Feng Liu

US Patent:

7858876, Dec 28, 2010

Filed:

Mar 13, 2007

Appl. No.:

11/685439

Inventors:

Max Lagally - Madison WI, US
Feng Liu - Salt Lake City UT, US

Assignee:

Wisconsin Alumni Research Foundation - Madison WI
University of Utah Research Foundation - Salt Lake City UT

International Classification:

H01L 31/00
H02N 6/00

US Classification:

136255, 136243, 136246, 136259, 136261

Abstract:

The present invention uses lithographically patterned graphite stacks as the basic building elements of an efficient and economical photovoltaic cell. The basic design of the graphite-based photovoltaic cells includes a plurality of spatially separated graphite stacks, each comprising a plurality of vertically stacked, semiconducting graphene sheets (carbon nanoribbons) bridging electrically conductive contacts.

US Patent:

8102428, Jan 24, 2012

Filed:

Nov 21, 2008

Appl. No.:

12/276119

Inventors:

Aseem O. Agarwala - Seattle WA, US
Feng Liu - Madison WI, US
Hailin Jin - San Jose CA, US

Assignee:

Adobe Systems Incorporated - San Jose CA

International Classification:

H04N 5/228

US Classification:

3482083

Abstract:

In one embodiment, a method comprises receiving a source video sequence; determining a stabilized camera path to which the source video sequence is to be stabilized; and generating a stabilized video sequence, wherein each frame of the stabilized video sequence is generated as a content-aware warp of a corresponding frame in the input sequence.

US Patent:

8218895, Jul 10, 2012

Filed:

Sep 27, 2006

Appl. No.:

11/535808

Inventors:

Michael Lee Gleicher - Madison WI, US
Feng Liu - Madison WI, US

Assignee:

Wisconsin Alumni Research Foundation - Madison WI

International Classification:

G06K 9/40

US Classification:

382275, 345427, 345667, 345671, 348556, 382162, 382173, 382243, 382248, 382266, 382282, 382298

Abstract:

A retargeted image substantially retains the context of an original image while emphasizing the information content of a determined region of interest within the original image. Image regions surrounding the region of interest are warped without regard to preserving their information content and/or aspect ratios, while the region of interest is modified to preserve its aspect ratio and image content. The surrounding image regions can be warped to fit the resulting warped image regions into the available display space surrounding the unwarped region of interest. The surrounding image regions can be warped using one or more fisheye warping functions, which can be Cartesian or polar fisheye warping functions, and more specifically linear or linear-polynomial Cartesian fisheye warping functions, which are applied along each direction or axis of the region of interest. The image region on each side of the region of interest can be modified using one or more steps.

US Patent:

8649558, Feb 11, 2014

Filed:

May 31, 2011

Appl. No.:

13/149609

Inventors:

Michael Gleicher - Madison WI, US
Feng Liu - Portland OR, US
Yuzhen Niu - Shandong, CN

Assignee:

Wisconsin Alumni Research Foundation - Madison WI

International Classification:

G06K 9/00

US Classification:

382103

Abstract:

Video data is processed with region-based warping. In accordance with various example embodiments, video data having a plurality of source video frames is processed as follows, for each source video frame. Pixels representing the source video frame and at least one temporally-adjacent video frame are used to generate a motion history map, based upon frame-to-frame movement of at least one region in the source video frame and temporally-adjacent video frames. At least one salient region is identified in the source video frame based upon the motion history map and static image saliency data. Weighting data is determined for warping pixels corresponding to background regions of the source video frame differently than pixels corresponding to the at least one salient region in the source video frame. Using the weighting data, the pixels representing the source video frame are warped to generate pixels representing a warped video frame.