Todor Georgiev

Sr. Research Scientist, Photoshop Group, Adobe Systems
tgeorgie at adobe dot com

Representative Publications on "Light Fields"

• Georgiev, T., Intwala, C., Babakan, S., Lumsdaine, A., Unified Frequency Domain Analysis of Lightfield Cameras, ECCV 2008. Presentation slides and Image data and Videos.

• Lumsdaine, A., Georgiev, T., “Full Resolution Lightfield Rendering”, Adobe Tech Report, January 2008. We show that 500 times increase in the resolution of the plenoptic camera is possible! Related CVPR presentation on Plenoptic Camera 2.0 (or Vario-Plenoptic Camera). Diagram of the camera.

  Data: Flat lightfield data (conventional 2D images) available for experimentation: A crop and full data. Note that those files are big!

  Demos: Comparison with Lightfield Rendering (Keplerian plenoptic 2.0 camera). A video shows more detail.

Refocusing (Galilean plenoptic 2.0 camera). Changing viewpoint (Keplerian plenoptic 2.0 camera). UTube video, and better quality of the same video.

• Adobe presentation: 100 Years Light-Field



• Adobe Tech Report, April 2007 Lightfield Capture by Frequency Multiplexing. Careful theoretical derivation of what MERL authors call "Dappled Photography" and "Heterodyning". Proving that frequency multiplexing works for both mask-based and microlens-based cameras. This is a new result. It shows that the approach is truly universal: It's not a special "heterodyning" type of camera, but a "heterodyning" method of processing the data, applicable to any camera! Also, proposing a new "mosquito net" camera. And much more (wave artifact removal, F/number analysis). Examples.

• Georgiev, T., Zheng, C., Nayar, S., Curless, B., Salesin, D., Intwala, C., Spatio-angular Resolution Trade-offs in Integral Photography, EGSR 2006. My presentation slides and Videos. Brian's presentation slides.

• Georgiev, T., Light Field Camera Demo, ECCV 2006.

• Georgiev, T., Intwala, C.,Tech Report on Integral View Photography Adobe, February 2006.

• Georgiev, T., “Compound Eye Camera”, Tech Report, October 2004.

• Georgiev, T., Nikolov, P., “ Light Field Geometry”, Theoretical paper with Petko, April 2004

CVPR Tutorial: Theory and Methods of Light-Field Photography

Eurographics Tutorial: Radiance Photography

SIGGRAPH: Computational Photography (mathematical section)

Representative Publications Related to the Healing Brush

• Georgiev, T., “Relighting, Retinex Theory and Perceived Gradients.” Mirage 2005, INRIA,  Ricquencourt, France, March 2005.

• Georgiev, T., “Image Reconstruction Invariant to Relighting”, EUROGRAPHICS 2005.

• Georgiev, T., Presentation at Computational Photography 2005

• Georgiev, T., “Covariant Derivatives and Vision”, ECCV 2006. Presentation slides with MP3 sound file. Also, here is a related paper on Bilateral filter

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Image Inpainting

Poisson Image Editing

Publicity