Camera-pen-tip mapping and calibration

Details Camera-pen-tip mapping and calibration Camera-pen-tip mapping and calibration

2006-11-14

2006-11-14

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

C178S019050

Reexamination Certificate

active

07136054

ABSTRACT:
X-y positions of a digital pen's tip may be determined by using a calibration parameter to map the x-y positions of the respective centers of images captured by the pen's camera. The calibration parameter may be generated by iteratively calculating estimates of the calibration parameter. Calibration input data may be produced by a user placing the pen tip in a fixed location on a surface, which may be a positionally encoded medium, such as paper, and then rotating the pen and/or moving the opposite end of the pen in various directions to capture multiple images for use in generating the calibration parameter. A user may perform such a calibration procedure without the need for complicated calibration equipment typically used in connection with conventional calibration techniques.

REFERENCES:
patent: 5146552 (1992-09-01), Cassorla et al.
patent: 5414227 (1995-05-01), Schubert et al.
patent: 5581637 (1996-12-01), Cass et al.
patent: 5581682 (1996-12-01), Anderson et al.
patent: 5626620 (1997-05-01), Kieval et al.
patent: 5855594 (1999-01-01), Olive et al.
patent: 6044301 (2000-03-01), Hartlaub et al.
patent: 6208894 (2001-03-01), Schulman et al.
patent: 6492981 (2002-12-01), Stork et al.
patent: 6551357 (2003-04-01), Madduri
patent: 2001/0037132 (2001-11-01), Whitehurst et al.
patent: 2003/0081000 (2003-05-01), Watanabe et al.
patent: 2003/0117378 (2003-06-01), Carro
patent: 2002-108551 (2002-04-01), None
patent: WO 99/60469 (1999-11-01), None
C. Decurtins, M.C. Norrie, and B. Signer, “Digital Annotation of Printed Documents”, CIKM '03 Nov. 3-8, 2003, New Orleans, Louisiana, pp. 552-555□.
I. Dumer, D. Micciancio and M. Sudan, “Hardness of Approximating the Minimum Distance of a Linear Code”, 1999 IEEE, pp. 475-484□.
D. Clark and L. Weng, “Maximal and Near-Maximal Shift Register Sequences: Efficient Event Counters and Easy Discrete Logarithms” (pp. 1-23), IEEE Transaction on Computers 43, 5 (May 1994), pp. 560-568□.
G. Golovchinsky and L. Denoue, “Moving Markup: Repositioning Freeform Annotations”, UIST '02, Oct. 27-30, 2002, Paris, France, vol. 4, Issue 2, pp. 21-24□.
A.J. Brush, D. Bargeron, A. Gupta and JJ Cadiz, “Robust Annotation Positioning in Digital Documents”, SIGCHI '01, Mar. 31-Apr. 4, 2001, Seattle, Washington, pp. 285-292□.
Okad, et al, “A Method for Docmuent Digitizer by Real Time Assembling of Mosaic Pictures”, Scripta Publishing Co., Systems, Computers, Controls. vol. 13, No. 5, Sep. 1982, pp. 74-80.

Affiliated with

Also associated with

Rating

Camera-pen-tip mapping and calibration does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Camera-pen-tip mapping and calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera-pen-tip mapping and calibration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3641172