Abhinav Dayal                      

Northwestern University, Computer Graphics Group


abhinav at cs dot northwestern dot edu

Date of birth  :March 11, 1978

Gender           : Male

1890 Maple Ave #226, Evanston, IL 60201


Ph: 847-467-0272









Ph.D. Computer Science (pending)

Northwestern Univ. (advisor: Dr. Ben Watson)


M.Tech Computer Science (Dec 2000)

Indian Institute of Technology, Delhi


B. E. Computer Science (June, 1996)

Birla Institute of Technology, Ranchi, India




Programming Languages


Graphics and Image Processing Libraries

OpenGL, ImageMagick


Windows, Linux, Unix, Irix, Sun OS



2001: Suresh Chandra Memorial award for best Masters Thesis at IIT, Delhi.

2000: Secured 1st rank in Department of Computer science at master’s level in IIT, Delhi.

1999: Secured 1st rank in Department of Computer Science at bachelor’s level in BIT, Ranchi.

1995: Secured Rank 2451 in nationwide IIT-JEE entrance exam amongst 150,000 participents.

1994, 1992: Merit certificate for Indian national mathematics Olympiad.

1993: Finalist in National Talent Search Examination (among top 2000 in the country).


“Interruptible Rendering”, Proceedings of the ACM SIGGRAPH 2003 Symposium on Interactive 3D Graphics, page 143-151. Cliff Woolley, David Luebke, Benjamin Watson and Abhinav Dayal.

Improving Frameless Rendering by Focusing on Change”, Tech Sketch, ACM SIGGRAPH 2002. Abhinav Dayal and Benjamin Watson.

Temporally Adaptive Rendering”, paper in preparation on our current work on frameless rendering.


Major Academic Projects & Research work


Temporally Adaptive Rendering (pursuing under Dr. Ben Watson in collaboration with Univ. Virginia): The aim of this project is to improve interactive rendering accuracy, responsiveness and portability. To be more flexible we use frameless rendering that can respond to change in an interactive setup, with very little delay, and at any location in the image, because it samples time per pixel. We realize rendering as a feedback control loop and rather than a purely stochastic sampling in space we control sampling and reconstruction adaptively to maximize accuracy. While sampling is done primarily in software the reconstruction is being designed in hardware using NVIDIA GPUs.


Interruptible Rendering (Done under Dr. Ben Watson in collaboration with Univ. Virginia): The goals of this project were also to increase the accuracy and portability of interactive rendering. It achieved this by the fidelity vs. performance tradeoff ubiquitous in real-time double-buffered rendering. It unifies spatial and temporal error in image space and attempts to maintain a minimum error image on display. Different rendering algorithms were adapted for interruptible use. NVIDIA hardware and extensions were used to speed up the rendering, primarily alpha blending and textured splatting.


Hybrid Octree based Dynamic Scene Rendering and Collision Detection (Masters Thesis under Dr. Sanjeev Kapoor): Exploiting the features of octrees for hierarchical scene partitioning, editing and retrieval, the aim is to enhance interactive rendering of polygonal 3D scenes involving scene culling and collision detection. This project was adjudged best for the academic year 2000 in the department of Computer Science, and was acquired by Escosoft Ltd, a subsidiary of Escorts, a leading group in India, to be incorporated in their new gaming engine.


Designing a Fractal Texture Composer (B.E. Thesis under Dr. P. K. Mohanty): The aim of the project was to use fractal graphics for interactively designing fractal textures with a intuitive user interface and a variety of mathematical functions.


Dr. Ben Watson

Assistant Professor, Northwestern University

Dr. Jack Tumblin

Assistant Professor, Northwestern University

Dr. Bruce Gooch

Assistant Professor, Northwestern University