Qingxiong F Yang

8334870, Dec 18, 2012

Apr 2, 2009

12/384229

Qingxiong Yang - Mountain View CA, US

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

G06T 15/00

345426, 345419, 345428, 348571, 382103

Various embodiments of the present invention related to methods for obtaining shadow invariant and shadow-shading invariant images from a single camera image taken with a narrow-band camera sensor and assuming Plankian illuminating conditions.

8355565, Jan 15, 2013

Oct 29, 2009

12/608394

Qingxiong Yang - Urbana IL, US

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

G06K 9/00

382154, 382216

Producing high quality depth maps. A time of flight camera and stereo cameras of a stereo camera arrangement are mapped into a common coordinate system. A correspondence between an RGB image taken from the time of flight camera and an RGB image taken from a reference stereo camera of the stereo camera arrangement is established. Intensity values of the plurality of pixels of a stereo camera left of the reference stereo camera, a stereo camera right of the reference stereo camera and the reference stereo camera are determined. These intensity values of the stereo camera left of the reference stereo camera and the stereo camera right of the reference stereo camera are compared to the reference camera. Based on the comparing, matching intensity values are determined.

8447098, May 21, 2013

Nov 23, 2010

12/952431

Scott D. Cohen - Sunnyvale CA, US
Qingxiong Yang - Urbana IL, US

Adobe Systems Incorporated - San Jose CA

G06K 9/00

382154

Model-based stereo matching from a stereo pair of images of a given object, such as a human face, may result in a high quality depth map. Integrated modeling may combine coarse stereo matching of an object with details from a known 3D model of a different object to create a smooth, high quality depth map that captures the characteristics of the object. A semi-automated process may align the features of the object and the 3D model. A fusion technique may employ a stereo matching confidence measure to assist in combining the stereo results and the roughly aligned 3D model. A normal map and a light direction may be computed. In one embodiment, the normal values and light direction may be used to iteratively perform the fusion technique. A shape-from-shading technique may be employed to refine the normals implied by the fusion output depth map and to bring out fine details. The normals may be used to re-light the object from different light positions.

8625896, Jan 7, 2014

Apr 3, 2009

12/418538

Qingxiong Yang - Urbana IL, US
Irwin E. Sobel - Menlo Park CA, US

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

G06K 9/34

382173, 382164, 382165, 382260, 348159, 348586

An alpha matte is generated from image forming elements of an image. For each of one or more of the image forming elements: a respective representative foreground value is determined from one or more of the image forming element values; the respective representative foreground value and the value of the image forming element are normalized with respect to a threshold level; and a respective value of the alpha matte is generated from an evaluation of the normalized image forming element value in relation to the normalized representative foreground value.

8260076, Sep 4, 2012

Mar 31, 2009

12/415962

Qingxiong Yang - Urbana IL, US

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

G06K 9/40
G06F 17/10
H04B 1/10

382261, 708300, 375350

A system for filtering an image using a bilateral filter includes a receiver and a bilateral filter. The receiver is for receiving an image having a plurality of pixels. The bilateral filter is run in constant time and comprises a pixel value range determinor and a spatial filter. The pixel value range determinor is configured to determine a range of pixel values of the plurality of pixels. The spatial filter is configured to spatially filter at least one of the plurality of pixels. The spatial filter is further configured to perform over a plurality of pixel values in the range of pixel values.