Publications
PhD Thesis
"Scene Analysis under Variable Illumination using Gradient Domain Methods", Dept. of Electrical and Computer Engineering, University of Maryland, College Park, 2006 pdf



SIGGRAPH & Eurographics

Y. Taguchi, A. Agrawal, A. Veeraraghavan, S. Ramalingam and R. Raskar, "Axial-Cones: Modeling Spherical Catadioptric Cameras for Wide-Angle Light Field Rendering", SIGGRAPH Asia 2010    Low res pdf, High res pdf,  Video, Youtube Video,  Talk Slides

A. Agrawal, A. Veeraraghavan & R. Raskar, "Reinterpretable Imager: Towards Variable Post Capture Space, Angle & Time Resolution in Photography", Eurographics 2010
Low res pdf, High res pdf, Youtube Video, Video (Quicktime), Slides

A. Agrawal, Y. Xu & R. Raskar, "Invertible Motion Blur in Video", ACM
Transactions on Graphics (Proceedings of SIGGRAPH) 2009
pdf, Video, Talk Slides

D. Lanman, R. Raskar, A. Agrawal & G. Taubin, "Shield Fields: Modeling and Capturing 3D Occluders", SIGGRAPH Asia 2008
Low res pdf (1MB), High res pdf (13MB), Video (25MB), Video (youtube link), Talk slides (27MB)   


R. Raskar, A. Agrawal, C. Wilson &
A. Veeraraghavan, "Glare Aware Photography: 4D Ray Sampling for Reducing Glare Effects of Camera Lenses", ACM Transactions on Graphics (Proceedings of SIGGRAPH) 2008
Low res pdf ,    High res pdf,     Video,     SIGGRAPH Talk Slides


A. Veeraraghavan, R. Raskar, A. Agrawal, A. Mohan & J. Tumblin, "
Dappled Photography: Mask Enhanced Cameras for Heterodyned Light Fields and Coded Aperture Refocusing", ACM Transactions on Graphics (Proceedings of SIGGRAPH) 2007
Low res pdfHigh res pdf,  Talk Slides PPT

R. Raskar, A. Agrawal & J. Tumblin, "Coded Exposure Photography: Motion Deblurring using Fluttered Shutter", ACM Transactions on Graphics (Proceedings of SIGGRAPH) 2006
Low res pdf  High res pdf  Talk Slides PPT    View Sildes as html

A. Agrawal,  R. Raskar,  Shree K. Nayar &  Y. Li,  "Removing Photography Artifacts using Gradient Projection and Flash-Exposure Sampling",  ACM Transactions on Graphics (Proceedings of  SIGGRAPH) 2005  
Dataset for High Dynamic Range Scene       low res pdf (1.5 MB),    high res pdf (13 MB),     talk slides  (18 MB)


Vision/Robotics Journals

A. Agrawal, Y. Sun, J. Barnwell & R. Raskar, "Vision Guided Robot System for Picking Objects by Casting Shadows", accepted in International Journal of Robotics Research (IJRR), 2009 pdf

A. Agrawal & R. Chellappa,  "Robust Ego-Motion Estimation and 3D Model Refinement using Surface Parallax", IEEE Transactions on Image Processing, Vol. 15, No. 5, May 2006 pdf

M. Gupta, A. Agrawal, A. Veeraraghavan and S. G. Narasimhan, "A Practical Approach to 3D Scanning in the Presence of Inter-reflections, Subsurface Scattering and Defocus, IJCV 2012  pdf


Conference


A. Agrawal & S. Ramalingam, "Single Image Calibration of Multi-Axial Imaging Systems", CVPR 2013

Y. Taguchi, A. Agrawal & O. Tuzel, "Motion-Aware Structured Light Using Spatio-Temporal Decodable Patterns, ECCV 2012

A. Agrawal, S. Ramalingam, Y. Taguchi & V. Chari, "A Theory of Multi-Layer Flat Refractive Geometry", CVPR 2012 (oral presentation)

D. Wu, A. Velten, M. O’Toole, A. Agrawal & R. Raskar, "Decomposing Global Light Transport using Time of Flight Imaging", CVPR 2012 (
oral presentation)

N. Shroff, A. Veeraraghavan, Y. Taguchi, O. Tuzel, A. Agrawal & R. Chellappa, "
Variable Focus Video: Reconstructing Depth and Video for Dynamic Scenes", ICCP 2012 (oral presentation)

V. Chari, A. Agrawal, Y. Taguchi & S. Ramalingam, "Convex Bricks: A New Primitive for Visual Hull Modeling and Reconstruction", ICRA 2012 (oral presentation)

A. Agrawal, Y. Taguchi & S. Ramalingam, "Beyond Alhazen's Problem: Analytical Projection Model for Non-Central Catadioptric Cameras with Quadric Mirrors", CVPR 2011 (oral presentation)

M. Gupta, A. Agrawal, A. Veeraraghavan & S. Narasimhan, "Structured Light 3D Scanning in Presence of Global Illumination", CVPR 2011

A. Agrawal, Y. Taguchi, & S. Ramalingam, "Analytical Forward Projection for Axial Non-Central Dioptric and Catadioptric Cameras", ECCV 2010 pdf (oral presentation)

M. Gupta,
A. Agrawal, A. Veeraraghavan, & S. Narasimhan, "Flexible Voxels for Motion Aware Videography", ECCV 2010 pdf

A. Sankarnarayanan, A. Veeraraghavan, O. Tuzel, & A. Agrawal, "Image Invariants for Smooth Reflective Surfaces", ECCV 2010 pdf

