Journals
All publications Books and book chapters List of conferences
- Nisha Varghese, Mahesh Mohan M. R., A. N. Rajagopalan, "Fast Motion-deblurring of IR images," accepted by IEEE Signal Processing Letters, Dec 2021.
- Kuldeep Purohit, Subeesh Vasu, M. Purnachandra Rao, A. N. Rajagopalan, "Multi-planar Geometry and Latent Image Recovery from a Single Motion-Blurred Image," accepted by Machine Vision and Applications, 2021
- Mahesh Mohan M. R., G.K. Nithin, A. N. Rajagopalan, "Deep dynamic scene deblurring for unconstrained dual-lens cameras," accepted by IEEE Transaction on Image Processing , 2021.
- Maitreya Suin*, Kuldeep Purohit*, A.N. Rajagopalan, "Degradation Aware Approach to Image Restoration Using Knowledge Distillation," accepted by IEEE Journal of Selected Topics in Signal Processing, 2021.
- Srimanta Mandal, and A. N. Rajagopalan, "Local Proximity for Enhanced Visibility in Haze," accepted by IEEE Transactions on Image Processing, 2020.
- Praveen Kandula, Lokesh Kumar, and A. N. Rajagoapalan, "Deep End-to-End Rolling Shutter Rectification," accepted by Journal of the Optical Society of America A, 2020.
- Kuldeep Purohit, Srimanta Mandal, and A.N. Rajagopalan, “Mixed-Dense Connection Networks for Image and Video Super-Resolution,” accepted by Neurocomputing (Special Issue on Deep Learning for Image Super-Resolution), 2019.
- Kuldeep Purohit, Srimanta Mandal, and A.N. Rajagopalan, "Multi-level Weighted Enhancement for Underwater Image Dehazing'', Journal of the Optical Society of America A, 2019.
- T. M. Nimisha, A. N. Rajagopalan, and R. Aravind, “Generating High Quality Pan-Shots from Motion Blurred Videos,” Computer Vision and Image Understanding (CVIU), May 2018.
- Subeesh Vasu, A. N. Rajagopalan, and Guna Seetharaman,“Camera Shutter-Independent Registration and Rectification,” IEEE Transactions on Image Processing., Vol. 27, No. 4, pp. 1901 - 1913, April 2018.
- Abhijith Punnappurath, T. M. Nimisha, and A.N. Rajagopalan,“Multi-image blind super-resolution of 3D scenes,” IEEE Transactions on Image Processing., Vol. 26, No. 11, pp. 5337-5352, November 2017.
- Vijay Rengarajan, A.N. Rajagopalan, R. Aravind, and Guna Seetharaman,“Image Registration and Change Detection under Rolling Shutter Motion Blur,” IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI), November, 2016 doi: 10.1109/TPAMI.2016.2630687
- Abhijith Punnappurath and A. N. Rajagopalan, "Recognizing blurred, nonfrontal, illumination, and expression variant partially occluded faces," Journal of the Optical Society of America A, 33, pp. 1887-1900, 2016
- Karthik Seemakurthy and A.N. Rajagopalan, ``Change Detection in Underwater Imagery'', Journal of the Optical Society of America A,33, pp. 301-313, 2016.
- Abhijith Punnappurath, A. N. Rajagopalan, Sima Taheri, Rama Chellappa, and Guna Seetharaman, ``Face Recognition across Non-Uniform Motion Blur, Illumination, and Pose", IEEE Transactions on Image Processing, Vol.24, No.7, pp.2067--2082, July 2015.
- Karthik Seemakurthy and A.N. Rajagopalan, ``Deskewing of underwater images'', IEEE Transactions on Image Processing, Vol. 24, Iss. 3, pp.1046--1059, March 2015.
- M. Purnachandra Rao, A.N. Rajagopalan and Guna Seetharaman, ``Harnessing Motion Blur to Unveil Splicing'' IEEE Transactions on Information Forensics and Security, Vol. 9, Iss. 4, pp.583--595, April 2014.
- C. Paramanand, and A.N. Rajagopalan, ``Shape from Sharp and Motion-Blurred Image Pair'', International Journal of Computer Vision, Vol. 107, Iss. 3, pp 272--292, May 2014.
- Kulkarni, Mandar, and Ambasamudram N. Rajagopalan. ``Depth inpainting by tensor voting.'' Journal of the Optical Society of America A (JOSA A) 30.6 (2013): 1155-1165.
- C. S. Vijay, C. Paramanand, A. N. Rajagopalan and R. Chellappa ``Non-uniform deblurring in HDR image reconstruction,'' IEEE Transactions on Image Processing, Vol.22, No.10, pp.3739,3750, Oct. 2013
- Sahana M. Prabhu and A.N. Rajagopalan, ``Unified multi-frame super-resolution of matte, foreground and background,'' Journal of the Optical Society of America A (JOSA A) 30, 1524-1534 (2013)
- Rajiv R. Sahay and A.N. Rajagopalan, ``Shape extraction of low-textured objects in video microscopy'', Journal of Microscopy, vol. 245, pages 252-264, March 2012.
