Ping H Hua

age ~61

from Princeton, NJ

Get Report

Also known as:

Connected to:

Ping Hua Phones & Addresses

Method And Apparatus For Automatically Determining A Quantization Factor Value That Produces A Desired Average Compression Ratio Of An Image Sequence Using Jpeg Compression
view source
US Patent:

62857932, Sep 4, 2001
Filed:

Nov 6, 1995
Appl. No.:

8/554425
Inventors:

Ping Hua - Streamwood IL
Assignee:

Siemens Medical Systems, Inc. - Iselin NJ
International Classification:

G06K 936
G06K 946
US Classification:

382239
Abstract:

A sequence of angiographic images is made up of frames of data. A sample sequence, made up of a number of such frames, is compressed using a lower value of the quantization factor and the resulting average compression ratio is determined. The same sample sequence is also compressed using a higher value for the quantization factor and another average compression ratio is determined. The value of the quantization factor corresponding to a desired average compression ratio of the entire sequence can then be determined by linear interpolation.

Method And Apparatus For Controlling X-Ray Angiographic Image Acquistion
view source
US Patent:

60524766, Apr 18, 2000
Filed:

Feb 16, 1999
Appl. No.:

9/251243
Inventors:

Jianzhong Qian - Princeton Junction NJ
Ping Hua - Streamwood IL
Zhenyu Wu - Plainsboro NJ
Assignee:

Siemens Corporate Research, Inc. - Piscataway NJ
International Classification:

G06K 900
G06K 940
A61B 604
US Classification:

382130
Abstract:

Controlling the stepping of an x-ray angiography imaging device (and/or table), and/or providing a visualization aid for stepping an x-ray angiography imaging device (and/or table), to maximize the diagnostic usefulness of images acquired by the x-ray angiography imaging device. The stepping and visualization aid use features, extracted from captured images, of the state of contrast media injected into a patient.

Methods And Apparatus For Controlling X-Ray Angiographic Image Acquisition
view source
US Patent:

61954500, Feb 27, 2001
Filed:

Sep 18, 1997
Appl. No.:

8/933522
Inventors:

Jianzhong Qian - Princeton Junction NJ
Ping Hua - Streamwood IL
Zhenyu Wu - Plainsboro NJ
Assignee:

Siemens Corporate Research, Inc. - Princeton NJ
International Classification:

G06K 900
G06K 940
H05G 102
A61K 4904
US Classification:

382130
Abstract:

Controlling the stepping of an x-ray angiography imaging device (and/or table), and/or providing a visualization aid for stepping an x-ray angiography imaging device (and/or table), to maximize the diagnostic usefulness of images acquired by the x-ray angiography imaging device. The stepping and visualization aid use features, extracted from captured images, of the state of contrast media injected into a patient.