Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2011-01-18
2011-01-18
Shankar, Vijay (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S156000, C345S157000, C345S166000
Reexamination Certificate
active
07872637
ABSTRACT:
A system and method for tracking a laser spot on a projected computer screen image computes a projective transformation matrix using the projected computer screen image electronically captured in a frame of image data. The projective transformation matrix is computed by fitting a polygon to a contour of each graphical object in the frame of image data and determining whether the polygon for each graphical object satisfies a set of predefined parameters to find a candidate polygon that corresponds to an outline of the projected computer screen image in the frame of image data.
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patent: 2005/0024341 (2005-02-01), Gillespie et al.
Xinpeng Huang and William Putnam, “Laser Pointer Mouse”, 6.111; Introductory Digital Systems Laboratory. May 18, 2006.
Dan R. Olsen Jr. and Travis Nielsen, “Laser pointer interaction”, Computer Science Department, Brigham Young University, Provo, UT, CHI Publication, vol. No. 3, Issue No. 1, pp. 17-22, Mar. 31, 2001.
Evgeny Popovich and Zachi Karni, “PresenterMouse LASER-Pointer Tracking System,” www.mpi-inf.mpg.de/˜karni/presentermouse/report.pdf, 2006 (estimate).
Rahul Sukthankar, Robert G. Stockton and Matthew D. Mullin, “Automatic Keystone Correction for Camera-assisted Presentation Interfaces”, appears in: Advances in Multimodal Interfaces—Proceedings of ICMI 2000.
Dolfi David
Seeman Lisa
Avago Technologies ECBU (IP) Singapore Pte. Ltd.
Shankar Vijay
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