Stephen B Webb

US Patent:

6859547, Feb 22, 2005

Filed:

Jan 25, 2003

Appl. No.:

10/351176

Inventors:

Paul S. Mostert - Lexington KY, US
Christopher O. Jaynes - Lexington KY, US
William B. Seales - Nicholasville KY, US
R. Matt Steele - Lexington KY, US
Stephen B. Webb - Lexington KY, US

Assignee:

The Mostert Group - Lexington KY

International Classification:

G06K009/00

US Classification:

382103, 382107, 348169

Abstract:

In a computer system, methods and computer-readable medium are disclosed for tracking motion of a subject in an activity captured by camera. The camera supplies pluralities of discrete images of the subject to a computing system environment. An event window, displayed on a monitor, has at least two cells for receiving a user input pertaining to an action of the subject in the activity. In a first of the two cells, the user indicates a specific image number corresponding to one of the plurality of discrete images and an estimate of a fractional percent thereof. In the second cell, the user indicates another specific image number and estimate of a fractional percentage thereof. Software calculates a delta between the specific image numbers and their corresponding estimated fractions. Scroll and position bars provide user-aid for navigating between discrete images. Example subjects include horses in a horse race activity while an action includes a horse stride length.

US Patent:

6975748, Dec 13, 2005

Filed:

Aug 13, 2004

Appl. No.:

10/918821

Inventors:

Paul S. Mostert - Lexington KY, US
Christopher O. Jaynes - Lexington KY, US
William B. Seales - Nicholasville KY, US
R. Matt Steele - Lexington KY, US
Stephen B. Webb - Lexington KY, US

Assignee:

The Mostert Group - Lexington KY

International Classification:

G06K009/00
H04N005/225

US Classification:

382103, 382107, 348169

Abstract:

In a computer system, methods and computer-readable medium are disclosed for tracking motion of a subject in an activity captured by camera. The camera supplies pluralities of discrete images of the subject to a computing system environment. An event window, displayed on a monitor, has at least two cells for receiving a user input pertaining to an action of the subject in the activity. In a first of the two cells, the user indicates a specific image number corresponding to one of the plurality of discrete images and an estimate of a fractional percent thereof. In the second cell, the user indicates another specific image number and estimate of a fractional percentage thereof. Software calculates a delta between the specific image numbers and their corresponding estimated fractions. Scroll and position bars provide user-aid for navigating between discrete images. Example subjects include horses in a horse race activity while an action includes a horse stride length.

US Patent:

7133083, Nov 7, 2006

Filed:

Dec 9, 2002

Appl. No.:

10/315377

Inventors:

Christopher O. Jaynes - Lexington KY, US
Stephen B. Webb - Lexington KY, US
Robert M. Steele - Lexington KY, US

Assignee:

University of Kentucky Research Foundation - Lexington KY

International Classification:

H04N 3/22

US Classification:

348745, 348189, 353 94

Abstract:

A technique and system for detecting a radiometric variation/artifacts of a front-projected dynamic display region under observation by at least one camera. The display is comprised of one or more images projected from one or more of a plurality of projectors; the system is preferably calibrated by using a projective relationship. A predicted image of the display region by the camera is constructed using frame-buffer information from each projector contributing to the display, which has been geometrically transformed for the camera and its relative image intensity adjusted. A detectable difference between a predicted image and the display region under observation causes corrective adjustment of the image being projected from at least one projector. The corrective adjustment may be achieved by way of pixel-wise approach (an alpha-mask is constructed from delta pixels/images), or bounding region approach (difference/bounding region is sized to include the area of the display affected by the radiometric variation). Also: a technique, or method, for detecting a radiometric variation of a display region under observation, as well as associated computer executable program code on a computer readable storage medium, therefor.

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:

7773827, Aug 10, 2010

Filed:

Feb 15, 2007

Appl. No.:

11/675236

Inventors:

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

Assignee:

Mersive Technologies, Inc. - Lexington KY

International Classification:

G06K 9/32

US Classification:

382293, 345630, 348E13022

Abstract:

A method of calibrating a multi-projector image display system is provided. According to the method, non-parametric calibration data for the display system is recovered and used to generate a non-parametric model of the display system. Local parametric models relating to the display surface of the projection screen are generated and are compared with data points defined by the non-parametric calibration data to identify one or more local errors in the non-parametric calibration data. The local errors in the non-parametric calibration data are converted to data points defined at least in part by the local parametric models and the projectors are operated to project an image on the image projection screen by utilizing a hybrid calibration model comprising data points taken from the non-parametric model and data points taken from one or more local parametric models. Additional embodiments are disclosed and claimed.

US Patent:

7866832, Jan 11, 2011

Filed:

Feb 15, 2007

Appl. No.:

11/675226

Inventors:

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

Assignee:

Mersive Technologies, LLC - Lexington KY

International Classification:

G03B 21/00

US Classification:

353121, 345 13, 348745, 353 94

Abstract:

The present invention relates to projection systems where multiple projectors are utilized to create respective complementary portions of a projected image. The present invention also relates to methods of calibrating and operating individual image projectors. According to one embodiment of the present invention, an attenuation map is generated for the projectors and pixel intensity values are established for the projectors by applying one or more intensity transfer functions to the attenuation maps. The intensity transfer functions are configured to at least partially account for the non-linear response of the output intensity of the projectors, as a function of an input intensity control signal applied to the projectors. 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.

Address:

546 Fillmore St, Denver, CO 80206

VIN:

4S4BP61C276320715

Make:

SUBARU

Model:

LEGACY

Year:

2007