Tongwei REN    任桐炜

Associate Professor, Software Institute, Nanjing University

Office: Room 915, FeiYimin Building, Nanjing University, Nanjing, 210093, China
Tel: 86-25-83621360 EXT 915
Email: rentw@nju.edu.cn

What's New

Aug. 2, 2017 Two papers are accepted by MM 2017. Congratulations to Yuqi Gao and Jingfan Guo !
Jul. 31, 2017 One paper is accepted by PCM 2017. Congratulations to Yuantian Wang !
Jul. 26, 2017 One paper is accepted by ICIMCS 2017. Congratulations to Yuantian Wang !
Jul. 10, 2017 The thesis "Hashtag-centric immersive search on social media " is awarded "Excellent Undergraduate Thesis of Nanjing University (the second prize)". Congratulations to Yuqi Gao !
May 27, 2017 Recruiting graduate students and undergraduate students who are interested in multimedia computing and computer vision. For further information, please click here.
May 10, 2017 The thesis "Depth-aware layered edge for elastic RGB-D object proposal " is awarded "Excellent Undergraduate Thesis of Jiangsu Province (the third prize)". Congratulations to Jing Liu !
Apr. 12, 2017 Two papers are accepted by ICME 2017. Congratulations to Jingfan Guo and Xingyu Liu !
Feb. 27, 2017 One paper is accepted by Multimedia Systems. Congratulations to Jingfan Guo !

Career

Work Experience

Associate Professor Software Institute, Nanjing University, China Jun. 2014 - present
Assistant Researcher Software Institute, Nanjing University, China Dec. 2010 - Jun. 2014

Visiting

Visiting Scholar School of Computing, National University of Singapore, Singapore Jul. 2016 - Jul. 2017
Research Assistant Department of Computing, The Hong Kong Polytechnic University, China Apr. 2008 - Dec. 2008

Education

Doctor Department of Computer Science and Technology, Nanjing University, China Sep. 2006 - Jun. 2010
Master Software Institute, Nanjing University, China Sep. 2004 - Jun. 2006
Bachelor Department of Computer Science and Technology, Nanjing University, China Sep. 2000 - Jun. 2004

Activity

Membership

Committee Member ACM SIGMM China Chapter
CCF Technical Committee of Multimedia Technology
Jiangsu Province Society for Micro Computer Application
Senior Member CCF
Member ACM, ACM SIGMM, CSIG, IEEE, IEEE Computer, IEEE CAS

Journal Service

Reviewer ACM Transactions on Multimedia Computing, Communications and Application
IEEE Transactions on Image Processing
IEEE Transactions on Multimedia
IET Computer Vision
Information Sciences
Journal of Visual Communication and Image Representation
Multimedia Systems
Multimedia Tools and Applications
Neurocomputing
Signal Processing Letters
Signal Processing: Image Communication
The Visual Computer
World Wide Web Journal

Conference Service

Organizing Committee Member International Conference on Internet Multimedia Computing and Service (2015)
Pacific-Rim Conference on Multimedia (2017)
Program Committee Member Chinese National Conference on Multimedia (2016 - 2017)
IEEE International Conference on Multimedia Big Data (2017)
International Conference on Image Processing (2015 - 2017)
International Conference on Internet Multimedia Computing and Service (2012, 2014 - 2016)
Pacific-Rim Conference on Multimedia (2015 - 2017)

Course

  • Computer organization and architecture. Regular course for undergraduates, 2011 (co-instructed with Prof. Zhiquan Jin), 2013 - 2016.
  • Introduction to Cloud computing. Regular course for postgraduates, 2010 - 2015.
  • Advances in visual media computing. Seminar for postgraduates and advanced undergraduates, 2011 - 2015.

Textbook

  • Bin Luo, Dong Shao, and Tongwei Ren. Software engineering and computing (Volume 1): Programming fundamentals of software development. China Machine Press, 2012.

Undergraduate Thesis

  • "Hashtag-centric immersive search on social media" by Yuqi Gao is awarded "Excellent Undergraduate Thesis of Nanjing University (the second prize)" in 2017.
  • "Depth-aware layered edge for elastic RGB-D object proposal" by Jing Liu is awarded "Excellent Undergraduate Thesis of Jiangsu Province (the third prize)" and "Excellent Undergraduate Thesis of Nanjing University (the special prize)" in 2016.
  • "Salient object detection in RGB-D image based on saliency fusion and propagation" by Jingfan Guo is awarded "Excellent Undergraduate Thesis of Nanjing University (the second prize)" in 2015.
  • "Research on image retargeting methods selection based image features" by Muyang Song is awarded "Excellent Undergraduate Thesis of Nanjing University (the second prize)" in 2013.

