Preprints
  1. P. Perera and V. M. Patel, "Efficient and low latency detection of intruders in mobile active authentication," submitted Aug. 2016. (pdf)
  2. R. Ranjan, V. M. Patel, and R. Chellappa, "HyperFace: a deep multi-task learning framework for face detection, landmark localization, pose estimation, and gender recognition," submitted May 2016. (pdf)
  3. H. Zhang and V. M. Patel, "Convolutional sparse and low-rank coding-based image decomposition," submitted Sept. 2016. (pdf)


Journal Papers
  1. P. Wang, H. Zhang and V. M. Patel, "SAR image despeckling using a convolutional neural network," IEEE Signal Processing Letters, accepted for publication, Aug 2017. (pdf)
  2. V. A. Sindagi and V. M. Patel, "A survey of recent advances in CNN-based single image crowd counting and density estimation," Pattern Recognition Letters, accepted for publication, July 2017. (pdf)
  3. C-H. Chen, V. M. Patel and R. Chellappa, "Learning from ambiguously labeled face images," IEEE Transactions on Pattern Analysis and Machine Intelligence, accepted for publication, June 2017. (pdf)
  4. J-C. Chen, R. Ranjan, S. Sankaranarayanan, A. Kumar, C-H. Chen, V. M. Patel, C. D. Castillo, and R. Chellappa, "Unconstrained still/video-based face verification with deep convolutional neural networks," International Journal of Computer Vision, accepted for publication, June 2017. (pdf)
  5. S. Wang, V. M. Patel and A. Petropulu, "A robust sparse Fourier transform and its application in radar signal processing," IEEE Transactions on Aerospace and Electronic Systems, accepted for publication, May 2017. (pdf)
  6. M. Abavisani and V. M. Patel, "Multimodal sparse and low-rank subspace clustering," Information Fusion, vol. 39, pp. 168-177, Jan. 2018. (pdf)
  7. H. Zhang, V. M. Patel, R. Chellappa, "Low-rank and joint sparse representations for multimodal recognition," IEEE Transactions on Image Processing, vol. 26, no. 10, pp. 4741-4752, Oct. 2017. (pdf)
  8. J. Chen, V. M. Patel, V. Kellokumpu, G. Zhao, M. Pietikäinen, and R. Chellappa, "Robust local features for remote face recognition," Image and Vision Computing, vol. 64, pp. 34-46, 2017. (pdf)
  9. E. Gonzalez-Sosa, R. Vera-Rodriguez, J. Fierrez and V. M. Patel, "Exploring body shape from mmW images for person recognition," IEEE Transactions on Information Forensics and Security, vol. 12, no.9, pp. 2079-2089, Sept. 2017. (pdf)
  10. H. Zhang and V. M. Patel, "Sparse representation-based open set recognition," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 39, no.8, pp. 1690-1696, Aug. 2017. (pdf)
  11. A. Ghosh, M. A. Powers, and V. M. Patel, "Computational LADAR imaging, "Applied Optics, vol. 56, no. 3, pp. B191-B197, 2017. (link)
  12. V. M. Patel, J. N. Mait, D. W. Prather, and A. S. Hedden, "Computational millimeter wave imaging: problems, progress and prospects," IEEE Signal Processing Magazine: Special Issue on Computational Photography and Displays, vol. 33, no. 5, pp. 109-118, Sept. 2016. (pdf)
  13. X. Gibert-Serra, V. M. Patel, and R. Chellappa, "Deep multi-task learning for railway track inspection,” IEEE Transactions on Intelligent Transportation Systems, vol. 18, no. 1, pp. 153-164, Jan. 2017. (pdf)
  14. P. Samangouei, V. M. Patel, and R. Chellappa, "Facial attributes for active authentication on mobile devices," Image and Vision Computing, vol. 58, pp. 181-192, Feb. 2017. (pdf)
  15. V. M. Patel, R. Chellappa, D. Chandra, and B. Barbello, “Continuous user authentication on mobile devices: recent progress and remaining challenges,” IEEE Signal Processing Magazine, vol. 33, no. 4, pp. 49-61, July 2016. (pdf)
  16. H. V. Nguyen, H. T. Ho, V. M. Patel, and R. Chellappa, "DASH-N: Joint hierarchical domain adaptation and feature learning," IEEE Transactions on Image Processing, vol. 24, no. 12, pp. 5479 - 5491, Dec. 2015. (pdf)
