      • @Article{Rapp2018d,
      • author = {Rapp, Joshua and Dawson, Robin M. A. and Goyal, Vivek K},
      • title = {Estimation From Quantized Gaussian Measurements: When and How to Use Dither},
      • journal = {IEEE Transactions on Signal Processing},
      • year = 2019,
      • volume = 67,
      • number = 13,
      • pages = {3424--3438},
      • month = jul
      • }
    •  Joshua Rapp, Yanting Ma, Robin M. A. Dawson and Vivek K Goyal, "Dead Time Compensation for High-Flux Depth Imaging", ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), May 2019, pp. 7805-7809.
      BibTeX External
      • @Inproceedings{RappMa2019a,
      • author = {Rapp, Joshua and Ma, Yanting and Dawson, Robin M. A. and Goyal, Vivek K},
      • title = {Dead Time Compensation for High-Flux Depth Imaging},
      • booktitle = {{ICASSP} 2019 - 2019 {IEEE} {International} {Conference} on {Acoustics}, {Speech} and {Signal} {Processing} ({ICASSP})},
      • year = 2019,
      • pages = {7805--7809},
      • month = may,
      • url = {https://ieeexplore.ieee.org/document/8683805/}
      • }
    •  Joshua Rapp, Robin M. A. Dawson and Vivek K Goyal, "Improving Lidar Depth Resolution With Dither", Proceedings of the IEEE International Conference on Image Processing, October 2018, pp. 1553-1557.
      BibTeX External
      • @Inproceedings{Rapp2018b,
      • author = {Rapp, Joshua and Dawson, Robin M. A. and Goyal, Vivek K},
      • title = {Improving Lidar Depth Resolution With Dither},
      • booktitle = {Proceedings of the {IEEE} {International} {Conference} on {Image} {Processing}},
      • year = 2018,
      • pages = {1553--1557},
      • month = oct,
      • url = {https://ieeexplore.ieee.org/document/8451528/}
      • }
    •  Joshua Rapp and Vivek K Goyal, "A Few Photons Among Many: Unmixing Signal and Noise for Photon-Efficient Active Imaging", IEEE Transactions on Computational Imaging, Vol. 3, No. 3, pp. 445-459, September 2017.
      BibTeX External
      • @Article{Rapp2017,
      • author = {Rapp, Joshua and Goyal, Vivek K},
      • title = {A Few Photons Among Many: Unmixing Signal and Noise for Photon-Efficient Active Imaging},
      • journal = {IEEE Transactions on Computational Imaging},
      • year = 2017,
      • volume = 3,
      • number = 3,
      • pages = {445--459},
      • month = sep,
      • url = {https://ieeexplore.ieee.org/document/7932527/}
      • }