- A. V. Bhavsar and A. N. Rajagopalan. ``Range map super-resolution inpainting and reconstruction from sparse data''. Computer Vision and Image Understanding (CVIU) , Vol. 116, Issue 4, pp. 572 - 591, 2012.
- A. V. Bhavsar and A. N. Rajagopalan. ``Towards unrestrained depth inference with coherent occlusion filling'', International Journal of Computer Vision (IJCV), Vol. 97, Issue 2, pp. 167 - 190, 2012.
- Hariharan, R.; Rajagopalan, A.N.; , ``Shape-From-Focus by Tensor Voting,'' Image Processing, IEEE Transactions on , vol.21, no.7, pp.3323-3328, July 2012
- A.N. Rajagopalan, ``Motion-blur: Some new insights'', Annals of the Indian National Academy of Engineering, 2012.
- C. Paramanand and A. N. Rajagopalan, ``Depth from motion and optical blur with unscented Kalman filter,'' IEEE Transactions on Image Processing, vol. 21, no. 5, pp. 2798-2811, 2012.
- Rajiv R. Sahay and A. N. Rajagopalan, ``Dealing with parallax in shape-from-focus'' IEEE Transactions on Image Processing , vol. 20, pp. 558-569, 2011.
- Sahana M. Prabhu and A.N. Rajagopalan,``Natural Matting for Degraded Pictures,'' IEEE Trans. Image Proc., vol. 20, no. 12, pp. 3647--3653, Dec. 2011.
- C. Paramanand and A.N. Rajagopalan, ``Image matching with higher-order geometric features,'' Journal of the Optical Society of America A vol. 27, no. 4, pp. 739-748, 2010.
- G. R. K. S. Subrahmanyam, A. N. Rajagopalan and R. Aravind, ``A recursive framework for joint inpainting and de-noising of photographic films'', Journal of the Optical Society of America A (JOSA A) vol. 27, no. 5, pp. 1091-1099, 2010.
- A.V. Bhavsar and A.N.Rajagopalan, ``Resolution enhancement in multi-image stereo,'' IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 32, Issue 9, pp. 1721 - 1728, 2010.
- Rajiv R. Sahay and A. N. Rajagopalan, ``Joint image and depth completion in shape-from-focus: Taking a cue from parallax'' Journal of the Optical Society of America A (JOSA A) , vol. 27, no. 5, pp. 1203-1213, 2010.
- G.R.K.S. Subrahmanyam, A.N. Rajagopalan and R. Aravind, ``A recursive filter for despeckling SAR images'', IEEE Transactions on Image Processing, vol. 17, no. 10, pp. 1969-1974, 2008.
- R.R. Sahay and A.N. Rajagopalan, ``Harnessing defocus blur to recover high-resolution information in shape-from-focus technique'', IET Computer Vision, vol. 2, no. 2, pp. 50-59, 2008.
- G.R.K.S. Subrahmanyam, A. N. Rajagopalan and R. Aravind, ``Importance sampling unscented Kalman filter for film-grain noise removal,'' IEEE Multimedia Magazine, vol. 15, no. 2, pp. 52-63, 2008.
- Pradeep, K. and Rajagopalan, A.N., ``Improving shape from focus using defocus cue''. IEEE Transactions on Image Processing. 16,1920 - 1925.
- Shanker, P.A. and Rajagopalan, A.N., ``Off-line signature verification using DTW''. Pattern Recognition Letters. 28, 1407-1414.
- Subrahmanyam, G.R.K.S., Rajagopalan, A.N., and Aravind, R., ``Importance sampling Kalman filter for image estimation''. IEEE Signal Processing Letters. 14, 453 - 456.
- Suresh, K.V., Mahesh, G., and Rajagopalan, A.N., ``Super-resolution of license plates in real traffic videos''. IEEE Transactions on Intelligent Transportation Systems, 8, 321-331
- Suresh, K.V. and Rajagopalan, A.N., ``A robust and computationally efficient super-resolution algorithm''. Journal of the Optical Society of America A (JOSA A), 24, 984-992.
- Chakrabarti A., Rajagopalan, A.N., and Chellappa R., ``Super-resolution of face images using kernel PCA-based prior.'' IEEE Transactions on Multimedia, 9, 888-892.
- Rajagopalan, A.N., Rao, K.S. and Kumar, Y.A., ``Face recognition using multiple facial features.'' Pattern Recognition Letters, 28, 335-341.
- R.R. Sahay and A.N. Rajagopalan, ``Extension of the shape from focus method for reconstruction of high resolution images'', Journal of the Optical Society of America A, Vol. 24, Issue 11, pp. 3649-3657, 2007.
