Qian Chen

US Patent:

7224357, May 29, 2007

Filed:

May 3, 2001

Appl. No.:

09/848773

Inventors:

Qian Chen - San Diego CA, US
Gerard Medioni - Los Angeles CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

G06T 17/00

US Classification:

345420, 345419, 345423, 345424, 345427, 382154, 382226, 382294

Abstract:

A system of determining three-dimensional information from the information that is contained into discrete two-dimensional images. The two images may be obtained from two uncalibrated cameras. The information from the two uncalibrated cameras is first rectified, and then used to form a disparity surface indicating the third dimensional information. Various techniques are used to increase the speed of conversion.

US Patent:

20130243091, Sep 19, 2013

Filed:

Sep 14, 2012

Appl. No.:

13/615925

Inventors:

Yan Ye - San Diego CA, US
Qian Chen - Live Oak CA, US
Jie Dong - San Diego CA, US

Assignee:

VID SCALE, INC. - Wilmington DE

International Classification:

H04N 7/46

US Classification:

37524016

Abstract:

Systems, methods, and instrumentalities are disclosed relating to intra prediction of a video signal based on mode-dependent subsampling. A block of coefficients associated with a first sub block of a video block, one or more blocks of coefficients associated with one or more remaining sub blocks of the video block, and an indication of a prediction mode for the video block may be received. One or more interpolating techniques, a predicted first sub block, and the predicted sub blocks of the one or more remaining sub blocks may be determined. A reconstructed first sub block and one or more reconstructed remaining sub blocks may be generated. A reconstructed video block may be formed based on the prediction mode, the reconstructed first sub block, and the one or more reconstructed remaining sub blocks.