Aruna B Kumar

US Patent:

6556709, Apr 29, 2003

Filed:

Dec 30, 1998

Appl. No.:

09/223550

Inventors:

Aruna Kumar - Camas WA

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06K 900

US Classification:

382165, 382199

Abstract:

A method for characterizing objects within an image is presented. According to an embodiment of the present invention, a representative color of an object is first identified from an image. The contour of this same object is then determined by identifying regions of the image where the identified color changes to another color. Color and contour data from other images of the same object may be obtained using the above described method to compile a ranges of colors and a range contours which represent the object. This color and contour data (known as the âobject signatureâ) is then associated with a name for this particular object and stored. Once an object signature has been defined for a particular object, a database of images may be searched to identify images which include objects matching the object signature. For example, once an object signature for a mountain is determined, this object signature may be used to search a database for all images which include a mountain.

US Patent:

6952485, Oct 4, 2005

Filed:

Sep 11, 2000

Appl. No.:

09/659125

Inventors:

Clayton L. Davidson - Lake Oswego OR, US
Aruna B. Kumar - Camas WA, US

Assignee:

Digimarc Corporation - Beaverton OR

International Classification:

G06K009/00

US Classification:

382100, 358 328, 380 42, 713176

Abstract:

The disclosure details methods and systems for watermark encoding and decoding in imaging devices, such as printers and scanners, and imaging device interfaces. Watermark encoding and decoding functions are incorporated into printer and scanner image processing pipelines. Watermark encoders and decoders perform watermark encoding and decoding, respectively, on an image as it is being transferred from one stage of a printing or scanning process to another. In particular, streaming mode watermark encoders and decoders operate on sequential portions of the image in a sequential image stream passing from one stage to another. The streaming mode encoder and decoder may be incorporated in a printer or scanner driver in a computer connected to a printer or scanner peripheral or within a printer or scanner device.

US Patent:

6985600, Jan 10, 2006

Filed:

Mar 15, 2001

Appl. No.:

09/811366

Inventors:

Geoffrey B. Rhoads - West Linn OR, US
Aruna B. Kumar - Camas WA, US
Trent J. Brundage - Tigard OR, US
Brett T. Hannigan - Portland OR, US
Tony F. Rodriguez - Portland OR, US
J. Scott Carr - Beaverton OR, US

Assignee:

Digimarc Corporation - Beaverton OR

International Classification:

H04K 1/00

US Classification:

382100, 283 72

Abstract:

Stationery, or other printable media, is encoded with a digital watermark. The watermark is not conspicuous to a human observer of the media, yet conveys plural bits of auxiliary information when optically scanned and digitally processed. The watermark can be formed by ink-jet printing, or otherwise. The encoded information can be used for various purposes, including authenticating the document as an original, linking to associated on-line resources, and distinguishing seemingly-identical versions of the same document (document serialization).

US Patent:

7136502, Nov 14, 2006

Filed:

Feb 3, 2005

Appl. No.:

11/051442

Inventors:

Geoffrey B. Rhoads - West Linn OR, US
Aruna B. Kumar - Camas WA, US
Trent J. Brundage - Tigard OR, US
Brett T. Hannigan - Menlo Park CA, US
Tony F. Rodriguez - Portland OR, US
J. Scott Carr - Tualatin OR, US

Assignee:

Digimarc Corporation - Beaverton OR

International Classification:

H04K 1/00

US Classification:

382100, 283 72

Abstract:

Stationery, or other printable media, is encoded with a digital watermark. The watermark is not conspicuous to a human observer of the media, yet conveys plural bits of auxiliary information when optically scanned and digitally processed. The watermark can be formed by ink-jet printing, or otherwise. The encoded information can be used for various purposes, including authenticating the document as an original, linking to associated on-line resources, and distinguishing seemingly-identical versions of the same document (document serialization).

US Patent:

7306342, Dec 11, 2007

Filed:

Mar 7, 2005

Appl. No.:

11/074490

Inventors:

Angus Wu - Corvallis OR, US
Anurag Gupta - Corvallis OR, US
Aruna Kumar - Corvallis OR, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G03B 21/20
F21V 7/00

US Classification:

353 98, 353122, 353102, 362341, 362347

Abstract:

A reflector includes a body that defines an optical surface. A reflective surface is disposed on the optical surface including a stack of dielectric layers defining at least one notch filter.

US Patent:

7657057, Feb 2, 2010

Filed:

Oct 4, 2005

Appl. No.:

11/244429

Inventors:

Clayton L. Davidson - Lake Oswego OR, US
Aruna B. Kumar - Camas WA, US

Assignee:

Digimarc Corporation - Beaverton OR

International Classification:

G06K 9/00

US Classification:

382100, 713176

Abstract:

The disclosure details methods and systems for watermark encoding and decoding. In one implementation a method is provided to detect steganographic indicia embedded in a streaming media signal. The method includes receiving a streaming media signal; caching selected portions of the streaming media signal; detecting steganographic indicia from cached portions of streaming content; and carrying out an action based at least in part on detection of the steganographic indicia. Additional solutions, methods and implementations are detailed in the disclosure.

US Patent:

8126201, Feb 28, 2012

Filed:

Feb 2, 2010

Appl. No.:

12/698651

Inventors:

Clayton L. Davidson - Lake Oswego OR, US
Aruna B. Kumar - Camas WA, US

Assignee:

Digimarc Corporation - Beaverton OR

International Classification:

G06K 9/00

US Classification:

382100, 382181, 382190, 382232, 382305, 382307

Abstract:

This patent document details, e. g. , claims and systems for watermark decoding from streaming media signals. One claim recites an apparatus comprising: electronic memory for buffering a streaming media signal; one or more electronic processors programmed for: ranking buffered portions of the media signal in terms of their ability to hide steganographic indicia; detecting steganographic indicia from relatively higher-ranked portions of the streaming media signal before attempting to detect from relatively lower-ranked portions; and carrying out an action based at least in part on detection of the steganographic indicia. Of course, other claims and disclosure are provided too.

US Patent:

20040179735, Sep 16, 2004

Filed:

Mar 13, 2003

Appl. No.:

10/386487

Inventors:

Aruna Kumar - Camas WA, US

International Classification:

G06K009/46
G06F007/00

US Classification:

382/190000, 707/003000

Abstract:

A method for characterizing objects within an image is presented. According to an embodiment of the present invention, a representative color of an object is first identified from an image. The contour of this same object is then determined by identifying regions of the image where the identified color changes to another color. Color and contour data from other images of the same object may be obtained using the above described method to compile a range of colors and a range contours which represent the object. This color and contour data (known as the “object signature”) is then associated with a name for this particular object and stored. Once an object signature has been defined for a particular object, a database of images may be searched to identify images which include objects matching the object signature. For example, once an object signature for a mountain is determined, this object signature may be used to search a database for all images which include a mountain.