Stephen H Webb

US Patent:

7740361, Jun 22, 2010

Filed:

Apr 20, 2007

Appl. No.:

11/737823

Inventors:

Christopher O. Jaynes - Lexington KY, US
Stephen B. Webb - Louisville KY, US

Assignee:

Mersive Technologies, Inc. - Lexington KY

International Classification:

G03B 21/00
G03B 21/26
G09G 5/00

US Classification:

353122, 353 30, 353 94, 345 13

Abstract:

The present invention relates to projection systems where one or more projectors are utilized to project a video, a still image, or combinations thereof. More particularly, the present invention relates to methods of calibrating and operating such systems. According to one embodiment of the present invention, a method of operating an image display system is provided. According to the method, one or more image sensors acquire respective overlapping portions I, Iof a projected image. Screen position coordinates for image fiducials in the first and second portions I, Iof the projected image are identified and used to establish first and second sets of distance metrics D, Dfor the first and second portions of the projected image. A global point set is constructed from the first and second sets of distance metrics D, D. Global points within a region where the first and second portions I, Iof the projected image overlap are derived from only one of the first and second sets of distance metrics D, D.

US Patent:

7763836, Jul 27, 2010

Filed:

Apr 20, 2007

Appl. No.:

11/737817

Inventors:

Stephen B. Webb - Louisville KY, US
Christopher O. Jaynes - Lexington KY, US

Assignee:

Mersive Technologies, Inc. - Lexington KY

International Classification:

H01L 27/00

US Classification:

2502081, 2505591

Abstract:

The present invention relates to projection systems. According to one embodiment the system comprises one or more projectors oriented to project an image on a projection screen and one or more image sensors oriented to acquire an image projected on the projection screen. The projector is operated to project a calibration image comprising one or more image fiducials on the image projection screen. The image sensor acquires the projected calibration image including the image fiducials. The respective positions of the image fiducials are identified and the identified fiducial positions are validated by applying a parametric model to compare respective ones of the identified fiducial positions with corresponding approximations of the identified fiducial positions. Corrected fiducial positions are generated when a result of one of the comparisons exceeds an error threshold. Additional embodiments are disclosed and claimed.

US Patent:

7893393, Feb 22, 2011

Filed:

Apr 20, 2007

Appl. No.:

11/737821

Inventors:

Stephen B. Webb - Louisville KY, US
Christopher O. Jaynes - Lexington KY, US

Assignee:

Mersive Technologies, Inc. - Lexington KY

International Classification:

H01L 27/00
G03B 21/00
G03B 21/14

US Classification:

2502081, 353121, 353 48, 353 69

Abstract:

A method and system for calibrating and operating projection systems where one or more projectors are utilized to project an image. One or more projectors are oriented to project an image on a projection screen and one or more image sensors are oriented to acquire the projected image. Three-dimensional position coordinates of the respective image fiducials as projected on the screen are identified by applying three-dimensional mapping functions to represent the manner in which two-dimensional points in a projector frame map to three-dimensional points on the projection screen. Parametric functions are fit to a neighborhood of points representing the three-dimensional image fiducial position coordinates and corresponding parametric models are generated. The projectors are then operated in accordance with geometric calibration data generated from validation and correction of the fiducial coordinates.

US Patent:

20070242240, Oct 18, 2007

Filed:

Apr 13, 2007

Appl. No.:

11/735258

Inventors:

Stephen Webb - Louisville KY, US
Christopher Jaynes - Lexington KY, US

Assignee:

MERSIVE TECHNOLOGIES, INC. - Lexington KY

International Classification:

G03B 21/00

US Classification:

353121000

Abstract:

The present invention relates to multi-projector image rendering systems and methods for their operation. According to the present invention, a plurality of image projectors are coupled to an image processor and the system utilizes specialized image processing methodology to render an output image that is composed of pixels collectively rendered from the plural image projectors. As a result, the resolution of the rendered video can exceed the video resolution that would be available from a single projector.