Undergraduate Innovation

  • Jing Liu, Chunyu Li, Weiting Liu, Yuantian Wang (instructed by Tongwei Ren). Salient region detection for video incremental representation. National Undergraduate Innovation Project of China, 2014. (awarded as Excellent)
  • Ziyang Wang, Zhe Cheng, Zhongyuan Ren, Renguang Dong, Shijun Shen (instructed by Tongwei Ren and Lei Huang). Moving object modeling using multiple depth cameras. Undergraduate Innovation Project of Nanjing University, 2012.
  • Bowei Xu, Rizhen Zhang, Muyang Song, Chao Wang, Yang Yang (instructed by Tongwei Ren and Zhihong Zhao). Near-duplicate image detection based on cloud platform and its application in image understanding. Undergraduate Innovation Project of Ministry of Education of China, Project of Jiangsu Province and Key Project of Nanjing University, 2011.

Interest

My main research interest is in visual media computing. Currently I am interested in the following topics: category-independent object analysis, stereo image processing and mobile computational photography.

Paper

2017

Hashtag-centric immersive search on social media
Yuqi Gao, Jitao Sang, Tongwei Ren, Changsheng Xu
Proceedings of ACM International Conference on Multimedia (MM'17), Mountain View, USA, 2017.  [paper]
Video visual relation detection
Xindi Shang, Tongwei Ren, Jingfan Guo, Hanwang Zhang, and Tat-Seng Chua
Proceedings of ACM International Conference on Multimedia (MM'17), Mountain View, USA, 2017. (poster)
Object proposal via depth connectivity constrained grouping
Yuantian Wang, Lei Huang, Tongwei Ren, Sheng-Hua Zhong, Yan Liu, and Gangshan Wu
Proceedings of Pacific Rim Conference on Multimedia (PCM'17), Harbin, China, 2017. (poster)  [paper]
Saliency cuts on RGB-D images
Yuantian Wang, Lei Huang, Tongwei Ren, and Yunfei Zhang
Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'17), Tsingtao, China, 2017. (poster)  [paper]
Depth-aware salient object detection and segmentation via multiscale discriminative saliency fusion and bootstrap learning
Hangke Song, Zhi Liu, Huan Du, Guangling Sun, Olivier Le Meur, and Tongwei Ren
IEEE Transactions on Image Processing (TIP), 2017, 26(9):4204-4216. [paper]
Video salient object detection via cross-frame cellular automata
Jingfan Guo, Tongwei Ren, Lei Huang, Xingyu Liu, Ming-Ming Cheng, and Gangshan Wu
Proceedings of IEEE International Conference on Multimedia and Expo (ICME'17), Hong Kong, China, 2017. (poster)  [paper] [poster]
Object trajectory proposal
Xindi Shang, Tongwei Ren, Hanwang Zhang, Gangshan Wu, and Tat-Seng Chua
Proceedings of IEEE International Conference on Multimedia and Expo (ICME'17), Hong Kong, China, 2017. (poster)  [paper]
Saliency detection on sampled images for tag ranking
Jingfan Guo, Tongwei Ren, Lei Huang, and Jia Bei
Multimedia Systems (MMSJ), in press. [paper]
Object proposal on RGB-D images via elastic edge boxes
Jing Liu, Tongwei Ren, Yuantian Wang, Sheng-Hua Zhong, Jia Bei, and Shengchao Chen
Neurocomputing (NEUCOM), 2017, 236:134-146. [paper]

