Mei Kuei Chen

US Patent:

6882755, Apr 19, 2005

Filed:

Oct 19, 2001

Appl. No.:

10/039994

Inventors:

D. Amnon Silverstein - Mtn. View CA, US
Mei Chen - Stanford CA, US
Debargha Mukherjee - Palo Alto CA, US
Amir Said - Cupertino CA, US
Nirmalya Ray - Sunnyvale CA, US

Assignee:

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

International Classification:

G06K009/36

US Classification:

382282, 382284, 382232, 382313

Abstract:

A system and method of transmitting an image adapted to a first display area size, such as a standard computer screen having a particular pixel-by-pixel resolution, to an apparatus having a smaller second display area size by scaling the image through coefficient cropping its frequency domain representation. When the cropped frequency coefficients are used to display an image within the second smaller display area, a scaled version of the image is displayed. In a specific embodiment, frequency domain coefficients are cropped such that a region of interest of the image is scaled down less than the remainder of the image when displayed in the second smaller display area. Scaling in this manner provides the user with a readable region of interest with the remainder of the image scaled down so as to facilitate easy image navigation by the user.

US Patent:

7254279, Aug 7, 2007

Filed:

Oct 17, 2003

Appl. No.:

10/687681

Inventors:

Mei Chen - Stanford CA, US

Assignee:

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

International Classification:

G06K 9/40

US Classification:

382261

Abstract:

A method for removing undesired motion from a sequential plurality of related images utilizes adaptive filtering of image motion to determine image shifts. Differences between sequential image motions are taken with respect to a reference frame and a smoothing filter is applied to such differences of a sample of images adjacent a test image. Image shift values are calculated by subtracting the difference associated with a test frame from a filtered sample that includes the test frame. The image shift values are compared to an image shift parameter and sample sizes adjusted and image shift values calculated in accordance with the adjusted sample sizes so that image stability is obtained without boundary flicker.

US Patent:

7623683, Nov 24, 2009

Filed:

Apr 13, 2006

Appl. No.:

11/403989

Inventors:

Mei Chen - Palo Alto CA, US
Qian Lin - Palo Alto CA, US
Suk Hwan Lim - Palo Alto CA, US

Assignee:

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

International Classification:

G06K 9/00
H04N 11/02

US Classification:

382107, 382255, 37524016

Abstract:

Methods, machines, and machine-readable media for processing multiple exposure source images, including a reference image and one or more non-reference images, are described. In one aspect, respective sets of motion vectors that establish correspondences between respective pairs of the source images are calculated. Ones of the source images are warped to a reference coordinate system based on the sets of motion vectors. For each of the non-reference ones of the warped images, a respective set of one or more measures of alignment confidence between the non-reference warped image and the reference image in the reference coordinate system is computed. Saturated pixels and unsaturated pixels are identified in the warped images. An output image with pixel value contributions from unsaturated pixels in the warped images is generated based on the computed alignment confidence measures.

US Patent:

8644183, Feb 4, 2014

Filed:

Jun 26, 2012

Appl. No.:

13/533585

Inventors:

Jinhua Jiang - Palo Alto CA, US
Zae Yong Choi - San Diego CA, US
Mei Chen - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04J 1/16

US Classification:

370252, 370328

Abstract:

Systems and methods for memory-efficient storage and extraction of maximum power reduction (MPR) values in two-carrier wireless data systems are presented. A wireless broadband device can operate under the HSUPA Category 9 standard, in which two carriers can be employed for data uplinks. Due to power saturation, interference, and other factors, transmission output power is limited to various levels depending on channel configuration. Under previous standards using one carrier, the maximum power reduction (MPR) needed to address those issues could be stored on the device, since the total number of MPR values was limited. With the introduction of dual carriers in HSUPA-9, storing all possible MPR values is no longer feasible. Platforms and techniques are disclosed which allow accurate generation of MPR values in a two-carrier system, utilizing the 2nd, 4th, and 6th moments of the complex signals to derive MPR values without attempting to store all possible carrier combinations.

