David L Jacobs

US Patent:

6853745, Feb 8, 2005

Filed:

Nov 3, 2000

Appl. No.:

09/705507

Inventors:

David W. Jacobs - Princeton NJ, US
Ronen Basri - Rehovot, IL

Assignee:

NEC Laboratories America, Inc. - Princeton NJ

International Classification:

G06K009/00
G06K009/46
G06K009/62

US Classification:

382154, 382118, 382190, 382224

Abstract:

A method for choosing an image from a plurality of three-dimensional models which is most similar to an input image is provided. The method includes the steps of: (a) providing a database of the plurality of three-dimensional models; (b) providing an input image; (c) positioning each three-dimensional model relative to the input image; (d) for each three-dimensional model, determining a rendered image that is most similar to the input image by: (d)(i) computing a linear subspace that describes an approximation to the set of all possible rendered images that each three-dimensional model can produce under all possible lighting conditions where each point in the linear subspace represents a possible image; and one of (d)(ii) finding the point on the linear subspace that is closest to the input image or finding a rendered image in a subset of the linear subspace obtained by projecting the set of images that are generated by positive lights onto the linear subspace; (e) computing a measure of similarly between the input image and each rendered image; and (f) selecting the three-dimensional model corresponding to the rendered image whose measure of similarity is most similar to the input image. Step (d) is preferably repeated for each of a red, green, and blue color component for each three-dimensional model. The linear subspace is preferably either four-dimensional or nine-dimensional.

US Patent:

6900805, May 31, 2005

Filed:

Aug 29, 2002

Appl. No.:

10/230888

Inventors:

Karvel K. Thornber - Berkeley Heights NJ, US
David W. Jacobs - Bethesda MD, US

Assignee:

NEC Laboratories America, Inc. - Princeton NJ

International Classification:

G06T015/00

US Classification:

345426

Abstract:

The Torrance-Sparrow model of off-specular reflection is recast in a significantly simpler and more transparent form in order to render a spherical-harmonic decomposition more feasible. By assuming that a physical surface consists of small, reflecting facets whose surface normals satisfy a normal distribution, the model captures the off-specular enhancement of the reflected intensity distribution often observed at large angles of incidence and reflection, features beyond the reach of the phenomenological broadening models usually employed. In passing we remove a physical inconsistency in the original treatment, restoring reciprocity and correcting the dependence of reflectance on angle near grazing incidence. It is noted that the results predicted by the model are relatively insensitive to values of its one parameter, the width of the distribution of surface normals.

US Patent:

7006684, Feb 28, 2006

Filed:

Feb 28, 2002

Appl. No.:

10/085750

Inventors:

Karvel K. Thornber - Berkeley Heights NJ, US
David W. Jacobs - Princeton NJ, US

Assignee:

NEC Laboratories America, Inc. - Princeton NJ

International Classification:

G06K 9/00

US Classification:

382154, 382118, 382190, 345426

Abstract:

The present invention is a method of deriving a reflectance function that analytically approximates the light reflected from an object model in terms of the spherical harmonic components of light. The reflectance function depends upon the intensity of light incident at each point on the model, but excludes light originating from below a local horizon, therefore not contributing to the reflectance because of the cast shadows. This reflectance function is used in the process of machine vision, by allowing a machine to optimize the reflectance function and arrive at an optimal rendered image of the object model, relative to an input image. Therefore, the recognition of an image produced under variable lighting conditions is more robust. The reflectance function of the present invention also has applicability in other fields, such as computer graphics.

US Patent:

7058217, Jun 6, 2006

Filed:

Sep 28, 2001

Appl. No.:

09/967206

Inventors:

Karvel K. Thornber - Berkeley Heights NJ, US
David W. Jacobs - Princeton NJ, US

Assignee:

NEC Laboratories America, Inc. - Princeton NJ

International Classification:

G06K 9/00

US Classification:

382154, 382115, 382118, 382209

Abstract:

The present invention is a method of deriving a reflectance function that analytically approximates the light reflected from an object model in terms of the spherical harmonic components of light. The reflectance function depends upon the intensity of light incident at each point on the model, the intensity of light diffusely reflected, and the intensity of light broadened-specularly reflected in the direction of an observer. This reflectance function is used in the process of machine vision, by allowing a machine to optimize the reflectance function and arrive at an optimal rendered image of the object model, relative to an input image. Therefore, the recognition of an image produced under variable lighting conditions is more robust. The reflectance function of the present invention also has applicability in other fields, such as computer graphics.

US Patent:

D665821, Aug 21, 2012

Filed:

Nov 15, 2011

Appl. No.:

29/406501

Inventors:

Michael Capko - Conshohocken PA, US
David Andrew Jacobs - North Wales PA, US
Timothy K. Keighron - Rochester Hills MI, US
Jongkyu Kim - Troy MI, US
James J. Kempf - Canton MI, US

Assignee:

Rbmark, Inc. - Wilmington DE

International Classification:

1501

US Classification:

D15 5

US Patent:

D697943, Jan 21, 2014

Filed:

Jul 27, 2012

Appl. No.:

29/428268

Inventors:

Michael Capko - Conshohocken PA, US
David Andrew Jacobs - North Wales PA, US
Timothy K. Keighron - Rochester Hills MI, US
Jongkyu Kim - Troy MI, US
Donald T. Carbone - Rochester Hills MI, US

Assignee:

RBMark, Inc. - Wilmington DE

International Classification:

1501

US Classification:

D15 5

US Patent:

42547180, Mar 10, 1981

Filed:

Oct 23, 1979

Appl. No.:

6/095751

Inventors:

Abram N. Spanel - Princeton NJ
David R. Jacobs - New Canaan CT

International Classification:

D05C 1500

US Classification:

112 79R

Abstract:

A tufting method and apparatus for tufting yarn to a backing layer, including individual tufting elements, comprising, means to control forward and lateral displacement of successive needle strokes. A preferred embodiment includes means to select particular yarns for tufting from a plurality of yarns and means to select the length of yarn to be tufted. In a further preferred embodiment a reduced number of tufting elements is contemplated with the elements spaced so as to enable the production of a full sized tufted product by lateral shifting of the backing layer to provide for intermediate tufting positions.

US Patent:

40648168, Dec 27, 1977

Filed:

Jun 25, 1976

Appl. No.:

5/700413

Inventors:

Abram N. Spanel - Princeton NJ
P. Frank Eiland - Stamford CT
David R. Jacobs - New Canaan CT

International Classification:

D05C 1516

US Classification:

112 79A

Abstract:

A double select needle tufting machine or the like utilizing a driving and selecting means comprising band-like members attached to each of said needles with each band-like member being selectively engageable with an oscillatory shaft by which each of the needles is driven when selected. Two-color carpets or bedspreads are produced by threading one series of needles with one color yarn and the other series of needles with a second color of yarn.

Address:

2606 Holly Bch Rd, Essex, MD 21221

VIN:

1D8HB48227F532403

Make:

DODGE

Model:

DURANGO

Year:

2007