2016

  • Yuqi Gao, Jingfan Guo, Tongwei Ren, and Jia Bei. Personal photo enhancement via saliency driven color transfer. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'16), Xi'an, China, 2016. (poster)  [paper] [poster]
  • Na Liu, Ran Ju, Tongwei Ren, and Gangshan Wu. A saliency-guided method for automatic photo refocusing. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'16), Xi'an, China, 2016. (poster)  [paper] [poster]
  • Ben Zhang, Ran Ju, Tongwei Ren, and Gangshan Wu. Say cheese: Personal photography layout recommendation using 3D aesthetics estimation. Proceedings of Pacific Rim Conference on Multimedia (PCM'16), Xi'an, China, 2016.  [paper]
  • Wenjing Geng, Shuzhen Li, Tongwei Ren, and Gangshan Wu. Object proposals using SVM-based integrated model. Proceedings of International Joint Conference on Neural Networks (IJCNN'16), Vancouver, Canada, 2016.  [paper]
  • Jingfan Guo, Tongwei Ren, and Jia Bei. Salient object detection for RGB-D image via saliency evolution. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'16), Seattle, USA, 2016.  [paper] [slide] [poster] [code]
  • Jing Liu, Tongwei Ren, Bing-Kun Bao, and Jia Bei. Depth-aware layered edge for object proposal. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'16), Seattle, USA, 2016. (poster)  [paper] [poster]
  • Wenjing Geng, Dapeng Du, Tongwei Ren, and Gangshan Wu. User-oriented stereo video refocusing by computational cinematographic model. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'16), Seattle, USA, 2016. (poster)  [paper] [poster]
  • Jing Liu, Tongwei Ren, and Jia Bei. Elastic edge boxes for object proposal on RGB-D images. Proceedings of International Conference on Multimedia Modeling (MMM'16), Miami, USA, 2016, 199-211.  [paper] [slide]
  • Bingjie Jiang, Tongwei Ren, and Jia Bei. Automatic scribble simulation for interactive image segmentation evaluation. Proceedings of International Conference on Multimedia Modeling (MMM'16), Miami, USA, 2016, 596-608. (poster)  [paper] [poster]
  • Tongwei Ren, Yan Liu, Ran Ju, and Gangshan Wu. How important is location information in saliency detection of natural images. Multimedia Tools and Applications (MTAP), 2016, 75(5):2543-2564.  [paper]

2015

  • Ran Ju, Tongwei Ren, and Gangshan Wu. StereoSnakes: Contour based consistent object extraction for stereo images. Proceedings of IEEE International Conference on Computer Vision (ICCV'15), Santiago, Chile, 2015, 1724-1732. (poster)  [paper] [poster] [demo]
  • Ling Ge, Ran Ju, Tongwei Ren, and Gangshan Wu. Interactive RGB-D image segmentation using hierarchical graph cut and geodesic distance. Proceedings of Pacific Rim Conference on Multimedia (PCM'15), Gwangju, Korea, 2015, 114-124. (best paper runner-up)  [paper] [slide]
  • Jingfan Guo, Tongwei Ren, Jia Bei, and Yujin Zhu. Salient object detection in RGB-D image based on saliency fusion and propagation. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'15), Zhangjiajie, China, 2015.  [paper] [code]
  • Ran Ju, Yang Liu, Tongwei Ren, Ling Ge, and Gangshan Wu. Depth-aware salient object detection using anisotropic center-surround difference. Signal Processing: Image Communication (SPIC), 2015, 38:115-126.  [paper]
  • Shuzhen Li, Ran Ju, Tongwei Ren, and Gangshan Wu. Saliency cuts based on adaptive triple thresholding. Proceedings of IEEE International Conference on Image Processing (ICIP'15), Quebec, Canada, 2015, 4609-4613. (poster)  [paper] [poster]
  • Xiangyang Xu, Ling Ge, Tongwei Ren, and Gangshan Wu. Adaptive integration of depth and color for objectness estimation. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'15), Torino, Italy, 2015, 1-6. (poster)  [paper] [poster]
  • Wenjing Geng, Ran Ju, Xiangyang Xu, Tongwei Ren, and Gangshan Wu. Flat3D: Browsing stereo images on a conventional screen. Proceedings of International Conference on Multimedia Modeling (MMM'15), Sydney, Australia, 2015, 546-558.  [paper] [webpage]
  • Tongwei Ren, Zhongyan Qiu, Yan Liu, Tong Yu, and Jia Bei. Soft-assigned bag of features for object tracking. Multimedia Systems (MMSJ), 2015, 21(2):189-205.  [paper] [demo 1,2,3,4]