  17. Y-C. Chen, V. M. Patel, P. J. Phillips, and R. Chellappa, "Dictionary-based face and person recognition from unconstrained video," IEEE Access: Special Issue on 4D’s of Machine Learn- ing for Biometrics: Deep Learning, Dictionary Learning, Domain Adaptation, and Distance Metric Learning, vol. 3, pp. 1783 - 1798, Oct. 2015. (link)
  18. A. Shrivastava, V. M. Patel, J. K. Pillai, and R. Chellappa, "Generalized dictionaries for multiple instance learning," International Journal of Computer Vision: Special Issue on Sparse Coding, vol. 114, no. 2, pp. 288-305, Sept. 2015. (pdf)
  19. V. M. Patel, N. K. Ratha, and R. Chellappa, "Cancelable biometrics: A review," IEEE Signal Processing Magazine: Special Issue on Biometric Security and Privacy, vol. 32, no. 5, pp. 54-65, Sept. 2015. (pdf)
  20. S. Shekhar, V. M. Patel, H. V. Nguyen and R. Chellappa, "Coupled projections for adaptation of dictionaries," IEEE Transactions on Image Processing, vol 24, no. 10, pp. 2941-2954, Oct. 2015. (pdf)
  21. R. Gopalan, R. Li, V. M. Patel and R. Chellappa, "Domain adaptation for visual recognition," Foundations and Trends on Computer Graphics and Vision, vol. 8, no. 4, pp 285-378, Mar. 2015. (link)
  22. A. Shrivastava, J. K. Pillai, and V. M. Patel, "Multiple kernel-based dictionary learning for weakly supervised classification," Pattern Recognition, vol. 48, no. 8, pp. 2667-2675, Aug. 2015. (pdf)
  23. V. M. Patel, H. V. Nguyen, and R. Vidal, "Latent space sparse and low-rank subspace clustering," IEEE Journal of Selected Topics in Signal Processing: Special Issue on Signal Processing for Big Data, vol. 9, no. 4, pp. 691-701, June 2015. (pdf)
  24. Y-C. Chen, V. M. Patel, R. Chellappa, and P. J. Phillips, "Salient views and view-dependent dictionaries for object recognition," Pattern Recognition: Special Issue on Discriminative Feature Learning from Big Data for Visual Recognition, vol. 48, no. 10, pp. 3053 - 3066, Oct. 2015. (pdf)
  25. Y-C. Chen, V. M. Patel, R. Chellappa, and P. J. Phillips, "Ambiguously labeled learning using dictionaries," IEEE Transactions on Information Forensics and Security: Special Issue on Facial Biometrics in the Wild, vol. 9, no. 12, pp. 2076-2088, Dec. 2014. (pdf)
  26. V. M. Patel, R. Gopalan, R. Li, and R. Chellappa, "Visual domain adaptation: a survey of recent advances," IEEE Signal Processing Magazine, vol. 32, no. 3, pp. 53 - 69, May 2015. (pdf)
  27. A. Shrivastava, V. M. Patel, and R. Chellappa, "Non-linear dictionary learning with partially labeled data," Pattern Recognition, vol. 48, no. 11, pp. 283-3292, Nov. 2015. (pdf)
  28. Q. Qiu, V. M. Patel, and R. Chellappa, "Information-theoretic dictionary learning for image classification," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 36, no. 11, pp. 2173-2184, Oct. 2014. (pdf)
  29. X. Gibert-Serra, V. M. Patel, D. Labate, and R. Chellappa, "Discrete shearlet transform on GPU with applciations in anomaly detection and denoising," EURASIP Journal on Advances in Signal Processing, vol. 2014, pp. 1-64, May 2014. (pdf)
  30. A. Shrivastava, V. M. Patel, and R. Chellappa, "Multiple kernel learning for sparse representation-based classification," IEEE Transactions on Image Processing, vol. 23, no. 7, pp. 3013-3024, July 2014. (pdf)
  31. V. M. Patel, Y-C Chen, R. Chellappa, and P. J. Phillips, "Dictionaries for image and video-based face recognition," Journal of the Optical Society of America A, vol. 31, no. 5, pp. 1090-1103, May 2014. (pdf)
  32. M. E. Fathy, V. M. Patel, T. Yeh, Y. Zhang, R. Chellappa, and L. Davis, "Screen-based active user authentication," Pattern Recognition Letters, vol. 42, pp. 122-127, June 2014. (pdf)
