Dilip Krishnan

I am a Research Scientist at Google’s Cambridge office (Massachusetts). I work on Artificial Intelligence and Computer Vision, using and developing tools from Machine/Deep Learning.

From August 2013 to November 2014, I was a Postdoctoral Associate with Bill Freeman at MIT’s CSAIL Lab. In June 2013, I received my PhD from the Computer Science department at New York University , under the supervision of Rob Fergus. I was awarded a Microsoft Research PhD Fellowship for 2010-2011, a Dean’s Dissertation Fellowship for 2012-2013 from the Graduate School of Arts and Sciences and the Janet Fabri prize (2013-2014) for outstanding dissertation in Computer Science.

Email: dilipkay@gmail.com.

CV

Publications and Products:

• Y. Ovadia, Y. Halpern, D. Krishnan, J. Livni, D. Newburger, R. Poplin, T. Zha and D. Sculley. Learning to Count Mosquitoes for the Sterile Insect Technique, To appear in KDD 2017.
• May 2017, Google product launch (Deep-learning based smart stickers):
  • https://techcrunch.com/2017/05/11/googles-neural-network-generated-custom-face-stickers-are-like-bitmoji-that-arent-horrible/
  • https://research.googleblog.com/2017/05/neural-network-generated-illustrations.html
  • https://twitter.com/search?f=tweets&vertical=default&q=https%3A%2F%2Fwww.fastcodesign.com%2F90124964%2Fexclusive-new-google-tool-uses-ai-to-create-custom-emoji-of-you-from-a-selfie&src=typd
• F. Cole, D. Belanger, D. Krishnan, I. Mosseri, A. Sarna, W. T. Freeman. Face Synthesis from Facial Identity Features, To appear in CVPR 2017 (Spotlight).
• K. Bousmalis, N. Silberman, D. Dohan, D. Erhan, D. Krishnan. Unsupervised Pixel-Level Domain Adaptation with Generative Adversarial Networks, To appear in CVPR 2017 (Oral presentation).
• Y. Ovadia, Y. Halpern, D. Krishnan, J. Livni, D. Newburger, R. Poplin, T. Zha and D. Sculley. Learning to Count and Classify Mosquitoes for the Sterile Insect Technique, NIPS 2016 Machine Learning for Healthcare Workshop.
• K. Bousmalis, G. Trigeorgis, N. Silberman, D. Krishnan and D. Erhan. Domain Separation Networks, NIPS 2016.
• P. Isola, D. Zoran, D. Krishnan and E. H. Adelson. Learning Visual Groups from Co-occurrences in Space and Time, ICLR (Workshop Paper) 2016.
• D. Zoran, P. Isola, D. Krishnan and W. T. Freeman. Learning Ordinal Relationships for Mid-Level Vision, ICCV 2015.
• Y. Shih, D. Krishnan, F. Durand and W. T. Freeman. Reflection Removal using Ghosting Cues, CVPR 2015.
  • MIT News profile of our work.
• D. Zoran, D. Krishnan, J. Bento and W. T. Freeman. Shape and Illumination from Shading using the Generic Viewpoint Assumption, NIPS 2014.
• P. Isola, D. Zoran, D. Krishnan and E. H. Adelson. Crisp Boundary Detection Using Pointwise Mutual Information, ECCV 2014.
• D. Krishnan, J. Bruna and R. Fergus. Blind Deconvolution with Non-local Sparsity Reweighting, ArXiv, June 2014.
• D. Eigen, D. Krishnan and R. Fergus. Restoring An Image Taken Through a Window Covered with Dirt or Rain, ICCV 2013.
• D. Krishnan, R. Fattal and R. Szeliski. Efficient Preconditioners for Laplacians Arising in Computer Graphics and Computational Photography, SIGGRAPH 2013.
• D. Krishnan, R. Szeliski. Multigrid and Multilevel Preconditioners for Computational Photography, SIGGRAPH Asia 2011.
• D. Krishnan, T. Tay, R. Fergus. Blind Deconvolution using a Normalized Sparsity Measure, CVPR 2011.
• M. Zeiler, D. Krishnan, G. Taylor, R. Fergus. Deconvolutional Networks, CVPR 2010.
• D. Krishnan, R. Fergus. Fast Image Deconvolution using Hyper-Laplacian Priors , NIPS 2009.
• D. Krishnan, R. Fergus.  Dark Flash Photography, SIGGRAPH 2009.
  • Our Dark Photography work has been profiled online: http://www.engadget.com/2009/07/17/invisible-flash-produces-photos-without-glares/ http://blogs.zdnet.com/gadgetreviews/?p=5977 http://www.newscientist.com/article/dn17468-invisible-flash-takes-photos-without-the-glare.html
• D. Krishnan, Q. V. Pham, A. Y. Yip. A primal-dual active-set algorithm for bilaterally constrained total variation deblurring and piecewise constant Mumford-Shah segmentation problems, Advances in Computational Mathematics. Published Online, September 2008.
• D. Krishnan, P. Lin, A. Y. Yip. A primal-dual active-set method for non-negativity constrained total variation deblurring problems, IEEE Transactions on Image Processing, 16(11), pp. 2766-2777, November 2007.
• D. Krishnan, P. Lin, X. C. Tai. An efficient operator-splitting method for noise removal in images, Communications in Computational Physics, 1(5), pp. 847-858, October 2006.
• D. Krishnan, M. N. Chong, S. Kalra. On the computational aspects of Gibbs-Markov random field modelling of missing data in image sequences, IEEE Transactions on Image Processing, 8(8), pp. pp. 1139-1142, August 1999.
• S. Kalra, D. Krishnan, M. N. Chong. A MRF based model based scheme for accurate detection and adaptive interpolation of missing data in highly corrupted  image sequences, IEEE Conference on Image Processing, 1999.
• M. N. Chong, D. Krishnan. An edge-preserving MRF model for the detection of missing data in image sequences, IEEE Transactions on Signal Processing, 5(4), pp. 81-83, April 1998.