2014

  • Xiangyang Xu, Wenjing Geng, Ran Ju, Yang Yang, Tongwei Ren, and Gangshan Wu. OBSIR: Object-based stereo image retrieval. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'14), Chengdu, China, 2014, 1-6. (poster)  [paper] [slide] [poster]  [project page]
  • Ran Ju, Ling Ge, Wenjing Geng, Tongwei Ren, and Gangshan Wu. Depth saliency based on anisotropic center-surround difference. Proceedings of IEEE International Conference on Image Processing (ICIP'14), Paris, France, 2014, 1115-1119. (poster)  [paper] [poster] [code] [dataset] [project page]
  • Tongwei Ren, Ran Ju, Yan Liu, and Gangshan Wu. How important is location in saliency detection. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'14), Xiamen, China, 2014, 10-13. (best paper honorable mention)  [paper] [slide]
  • Xiangyang Xu, Tongwei Ren, and Gangshan Wu. CLSH: Cluster-based locality-sensitive hashing. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'14), Xiamen, China, 2014, 144-147.  [paper] [slide]
  • Tao Huang, Yan Liu, Tongwei Ren, Lei Huang, Jia Bei, and Qin Liu. High dynamic range image tone mapping with edge preserved dithering. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'14), Xiamen, China, 2014, 271-274. (poster)  [paper] [slide] [poster]
  • Wenjing Geng, Yang Yang, Ran Ju, Tongwei Ren, and Gangshan Wu. Fast binocular depth inference via bidirectional motion based interpolation. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'14), Xiamen, China, 2014, 213-216. (poster)  [paper] [slide] [poster]

2013

  • Zhongyan Qiu, Tongwei Ren, Yan Liu, Jia Bei, and Muyang Song. Image retargeting by combining region warping and occlusion. Proceedings of Pacific-Rim Conference on Multimedia (PCM'13), Nanjing, China, 2013, 200-210. (poster) [paper] [slide] [poster]
  • Muyang Song, Tongwei Ren, Yan Liu, Jia Bei, and Zhihong Zhao. Selecting suitable image retargeting methods with multi-instance multi-label learning. Proceedings of International Conference on Brain and Health Informatics (BHI'13), Maebashi, Japan, 2013, 418-426. [paper] [slide]
  • Zhongyan Qiu, Tong Yu, Tongwei Ren, Yan Liu, and Jia Bei. Soft-assigned bag of features tracking. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'13), Huangshan, China, 2013, 38-41. [paper] [slide]
  • Zhongyan Qiu, Tongwei Ren, YanLiu, Jia Bei, and Yang Yang. Multi-operator image retargeting based on automatic quality assessment. Proceedings of International Conference on Image and Graphics (ICIG'13), Qingdao, China, 2013, 428-433. [paper] [slide]
  • Sheng-hua Zhong, Yan Liu, Feifei Ren, Jinghuan Zhang, Tongwei Ren. Video saliency detection via dynamic consistent spatio-temporal attention modelling. Proceedings of AAAI Conference on Artificial Intelligence (AAAI'13), Bellevue, USA, 2013, 1063-1069. [paper] [slide]

