电子工程系

Department of Electronic Engineering 

PENG Liangrui

Ph. D., Associate Professor, Ph. D. Supervisor
Address:Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
Office: Rohm BLDG. 6-303
Tel: +86-10-62773710 ext. 308


Email: penglr@tsinghua.edu.cn 
Website: http://tac.ee.tsinghua.edu.cn

 

 

Education background

Ph. D. 2010 Tsinghua University, Beijing, China 
Master 1997 Huazhong University of Science and Technology, Wuhan, Hubei, China
Bachelor 1994 Huazhong University of Science and Technology, Wuhan, Hubei, China

 

Experience

11/2010 - present Associate Professor, Dept. of Electronic Engineering, Tsinghua Univ.
04/1997 - 11/2010 Assistant Professor, Dept. of Electronic Engineering, Tsinghua Univ.

Teaching:

Media and Cognition, undergraduate core course, 2012 – present
Multimedia and Network, graduate course, 2005 - present

 

 

Concurrent Academic

Senior Member, IEEE
Member, ACM

 

Areas of Research Interests/ Research Projects

Machine Learning, Image & document information processing

 

 

Research Status

“Camera-based Multilingual Document Image Recognition Theory and Method”, National Science Foundation of China, 2017-2019
“Recurrent Neural Network based Handwritten Character Recognition”, Toshiba, 2016
“Convolutional Neural Network based Handwritten Character Recognition”, Toshiba, 2015
“Handwritten Historical Chinese Document Recognition”, National Science Foundation of China NSFC-ANR China-France Joint Project, 2013-2015
“Multilingual Ethnic document recognition and understanding”, National Science Foundation of China (Key Program), 2011-2014
“Markov Random Field Modeling for Multilingual Document Recognition”, National Science Foundation of China, 2009-2011
Multilingual OCR technology and application, 2009-2010
Multilingual writer identification, 2008
Printed Arabic document recognition, Nuance, 2003-2006
Handwritten Arabic document recognition, Nuance, 2004-2005
Logical structure extraction of Chinese documents, Fuji-Xerox, 2004-2005
Document layout representation based on XML, Ricoh, 2005
Chinese historical document recognition, 2003
Asian languages (Chinese, Japanese, Korean) document recognition, Microsoft & Nuance, 2001-2006

 

Honors And Awards

Winner of ICDAR 2017 Competition on Arabic Text Detection and Recognition in Multi-resolution Video Frames (AcTiV)
“CNN (Convolutional Neural Network) based Transfer Learning for Historical Chinese Character Recognition” won DAS 2016 Nakano Best Paper Award in April 2016
“Gaussian Process Style Transfer Mapping for Historical Chinese Character Recognition” written by master student FENG Jixiong won DRR 2015 Best Student Paper Award in February 2015
“TH-ID face and handwriting biometric identification system”, National Prize for Progress in Science and Technology, 2nd Class, 2008
“High performance Asian languages document digitization system”, National Prize for Progress in Science and Technology, 2nd Class, 2003
“TH-OCR integrated Chinese character recognition system”, National Prize for Progress in Science and Technology, 2nd Class, 1998


Academic Achievement

Book Chapter:

Liangrui Peng, Jixiong Feng, Historical Chinese Character Recognition Using Transfer Learning, In Cheng-Lin Liu, Yue Lu (Ed.), Advances in Chinese Document and Text Processing (127-146), World Scientific Publishing Co., 2017

Video Caption and Scene Text Detection and Recognition:

Yaqi Wang, Liangrui Peng, Shengjing Wang, A Multi-stage Method for Chinese Text Detection in News Videos, Procedia Computer Science, 2016, 96, 1409-1417.

Multilingual Document image recognition:

