John A Huffman

US Patent:

6556724, Apr 29, 2003

Filed:

Nov 24, 1999

Appl. No.:

09/449112

Inventors:

Paul Joseph Chang - Allison Park PA
John C. Huffman - Menlo Park CA
Bradford V. Hebert - Piedmont CA

Assignee:

Stentor Inc. - Brisbane CA
University of Pittsburgh - Pittsburgh PA

International Classification:

G06K 954

US Classification:

382299, 382305, 382298, 382128, 345 12, 345 33, 348 1412, 707526, 707516

Abstract:

An image collaboration system conducts resolution independent image collaboration among a host computer and participating client computers. The subject of the image collaboration involves at least one source image. The source image is transformed into a hierarchical representation, such that each level of the hierarchical representation is sufficient to reconstruct the source image at a given resolution. The host computer displays, at a first resolution, an image based on one or more of the source images. To conduct the resolution independent image collaboration, the host computer generates a resolution independent description of the image, which describes the first display image relative to the source image, and broadcasts the resolution independent description of the image to the participating clients. In response, the participating clients generate an image from the resolution independent description of the image at the host computer at a resolution sufficient for display at the participating clients. Resolution independent image collaboration for use in a medical informatics system is also disclosed.

US Patent:

6938211, Aug 30, 2005

Filed:

Nov 24, 1999

Appl. No.:

09/449015

Inventors:

Paul Joseph Chang - Allison Park PA, US
John C. Huffman - Menlo Park CA, US
Benjamin J. McCurtain - San Francisco CA, US
Jonathan Reis - Los Gatos CA, US
Bradford V. Hebert - Piedmont CA, US

Assignee:

University of Pittsburgh of the Common Wealth System of Higher Education - Pittsburgh PA
Stentor, Inc. - Brisbane CA

International Classification:

G09G005/00

US Classification:

715733, 715744, 715748, 709203

Abstract:

An image transfer object is disclosed that provides the necessary mechanism to conduct a dynamic transfer operation. The image transfer object includes a static reference to dynamic data. The image data is “dynamic”, in that the user may request additional views of the image. An image recipient computer receives the static reference to identify a source image on a server, and generates a first request, based on the static reference, for a view of the source image to the server. In response, the server transmits data to the image recipient computer. The image recipient computer displays the first view of the source image for viewing by the user. The user may then select a different portion of the source image, and/or a different resolution to designate a second view of the source image. The image recipient computer generates a second request to the image server for the second view, and the image server transmits additional data to generate the second view of the source image. Thereafter, the second view of the source image is displayed at the image recipient computer.