San Jose

Sunil Hadap
Senior Research Manager

In addition to my own research contribution, I manage a small research group in Adobe's Advanced Technology Labs (ATL). My team focuses on the use of high-performance computing, available in desktops and notebooks (and tablets), to develop design paradigms and user experiences of the future. Some specific topics that the group focuses on are:

Animation — Inverse Kinematics, Skinning, Articulated Rigid Bodies
Simulation — Fluid Simulation, Viscoelastic Lattice-Boltzmann Simulation for Oil Paint, Rigid Bodies, Deformable Models & Cloth, Physically Based Curve Design
Computational Imaging — PDEs for Image Enhancement, Super-resolution, Inverse Problems in Image Processing, Deblurring and Defocus, Depth from Defocus, Lighting Estimation, Intrinsic Images, Shape from Shading, Image Relighting
Multi-CPU and GPU computations, Parallel Algorithms, Scheduling and Cache Performance

The research included 9 research internships, 6 university collaborations, 3 PhD topics. Product groups have shown a keen interest in these technologies. Initiatives such as Image Relighting, Intrinsic Images and Shape Estimation push the boundaries of Computational Imaging and are poised to revolutionize aspects of digital photography and content creation.

Under my leadership, consultation & mentoring, and through my direct research contribution, I shipped the following flagship product features

Graphics Math Library (GML), a SSE optimized small vector-matrix-quaternion library, CS4, CS5
Inverse Kinematics and Skinning, Flash Pro CS4
Physics for Flash, Flash Pro CS5
Bristle Brush, realistic simulation of artist’s brush on canvas, Photoshop & Illustrator CS5

You must have wondered how they did the hair in "Shrek The Third", the foliage in "Madagascar", and recently hair in "How to Train Your Dragon". Before joining Adobe, I worked at PDI/DreamWorks for four years (2003-2006) developing some cool special effects and character dynamics technologies — strand & hair dynamics, rigid bodies, particles and fluids.

I finished my PhD from MIRALab, University of Geneva in 2003.

CURRENT projects

Intrinsic Images (feature), Monocular Depth Perception (internship)

Publications

Jorge Lopez-Moreno, Jorge Jimenez, Sunil Hadap, Ken Anjyo, Erik Reinhard, Diego Gutierrez, “Non-photorealistic, Depth-based Image Editing”, Computer and Graphics, Volume 35, Issue 1, February, 2011
Stephen DiVerdi, Aravind Krishnaswamy, Sunil Hadap, “Industrial-Strength Painting with a Virtual Bristle Brush”, VRST 2010
Sunil Hadap, Steve DiVerdi, Aravind Krishnaswamy, “Bristle Tip and Mixer Brush”, Poster, NPAR 2010
Jorge Lopez-Moreno, Sunil Hadap, Erik Reinhard, Diego Gutierrez , “Compositing Images through Light Source Detection”, Computers and Graphics, Volume 34, Issue 6, December, 2010
Jorge Lopez-Moreno, Jorge Jimenez, Sunil Hadap, Erik Reinhard, Ken Anjyo and Diego Gutierrez, “Stylized Depiction of Images Based on Depth Perception”, Non-photorealistic Animation and Rendering (NPAR), 2010 Best Paper Award
Vinay P. Namboodiri, Subhasis Chaudhuri, Sunil Hadap, “Regularized Depth from Defocus”, ICIP 2008.
Sunil Hadap, “Oriented Strands - dynamics of stiff multi-body system”, ACM SIGGRAPH / Eurographics Symposium on Computer Animation, 2006
Sunil Hadap, Nadia Magnenat-Thalmann, “Rendering Photo-realistic Hair using Graphics Hardware”, Technical Report, 2003
Sunil Hadap, Nadia Magnenat-Thalmann, "Modeling Dynamic Hair as a Continuum", Computer Graphics Forum, Volume 20, Issue 3, Eurographics 2001 Proceedings, Manchester, United Kingdom, September 2001
Sunil Hadap and Nadia Magnenat-Thalmann. "Interactive Hair Styler based on Fluid Flow", Eurographics Workshop on Computer Animation and Simulation'2000, Interlaken 2000
Nadia Magnenat-Thalmann, Sunil Hadap, Prem Kalra. "State of the Art in Hair Simulation", International Workshop on Human Modeling and Animation, Seoul, Korea, June 28--29, 2000
Sunil Hadap, Endre Bangarter and Pascal Volino and Nadia Magnenat-Thalmann. "Animating Wrinkles on Clothes", IEEE Visualization '99, San Francisco 1999
Shrijeet Mukherjee, Manoj Apte, Amitay Isaacs, Sunil Hadap and Dr G R Shevare. "MultiBlock Grid Generation for Structured Grids", 5th International Conference on Numerical Grid Generation for Computational Fluid Simulation, April, 1996

Courses

Organizer — "Strands and Hair: Modeling, Animation, and Rendering", course 33, SIGGRAPH 2007
Organizer — "Introduction to Articulated Rigid Body Dynamics", course 2, SIGGRAPH 2005
Organizer — "Collision Detection and Proximity Queries", course 14, SIGGRAPH 2004
Presenter — "Photorealistic Hair Modeling, Animation, and Rendering", course 9, SIGGRAPH 2004
Presenter — "Photorealistic Hair Modeling, Animation, and Rendering", course 34, SIGGRAPH 2003

Thesis

Sunil Hadap, "Hair Simulation", PhD Dissertation, 2003
Sunil Hadap, "Design of Robotics Teaching Aid", Master of Design Thesis, 1995
Sunil Hadap, "Design of Weather Data Collection Platform", Master of Design Thesis, 1995
Sunil Hadap, "Multi-block Grid Generation Toolkit", Bachelor of Technology Thesis, 1993