Patents (USPTO):

• Methods, computer-accessible medium and systems for facilitating dark flash photography.
• System, method and computer-accessible medium for restoring an image taken through a window.

Entrepreneurship/Consulting:

• Co-founder and CTO of Nirvana Digital, later acquired by Black Magic Designs. Nirvana Digital developed Revival, a film and video restoration system, now used in post-production companies worldwide.
• Consultant to MADBITS LLC, developing deep learning algorithms for image classification. Acquired by Twitter.
• Angel investor in stealth mode autonomous driving startup.
• Consultant to stealth mode deep learning startup in the produce/agriculture space.

Professional Activities: Reviewer for the following conferences and journals:

• IEEE Transactions on Image Processing.
• IEEE Computer Vision and Pattern Recognition (CVPR).
• IEEE Transactions Pattern Analysis and Machine Intelligence (PAMI).
• ACM Transactions on Graphics (SIGGRAPH) and SIGGRAPH Asia.
• Journal for Visual Comm. and Image Representation (JVCI).
• Neural Information Processing Systems (NIPS).
• European Conference on Computer Vision (ECCV).

Talks:

• Efficient Preconditioning for Laplacian Matrices. Microsoft Research, Cambridge, England, January 2014.
• Invited Talk – Fast Image Deconvolution Using Hyper Laplacian Priors. Group Meeting of Fredo Durand’s graphics group, MIT (CSAIL), October 22, 2010.
• Invited Talk – Dark Flash Photography and Fast Image Deconvolution Using Hyper Laplacian Priors. Rick Szeliski’s Interactive Visual Media Group, Microsoft Research, Seattle, December 3, 2009.
• Dark Flash Photography. SIGGRAPH 2009, New Orleans, August 7, 2009.
• Dark Flash Photography. Group meeting of Laboratory for Computational Vision, NYU, May 28, 2009.
• Dark Flash Photography. Group meeting of Bill Freeman’s Vision Group, MIT (CSAIL), May 19, 2009.
• Dark Flash Photography. Graphics Seminar, NYU, May 8, 2009.