US Patent:

20050084135, Apr 21, 2005

Filed:

Oct 17, 2003

Appl. No.:

10/687715

Inventors:

Mei Chen - Stanford CA, US

International Classification:

G06K009/00
H04N005/14

US Classification:

382107000, 348699000

Abstract:

A method, system and apparatus for estimation of apparent displacement of an object between two images incorporates multiple hypotheses. Search range and step size are selected for testing a plurality of hypotheses. An estimate of object motion is made on a per hypothesis basis and the validity of each of such estimates is measured. Validity measurements that exceed the cutoff value are compared and the estimate of motion having the highest measure of validity is chosen as the most likely apparent displacement of the object.

US Patent:

20070280555, Dec 6, 2007

Filed:

Jun 1, 2006

Appl. No.:

11/445002

Inventors:

Mei Chen - Palo Alto CA, US

International Classification:

G06K 9/32
G06K 9/40

US Classification:

382294, 382275

Abstract:

Methods, systems and machine readable media storing machine-readable instructions for processing images are described. In one aspect, each of the images is divided into a set of corresponding non-overlapping concentric partitions. Each of the partitions includes a respective set of pixels distributed about a central point in the corresponding image. Motion vectors between corresponding partitions of respective pairs of the images are determined. Ones of the images are warped to a reference coordinate system based on the motion vectors.

US Patent:

20220244075, Aug 4, 2022

Filed:

Feb 1, 2022

Appl. No.:

17/590522

Inventors:

- San Francisco CA, US
Alan Jones - Berkeley CA, US
Mei Chen - San Francisco CA, US
Bonnie Tong - San Francisco CA, US
Alex Yan - Berkeley CA, US
Quoc Hoang - Walnut Creek CA, US

International Classification:

G01D 4/00
G01R 19/00
G01R 31/42
H04B 3/54

Abstract:

Some embodiments describe a DC meter system that can be placed in-line between a power source and an electrical load. In some embodiments, the DC meter system includes a DC meter that has multiple inputs for receiving electricity from multiple power sources. In some embodiments, the DC meter has one or more outputs, each capable of delivering electricity to a different electrical load. In some embodiments, the DC meter can combine electricity from two or more of the multiple inputs into one of the outputs. In some embodiments, the DC meter has a controller that can enable a user to deliver electricity from a particular input to a particular output. In some embodiments, the DC meter is configured to enable transition of electricity between an input and an output in a bi-directional manner. In some embodiments, the DC meter can record an amount of electricity transmitted in either direction.

US Patent:

20200372076, Nov 26, 2020

Filed:

May 20, 2020

Appl. No.:

16/878912

Inventors:

- Mountain View CA, US
Jay Adams - San Carlos CA, US
Manas Joglekar - Mountain View CA, US
Pranav Khaitan - Mountain View CA, US
Quoc V. Le - Sunnyvale CA, US
Mei Chen - Sunnyvale CA, US

International Classification:

G06F 16/9035
G06F 40/242
G06N 3/08
G06N 20/00
G06F 11/34

Abstract:

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining, for each of one or more categorical features, a respective vocabulary of categorical feature values of the categorical feature that should be active during processing of inputs by a machine learning model. In one aspect, a method comprises: generating a batch of output sequences, each output sequence in the batch specifying, for each of the categorical features, a respective vocabulary of categorical feature values of the categorical feature that should be active; for each output sequence in the batch, determining a performance metric of the machine learning model on a machine learning task after the machine learning model has been trained to perform the machine learning task with only the respective vocabulary of categorical feature values of each categorical feature specified by the output sequence being active.

Address:

4214 Burke Sta Rd, Fairfax, VA 22032

VIN:

5TDBT44A77S284910

Make:

TOYOTA

Model:

SEQUOIA 4WD 4DR SR5 NAT

Year:

2007