Super-resolution overlay in multi-projector displays

Details Super-resolution overlay in multi-projector displays Super-resolution overlay in multi-projector displays

2006-08-29

2006-08-29

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Miscellaneous

C353S030000, C353S031000, C353S069000, C353S070000, C353S094000, C353S121000, C348S744000, C348S745000, C348S807000

Reexamination Certificate

active

07097311

ABSTRACT:
A technique, associated system and computer executable program code, for projecting a superimposed image onto a target display surface under observation of one or more cameras. A projective relationship between each projector being used and the target display surface is determined using a suitable calibration technique. A component image for each projector is then estimated using the information from the calibration, and represented in the frequency domain. Each component image is estimated by: Using the projective relationship, determine a set of sub-sampled, regionally shifted images, represented in the frequency domain; each component image is then composed of a respective set of the sub-sampled, regionally shifted images. In an optimization step, the difference between a sum of the component images and a frequency domain representation of a target image is minimized to produce a second, or subsequent, component image for each projector.

REFERENCES:
patent: 6483555 (2002-11-01), Thielemans et al.
patent: 2002/0063807 (2002-05-01), Margulis
M. Elad and A. Feuer, “Restoration of Single Super-Resolution Image from Several Blurred, Noisy and Under Sampled Measured Images,”IEEE Transactions on Image Processing, vol. 6, No. 12, pp. 1646-1658 (Dec. 1997); {labeled “ATTACHMENT C” of applicants' provisional app. filed in Apr. 2003 as background information}.
A. Majumder and G. Welch, “Computer Graphics Optique: Optical Superposition of Projected Computer Graphics,”Fifth Immersive Projection Technology Workshop, Seventh Eurographics Workshop on Virtual Environments, Stuttgart, Germany Springer-Verlag (May 2001) 8 pages {labeled “ATTACHMENT D” of applicants' provisional appl filed in Apr. 2003}.
S. Baker and T. Kanade, “Limits on Super-Resolution and How to Break Them,”Int. Conf. Computer Vision&Pattern Recognition, vol. 2 (2000) pp. 372-379; {labeled “ATTACHMENT E” of applicants' provisional app. filed in Apr. 2003}.
R. Steele and Christopher Jaynes, “Monitoring and Correction of Geometric Distortion in Projected Displays,”Central European Conference on Computer Graphics and Computer Vision, (Feb. 4-8, 2002) {labeled “ATTACHMENT G” of applicants' provisional app. filed in Apr. 2003}.

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