A. Agrawal, M. Gupta, A. Veeraraghavan & S. Narasimhan, "Optimal Coded Sampling for Temporal Super-Resolution", CVPR 2010 pdf

Y. Taguchi, A. Agrawal, S. Ramalingam & A. Veeraraghavan, "Axial Light Fields for Curved Mirrors: Reflect Your Perspective, Widen Your View", CVPR 2010
(oral presentation)
pdf
  Talk Slides ppt

A. Sankarnarayanan, A. Veeraraghavan, O. Tuzel & A. Agrawal, "Specular Surface Reconstruction using Sparse Reflection Correspondences", CVPR 2010 pdf

M-Y Liu, O. Tuzel, A. Veeraraghavan, R. Chellappa, A. Agrawal & H. Okuda, "Pose Estimation in Heavy Clutter using a Multi-Flash Camera", ICRA 2010

A. Agrawal &
R. Raskar, "Optimal Single Image Capture for Motion Deblurring", CVPR 2009  pdf   

A. Agrawal &
Y. Xu, "Coded Exposure Deblurring: Optimized Codes for PSF Estimation and Invertibility", CVPR 2009  pdf  

D. Reddy, A. Agrawal & R. Chellappa, "Enforcing Integrability by Error Correction using L-1 Minimization", CVPR 2009  pdf 

J. Chang, R. Raskar & A. Agrawal, "3D Pose Estimation and Segmentation using Specular Cues", CVPR 2009  pdf   

A. Veeraraghavan, A. Agrawal, R. Raskar,  A. Mohan & J. Tumblin, "Non-Refractive Modulators for Encoding and Capturing Scene Appearance and Depth", CVPR 2008

T. Koh, A. Agrawal, R. Raskar, S. Morgan, N. Miles & B.H Gill, "Detecting and Segmenting Un-occluded Items by Actively Casting Shadows", ACCV 2007 (oral presentation)

A. Agrawal & R. Raskar, "Resolving Objects at Higher Resolution from a Single Motion-Blurred Image", CVPR 2007 (oral presentation)

A. Agrawal, R. Raskar & R. Chellappa, "Edge Suppression by Gradient Field Transformation using Cross-Projection Tensors", CVPR 2006  pdf    Matlab Code

A. Agrawal, R. Raskar & R. Chellappa, "What is the Range of Surface Reconstructions from a Gradient Field?", ECCV 2006  (oral presentation, 4.5% acceptance)   
pdf    Matlab code GUI    Matlab Code Mfiles

A. Agrawal, R. Chellappa & R. Raskar, "An Algebraic Approach to Surface Reconstruction from Gradient Fields",  ICCV 2005 pdf   Matlab code

J. Tumblin, A. Agrawal & R. Raskar,  "Why I want a Gradient Camera", CVPR 2005 pdf

A. Agrawal & R. Chellappa, "Fusing Depth and Video using Rao-Blackwellized Particle Filter", First International Conference on Pattern Recognition and Machine Intelligence (PRMI), 2005 (oral presentation)    pdf

A. Agrawal & R. Chellappa, "Moving Object Segmentation and Dynamic Scene Reconstruction using Two Frames", IEEE ICASSP 2005 pdf   student paper contest winner

A. Agrawal & R. Chellappa, "Robust Ego-Motion Estimation and 3D Model Refinement in Scenes with Varying Illumination", IEEE MOTION 2005 (oral presentation pdf

A. Agrawal & R. Chellappa, "Robust Ego-Motion Estimation and 3D Model Refinement using Depth Based Parallax Model", IEEE ICIP, 2004 (oral presentation)  pdf

A. Agrawal & R. Chellappa, "3D Model Refinement using Surface-Parallax", IEEE ICASSP, 2004 pdf

H. Gupta, A. Agrawal, T. Pruthi, C. Shekhar & R. Chellappa, “An Experimental Evaluation of Linear and Kernel-Based Methods for Face Recognition”, IEEE WACV 2002 (oral presentationpdf



Contribution to Books

N. Vaswani, A. Agrawal, Q. Zheng & R. Chellappa, "Moving Object Detection and Compression in IR Sequences",  Chapter 5: Computer Vision beyond the Visible Spectrum, Springer. pdf



Miscellaneous


R. Raskar & A. Agrawal, "Handling Motion in Surveillance using Coded Exposure Camera", IEEE Conference on Technologies for Homeland Security 2007


R. Raskar, J. Tumblin, A. Mohan, A. Agrawal and Y. Li, "Computational Photography", State of Art Report, Eurographics, 2006


A. Agrawal, R. Meth & R. Chellappa “ Hierarchical DEM Refinement using Surface Parallax ”, 24th Army Science Conference, Orlando FL, 2004  

A. Agrawal & C. Shekhar, “Mapping Ground Video to Aerial DEM’s”, Advanced Decision Architectures, Collaborative Technology Alliances Conference 2003  pdf



Patents


Increasing object resolutions from a motion-blurred image’, U.S. Patent No. 7,639,289

Method for deblurring images using optimized temporal coding patterns’, U.S. Patent No. 7,580,620
Method and apparatus for acquiring HDR flash images’, U.S. Patent No. 7,454,136
Method and apparatus for enhancing flash and ambient images’, U.S. Patent No. 7,443,443
Method for Estimating Camera Settings Adaptively, U.S. Patent No. 7,403,707
Camera for directly generating a gradient image’, U.S. Patent No. 7,038,185
10+ Patent Applications pending