Ali Zandifar, Ph.D.
Lead Computer Vision Scientist
Affine Systems, San Francisco, CA
alizandusa@gmail.com
Research Statement
CV
- Interactive video analytics, Object detection, machine learning, video content filtering and
benchmark design, video-source quality detection
- Interactive video analytics, large-scale internet-based vision, video annotation, video
fingerprinting, image segmentation, object tracking and detection, and benchmark design
- Visible watermarking of document images
- Invisible watermarking of English/Japanese
- GPS data compression and decompression
- Vision-based microscopic PCB inspection, diagnosis and cure at industrial ink-jet printing
technology applications
- Geometric and illumination distortion of scanned images of bound/flat English/Japanese
documents
- Easy single/multiple camera calibration with minimal user effort
Issued patents:
- Ali Zandifar and Anoop Bhattacharjya, “Fast imaging system calibration”, EPSON R&D Inc., US
Patent filed Ser. No 11/260,964.
Published patents:
- Ali Zandifar and Anoop Bhattacharjya, “Distortion correction of a captured image”, EPSON R&D
Inc., US Patent filed Ser. No. 11/679,664.
- Ali Zandifar and Anoop Bhattacharjya, “Distortion correction of a scanned image”, EPSON R&D
Inc., US Patent filed Ser. No. 11/679, 648.
- Ali Zandifar and Anoop Bhattacharjya, “Low Memory Auto-Focus and Exposure System for Large
Multi-Frame Image Acquisition", EPSON R&D Inc., US Patent filed Ser. No. 11/ 778968.
- Ali Zandifar, “Characterization of a printed droplet”, Epson R&D Inc., US Patent filed Ser. No.
11/85154.
- Ali Zandifar, Che-bin Liu and Jing Xiao, “Embedding data in images”, Epson R&D Inc., US Patent
filed Ser. 11/945853 .
- Ali Zandifar, Che-bin Liu and Jing Xiao, “Extracting data from images”, EPSON R&D Inc., US
Patent filed Ser. 11/944288.
- Ali Zandifar and Che-bin Liu, “Identifying embedded data in an image”, US Patent filed Ser.
11/945139.
- Ali Zandifar and Jing Xiao, “Identifying steganographic data in an image”, US Patent Ser.
11/942464.
- Ali Zandifar and Jing Xiao, “Segmenting a string using similarity values”, Epson R&D Inc., US
Patent filed Ser. 11/943285 .
- Ali Zandifar and Jing Xiao, “String reconstruction using multiple strings”, Epson R&D Inc., US
Patent filed Ser. 11/948410.
- Ali Zandifar, “Simulation of dot-pattern bitmap", Epson R&D Inc., US Patent filed Ser. 12/031217.
- Ali Zandifar, Jing Xiao and Kar-han Tan, "Image capture and calibration", Epson R&D Inc., US
Patent Ser. 12/177700.
- Ali Zandifar and Kar-han Tan, "Fault detection of a printed droplet", Epson R&D Inc., US Patent
Ser. 12/178123.
- Ali Zandifar, Jing Xiao and Kar-han Tan, “Image capture, alignment and registration”, Epson R&D
Inc., US Patent Ser. 12/179324.
Filed patents:
- Ali Zandifar, Gilles De Victor, Alex Bronstein and Michael Bronstein, “Hypervide annotation”,
Novafora Inc, filed in Feb 2009.
- Ali Zandifar, A. Chahine, R. Duraiswami and L. S. Davis, ’Video-based Interface to Textual
Information for the Visually Impaired’, IEEE int. conf. at multimodal interfaces, 2002.
- Ali Zandifar, Ser-Nam Lim, N. Gumerov and R. Duraiswami,’Fast Evaluation of Thin Plate Spline
(TPS) in Computer Vision’, IEEE int. conf. of image processing, ICIP 2004.
- N. Gumerov, Ali Zandifar, R. Duraiswami and L. S. Davis, `Structure of Applicable Surfaces from
Single Views’,ECCV 2004.
- Ali Zandifar, R. Duraiswami and L. S. Davis,`Video-based Framework for Analysis of
Presentations/Posters’ , Int. journal of document analysis and rectification (IJDAR), Nov 2004.
- N. Gumerov, Ali Zandifar, R. Duraiswami and L. S. Davis, “3D Structure Recovery and Unwarping
Surfaces Applicable to Planes”, Int. journal of computer vision (IJCV), Dec 2004.
- Ali Zandifar, “Unwarping scanned image of Japanese/English documents”, Int. Conf. on Image
analysis and processing (ICIAP) 2007.
- Ph.D. Thesis, "Computer vision for scene text analysis", Ph.D. Thesis, Advisors: Prof. Rama
Chellappa, Dr. Ramani Duraiswami and Prof. Larry S. Davis, University of Maryland, Aug 2004.
- Master Thesis, "Position estimation of a moving object via optical method using extended
Kalman filtering by pseudo measurements", Advisor: Prof. M.A. Massoumnia, Sharif University of
Tech., May 1996.

Visitors: