Changsong Liu

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for character recognition based on gabor filters
- Patent number 7,174,044
- Issue date Feb 6, 2007
- Tsinghua University
- Xiaoqing Ding
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR PASSCODE ENTRY
- Publication number 20120299701
- Publication date Nov 29, 2012
- Nokia Corporation
- Yanming Zou
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND SYSTEM OF LIVE DETECTION BASED ON PHYSIOLOGICAL MOTION O...
- Publication number 20090135188
- Publication date May 28, 2009
- TSINGHUA UNIVERSITY
- Xiaoqing Ding
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method for character recognition based on gabor filters
- Publication number 20040017944
- Publication date Jan 29, 2004
- Xiaoging Ding
- G06 - COMPUTING CALCULATING COUNTING