Liren Chen, Ruijie Yan, Liangrui Peng, Akio Furuhata and Xiaoqing Ding. Multi-layer Recurrent Neural Network based Offline Arabic Handwriting Recognition, in Proceedings of International Workshop on Arabic Script Analysis and Recognition, 2017, 6-10.
Yejun Tang, Bing Wu, Liangrui Peng and Changsong Liu, Semi-supervised Transfer Learning for Convolutional Neural Network based Chinese Character Recognition, in Proceedings of International Conference on Document Analysis and Recognition, 2017, 441-447.
Xiangsheng Zeng, Donglai Xiang, Liangrui Peng, Changsong Liu and Xiaoqing Ding, Local Discriminant Training and Global Optimization for Convolutional Neural Network based Handwritten Chinese Character Recognition, in Proceedings of International Conference on Document Analysis and Recognition, 2017, 383-388.
Ruijie Yan, Liangrui Peng, Guangxiang Bin, Shengjin Wang and Yao Cheng, Residual Recurrent Neural Network with Sparse Training for Offline Arabic Handwriting Recognition, in Proceedings of International Conference on Document Analysis and Recognition, 2017, 1031-1037.
Pengchao Li, Liangrui Peng, Junyang Cai, Xiaoqing Ding and Shuangkui Ge, Attention Based RNN Model for Document Image Quality Assessment, in Proceedings of International Conference on Document Analysis and Recognition, 2017, 819-825.
Pengchao Li, Liangrui Peng, Juan Wen, Rejecting Character Recognition Errors Using CNN Based Confidence Estimation, Chinese Journal of Electronics, 25(3), 2016, 520-526.
Liangrui Peng, Changsong Liu, Xiaoqing Ding, Jianming Jin, Youshou Wu, Hua Wang, Yanhua Bao, Multi-font printed Mongolian document recognition system, International Journal on Document Analysis and Recognition, 13(2), 2010, 96-103.
Pengchao Li, Jiadong Zhu, Liangrui Peng and Yunbiao Guo, RNN Based Uyghur Text Line Recognition and its Training Strategy, in Proceedings of IAPR Workshop on Document Analysis Systems, 2016, 19-24.
Hao Ye, Liangrui Peng, Word level script recognition for Uighur document mixed with English script, in Proceedings of International Workshop on Multilingual OCR, 2013, 4:1-4:5.
Bing Su, Liangrui Peng, Xiaoqing Ding, SemiBoost-based Arabic character recognition method,Proceedings of SPIE, v7874, 2011.
Liangrui Peng, Changsong Liu, Xiaoqing Ding, Hua Wang, Jianming Jin, Multi-font printed Mongolian document recognition system, Proceedings of SPIE, v 7247, 2009.
Pingping Xiu, Liangrui Peng, Xiaoqing Ding, Offline handwritten Arabic character segmentation with probabilistic model, Lecture Notes in Computer Science, Document Analysis Systems VII, 2006, 402-412.
Liangrui Peng, Changsong Liu, Xiaoqing Ding, et al., Multilingual document recognition research and its application in China, in Proceedings of International Conference on Document Image Analysis for Libraries, 2006, 126-132.
Xiaoqing Ding, Di Wen, Liangrui Peng, Document Digitization Technology and its Application for Digital Libraries in China, in Proceedings of International Conference on Document Image Analysis for Libraries, 2004, 46-53.
Liangrui Peng, Ming Chen, Changsong Liu, Xiaoqing Ding, Jirong Zheng, An Automatic Performance Evaluation Method for Document Page Segmentation, in Proceedings of International Conference on Document Analysis and Recognition, 2001, 134-137.

Online Handwritten Character Recognition and Analysis:

Yang Hu, Liangrui Peng, Yejun Tang, On-line Handwritten Mathematical Expression Recognition Method Based on Statistical and Semantic Analysis. in Proceedings of IAPR Workshop on Document Analysis Systems, 2014, 171-175.
Rongsha Li, Liangrui Peng, Endong Xun, Wei Nan, A Stroke Order Verification Method for On-Line Handwritten Chinese Characters Based on Tempo-spatial Consistency Analysis, in Proceedings of International Conference on Document Analysis and Recognition, 2013, 999-1003.

Historical Document Recognition:

Haoyu Qin, Liangrui Peng. Convolutional Neural Network with Attention Mechanism for Historical Chinese Character Recognition, in Proceedings of International Workshop on Historical Document Imaging and Processing, 2017, 42-47.
Yejun Tang, Liangrui Peng, Qian Xu, Yanwei Wang and Akio Furuhata, CNN based Transfer Learning for Historical Chinese Character Recognition, in Proceedings of IAPR Workshop on Document Analysis Systems, 2016, 25-29, DAS 2016 Best Paper Award.
Jixiong Feng, Liangrui Peng, Frank Lebourgeois, Gaussian process style transfer mapping for historical Chinese character recognition, DRR 2015, 94020D, DRR 2015 Best Student Paper Award.
Boqiang Fan, Liangrui Peng, Frank Lebourgeois, Layout Analysis Algorithm Based on Probabilistic Graphical Model for Dunhuang Historical Documents, in Proceedings of International Workshop on Historical Document Imaging and Processing, 2013, 63-70.
Bohan Li, Liangrui Peng, Jingning Ji, Historical Chinese Character Recognition Method Based on Style Transfer Mapping, in Proceedings of IAPR Workshop on Document Analysis Systems, 2014, 96-100.
Jingning Ji, Liangrui Peng, Bohan Li, Graph Model Optimization Based Historical Chinese Character Segmentation Method, in Proceedings of IAPR Workshop on Document Analysis Systems, 2014, 282-286.
Linjie Yang, Liangrui Peng, Local projection-based character segmentation method for historical Chinese documents. DRR 2013, 86580O.
Xiaolu Sun, Liangrui Peng, Xiaoqing Ding, Touching character segmentation method for Chinese historical documents, Proceedings of SPIE, v 7534, 2010.
Liangrui Peng, et al., Design and development of an ancient Chinese document recognition system, Proceedings of SPIE, v 5020, 2004, 166-173.

Biometric personal identification:

Yaqi Wang, Liangrui Peng, Shengjing Wang, Xiaoqing Ding, Contactless palm landmark detection and localization on mobile devices, IS&T International Symposium on Electronic Imaging, Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications Conference, 2016.
Jiawei Hu, Liangrui Peng, Li Zheng, XFace: A Face Recognition System for Android Mobile Phones, CPSNA 2015, 13-18.
Changting Li, Liangrui Peng, Changsong Liu, Xiaoqing Ding, On-line signature verification method by Laplacian spectral analysis and dynamic time warping, DRR 2014, 90210S.
Lu Xu, Xiaoqing Ding, Liangrui Peng and Xin Li, An improved method based on weighted grid micro-structure feature in text-independent writer recognition, in Proceedings of International Conference on Document Analysis and Recognition, 2011, 638-642.