  33. V. M. Patel, G. R. Easley, R. Chellappa, and N. M. Nasrabadi, "Separated component-based restoration of speckled SAR images," IEEE Transactions on Geoscience and Remote Sensing, vol. 52, no. 2, pp. 1019-1029, Feb. 2014. (pdf)
  34. G. R. Easley, D. Labate, and V. M. Patel, "Directional multiscale processing of images using wavelets with composite dilations," Journal of Mathematical Imaging and Vision, vol. 48, no. 1, pp. 13-34, Jan. 2014. (pdf)
  35. S. Shekhar, V. M. Patel, N. M. Nasrabadi and R. Chellappa, "Joint sparse representation for robust multimodal biometrics recognition," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 36, no. 1, pp. 113-126, Jan. 2014. (pdf)
  36. H. V. Nguyen, V. M. Patel, N. M. Nasrabadi, and R. Chellappa, "Design of non-linear kernel dictionaries for object recognition," IEEE Transactions on Image Processing, vol. 22, no. 12, pp. 5123-5135, Dec. 2013. (pdf)
  37. S. Taheri, V. M. Patel, and R. Chellappa, "Component-based recognition of faces and facial expressions," IEEE Transactions on Affective Computing, vol. 4, no. 4, pp. 360-371, Oct. 2013. (pdf)
  38. V. M. Patel, T. Yeh, M. E. Fathy, Y. Zhang, Y. Chen, R. Chellappa, and L. Davis, "Screen fingerprints: a novel modality for active authentication," IEEE IT Professional Magazine: Special Issue on Security, vol. 15, no. 4, pp. 38-42, July 2013. (pdf)
  39. Y-C. Chen, C. S. Sastry, V. M. Patel, P. J. Phillips and R. Chellappa, "In-plane rotation and scale invariant clustering using dictionaries," IEEE Transactions on Image Processing, vol. 22, no. 6, pp. 2166-2180, June 2013. (pdf)
  40. R. Chellappa, J. Ni, and V. M. Patel, "Remote identification of faces: problems, prospects, and progress," Pattern Recognition Letters: Special Issue on Novel Pattern Recognition-based Methods for Reidentification in Biometric Context, vol. 33, no. 15, pp. 1849-1859, Oct. 2012. (Invited) (link)
  41. V. M. Patel and J. N. Mait, "Compressive passive millimeter-wave imaging with extended depth of field," Optical Engineering: Special Section on Terahertz and Millimeter Wave Imaging,  vol. 51, no. 9, Sept. 2012. (pdf)
  42. V. M. Patel, T. Wu, S. Biswas, P. J. Phillips, and R. Chellappa, "Dictionary-based face recognition under variable lighting and pose," IEEE Transactions on Information Forensics and Security, vol. 7, no. 3, pp. 954-965, June 2012. (pdf)
  43. V. M. Patel, R. Maleh, A. C. Gilbert, and R. Chellappa, "Gradient-based image recovery methods from incomplete Fourier measurements," IEEE Transactions on Image Processing, vol. 21, no. 1, pp. 94-105, Jan. 2012. (pdf)
  44. J. Ni, P. Turaga, V. M. Patel and, R. Chellappa, "Example-driven manifold priors for image deconvolution," IEEE Transactions on Image Processing, vol. 20, no. 11,  pp. 3086-3096, Nov. 2011. (pdf)
  45. J. K. Pillai, V. M. Patel, R. Chellappa and N. K. Ratha, "Random projections and sparse representations for secure and robust iris recognition," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 33, no. 9, pp. 1877-1893, Sept. 2011. (pdf)
  46. V. M. Patel, N. M. Nasrabadi, and R. Chellappa, "Sparsity-motivated automatic target recognition," Applied Optics, vol. 50, no. 10, pp. 1425-1433, April 2011. (link)
  47. V. M. Patel, G. R. Easley, D. M. Healy, Jr. and R. Chellappa, "Compressed synthetic aperture radar," IEEE Journal of Selected Topics in Signal Processing: Special Issue on Compressive Sensing, vol. 4, no. 2, pp. 244-254, April 2010. (pdf)[Nominated for the IEEE Signal Processing Society 2012 Young Author Best Paper Award]
  48. V. M. Patel, G. R. Easley and D. M. Healy, Jr., "Shearlet-based deconvolution," IEEE Transactions on Image Processing, vol. 18, no. 12, pp. 2673-2685, Dec. 2009. (pdf)