Before 2013

  • Jun Wang, Tongwei Ren, Yan Liu, Jia Bei, Bowei Xu. Image retargeting assessment based on salient region similarity. Proceedings of International Conference on Internet Multimedia Computing and Service (ICIMCS'12), Wuhan, China, 2012, 140-143. [paper] [slide]
  • Tongwei Ren, Yan Liu, and Gangshan Wu. Video summary quality evaluation based on 4C assessment and user interaction. Book Chapter of Multimedia Interaction and Intelligent User Interfaces: Principles, Methods and Applications, Edited by Ling Shao, Caifeng Shan, Jiebo Luo and Minoru Etoh, 2010, 243-269. [paper]
  • Tongwei Ren and Gangshan Wu. Automatic image retargeting evaluation based on user perception. Proceedings of IEEE International Conference on Image Processing (ICIP'10), Hong Kong, China, 2010, 1569-1572. [paper]
  • Tongwei Ren, Yan Liu, and Gangshan Wu. Rapid image retargeting based on curve-edge grid representation. Proceedings of IEEE International Conference on Image Processing (ICIP'10), Hong Kong, China, 2010, 869-872. [paper]
  • Tongwei Ren, Yan Liu, and Gangshan Wu. Image retargeting based on region relation graph. Chinese Journal of Software (JOS), 2010, 21(9):2237-2249. (in Chinese) [paper]
  • Tongwei Ren, Yan Liu, and Gangshan Wu. Image retargeting using multi-map constrained region warping. Proceedings of ACM International Conference on Multimedia (MM'09), Beijing, China, 2009, 853-856. (short) [paper]
  • Tongwei Ren, Yan Liu, and Gangshan Wu. Image retargeting based on global energy optimization. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'09), New York, USA, 2009, 406-409. [paper]
  • Yaqiong Wang, Yang Yang, Tongwei Ren, and Gangshan Wu. A motion-insensitive dissolve detection method with SURF. Proceedings of International Conference on Image and Graphics (ICIG'09), Xi'an, China, 2009, 451-456. [paper]
  • Tongwei Ren, Yan Liu, and Gangshan Wu. Full-reference quality assessment for video summary. Proceedings of International Workshop on Video Mining (ICDM'08-WVM), Pisa, Italy, 2008, 874-883. [paper]
  • Tongwei Ren, Yanwen Guo, Gangshan Wu and Fuyan Zhang. Constrained sampling for image retargeting. Proceedings of IEEE International Conference on Multimedia and Expo (ICME'08), Hannover, Germany, 2008, 1397-1400. [paper]
  • Yang Liu, Yan Liu, Tongwei Ren, and Keith C.C. Chan. Rushes video summarization using audio-visual information and sequence alignment. Proceedings of ACM TRECVID Video Summarization Workshop (MM'08-TVS), Vancouver, Canada, 2008, 114-118. (poster) [paper]
  • Tongwei Ren and Gangshan Wu. Content-based retrieval of cultural relic images in digital museum. Proceedings of International Conference on Artificial Reality and Telexistence (ICAT'06), Hangzhou, China, 2006, 1108-1117. [paper]

Patent

  • Tongwei Ren, Jia Bei, and Jing Liu. An object proposal method by combining widow scoring and super-pixel grouping. Appplication number: 201510888926.3. (in Chinese)
  • Tongwei Ren, Gangshan Wu, Shuzhen Li, Ran Ju. A salient object segmentation method based on adaptive triple thresholding. Application number: 201510615075.5. (in Chinese)
  • Tongwei Ren, Jia Bei, Jingfan Guo. A salient object detection method based on saliency fusion and propogation. Application number: 201510435772.2. (in Chinese)
  • Jia Bei, Tongwei Ren, You Liang, Wei Ma, Zhongyuan Ren. Channel traffic information prediction method and application based on multidata fusion. Patent number: ZL201410337925.5. (in Chinese)
  • Jia Bei, Tongwei Ren, Zhihong Zhao, Zhongyan Qiu, Tong Yu, and Zhongyuan Ren. Target tracking method based on soft distribution BoF. Patent number: ZL201410141636.8. (in Chinese)

Recruiting

We are constantly looking for motivated graduate students and undergraduate students who are interested in multimedia computing and computer vision. For further information, please click here.

Graduate student

Yuqi Gao Yuqi Gao
Master student (Sep. 2017 - present), Research Assistant (Nov. 2015 - present)
Co-supervisor: Jitao Sang
Email: gyq1996@smail.nju.edu.cn
Interest: social media
Jingfan Guo Jingfan Guo
Master student (Sep. 2015 - present), Research Assistant (Mar. 2013 - Aug. 2015)
Co-supervisor: Ming-Ming Cheng
Email: guojf@smail.nju.edu.cn
Interest: salient object detection
Yuqi Gao Xingyu Liu
Master student (Sep. 2017 - present), Research Assistant (May 2016 - present)
Co-supervisor: Yahong Han
Email: liuxingyu@smail.nju.edu.cn
Interest: deep learning based video analysis
Yuantian Wang Yuantian Wang
Master student (Sep. 2016 - present), Research Assistant (Mar. 2014 - Aug. 2016)
Co-supervisor: Yan Liu, Sheng-Hua Zhong
Email: wangyt@smail.nju.edu.cn
Interest: object analysis

Research Assistant

Xu Sun Xu Sun
Research Assistant (May 2017 - present)
Email: 141250119@smail.nju.edu.cn
Interest: object analysis
Fan Yu Fan Yu
Research Assistant (May 2017 - present)
Email: 141250175@smail.nju.edu.cn
Interest: object analysis

Alumni

Jing Liu Jing Liu
Research Assistant (Mar. 2014 - Jun. 2016)
Co-supervisor: Bing-Kun Bao
Interest: object proposal
Destination: University of Wisconsin-Madison