- Krishna, P.J. and Rajagopalan, A.N. (2006) ``Image restoration using the particle filter: Handling non-causality.'' IEE-F Proceedings on Vision, Image and Signal Processing, 153, 650-656.
- Ibrahim, S.S. and Rajagopalan, A.N. (2006) ``Restoration of scanned photographic images. Signal Processing'' 86, 1035-1048.
- Ibrahim, S.S. and Rajagopalan, A.N. (2006) ``Particle filter for identification of parametric space-variant blur.'' International Journal of Systemics, Cybernetics and Informatics. 013-019.
- Rao, K.S. and Rajagopalan, A.N. (2005) ``A probabilistic fusion methodology for face recognition.'' EURASIP Journal on Applied Signal Processing 2005, 2772-2787.
- Rajagopalan, A.N., Chellappa, R. and Koterba, N. (2005) ``Background learning for robust face recognition with PCA in the presence of clutter.'' IEEE Transactions on Image Processing,14, 832-843.
- Ibrahim, S.S. and Rajagopalan, A.N. (2005) ``Image recovery under nonlinear/non-Gaussian degradations.'' JOSA-A: Journal of the Optical Society of America - A, 22, 604-615.
- Ibrahim, S.S. and Rajagopalan, A.N. (2005) ``Image estimation in film-grain noise.'' IEEE Signal Processing Letters, 12, 238-241.
- A.N. Rajagopalan, S. Chaudhuri, and M. Uma, ``Depth estimation and image restoration using defocused stereo pairs,'' IEEE Transactions on Pattern Analysis and Machine Intelligence, 2004, 26, 1521-1525
- Amit Kale, A.N. Rajagopalan, A. Sundaresan, N. Cuntoor, A. RoyChowdhury, V. Kruger, and Rama Chellappa, ``Identification of Humans Using Gait'', IEEE Transactions on Image Processing, 2004, 13, 1163-1173
- A.N. Rajagopalan and V. Phani Kiran, ``Motion-free superresolution and the role of relative blur'', JOSA-A: Journal of the Optical Society of America - A, vol. 20, no. 11, pp. 2022-2032, Nov. 2003.
- A.N. Rajagopalan, ``Clustering using higher order statistics'', Electronics Letters, vol. 18, pp. 122-124, 2002.
- A.N. Rajagopalan and Rama Chellappa, ``Higher order statistics-based detection of vehicles in still images'', JOSA-A: Journal of the Optical Society of America - A, vol. 18, pp. 3037-3048, Dec. 2001.
- A.N. Rajagopalan and Rama Chellappa, ``Higher order statistics-based detection of people/vehicles in images'', INSA-A Journal: Special Issue on Image Processing, Vision and Pattern Recognition (invited paper), 67, pp 157-166.
- A.N. Rajagopalan, S. Chaudhuri and Rama Chellappa, ``A quantitative analysis of error bounds in the recovery of depth from defocused images'', JOSA-A: Journal of the Optical Society of America - A, vol. 17, no. 10, pp. 1722-1731, Oct. 2000.
- A.N. Rajagopalan, K. Sunil Kumar, Jayashree Karlekar, R. Manivasakan, M. Milind Patil, U. B. Desai, P. G. Poonacha and S. Chaudhuri, ``Locating human faces in a cluttered scene'', CVGIP : Graphical Models and Image Processing vol. 62, no. 5, pp. 323-342, Sept. 2000.
- A.N. Rajagopalan, Avinash Jain and U.B. Desai, ``Data clustering using hierarchical deterministic annealing and higher order statistics'', IEEE Transactions on Circuits and Systems-II, vol. 46, no. 8, pp. 1100-1104, August 1999.
- A.N. Rajagopalan and S. Chaudhuri, ``MRF model-based identification of shift-variant point spread function for a class of imaging systems'', Signal Processing (North-Holland), vol. 76, no. 3, pp. 285-299, August 1999.
- A.N. Rajagopalan and S. Chaudhuri, ``An MRF model-based approach to simultaneous recovery of depth and restoration from defocused images'', IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 21, no. 7, pp. 577-589, July 1999.
- A.N. Rajagopalan and S. Chaudhuri, ``Performance analysis of maximum likelihood estimator for recovery of depth from defocused images and optimal selection of camera parameters'', International Journal of Computer Vision, vol. 30, no. 3, pp. 175-190, Dec. 1998.
- A.N. Rajagopalan and S. Chaudhuri, ``A recursive algorithm for maximum likelihood-based identification of blur from multiple observations'', IEEE Transactions on Image Processing, vol. 7, no. 7, pp. 1075-1079, July 1998.
- A.N. Rajagopalan and S. Chaudhuri, ``Space-variant approaches for the recovery of depth from defocused images'', Computer Vision and Image Understanding, vol. 68, no. 3, pp. 309-329, Dec. 97.
- A.N. Rajagopalan and S. Chaudhuri, ``A variational approach to depth from defocused images'', IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 19, no. 10, pp. 1158-1165, Oct. 97.