期刊:
Journal of Computational Information Systems,2012年8(15):6257-6265 ISSN:1553-9105
通讯作者:
Kong, W.(byta100@yahoo.cn)
作者机构:
[Kong, Weiliang; Wang, Shengming; Han, Shuyun; Liu, Qingtang] National Engineering Research Center for E-learning, Central China Normal University, Wuhan 30079, China
通讯机构:
National Engineering Research Center for E-learning, Central China Normal University, China
期刊:
Proceedings of SPIE - The International Society for Optical Engineering,2012年8349 ISSN:0277-786X
通讯作者:
Zhao, G.(zhaogang@mail.ccnu.edu.cn)
作者机构:
[Zhao, Gang] National Engineering Research Center for E-Learning, Huazhong Normal University, Wuhan, China;[Li, Yangyang; Zhao, Gang; He, Bin; Liu, Qifang] Department of Information Technology, Huazhong Normal University, Wuhan, China
会议名称:
4th International Conference on Machine Vision (ICMV) - Machine Vision, Image Processing and Pattern Analysis
会议时间:
DEC 09-10, 2011
会议地点:
Singapore, SINGAPORE
会议论文集名称:
Proceedings of SPIE
关键词:
video stitching;camera pose estimation;boundary resampling
摘要:
This paper concerns the problem of video stitching automatically in a multi-camera surveillance system. Previous approaches have used multiple calibrated cameras for video mosaic in large scale monitoring application. In this work, we formulate video stitching as a multi-image registration and blending problem, and not all cameras are needed to be calibrated except a few selected master cameras. SURF is used to find matched pairs of image key points from different cameras, and then camera pose is estimated and refined. Homography matrix is employed to calculate overlapping pixels and finally implement boundary resample algorithm to blend images. The result of simulation demonstrates the efficiency of our method.
期刊:
ACM International Conference Proceeding Series,2012年:223-226
通讯作者:
Wu, J.(wujh@mail.ccnu.edu.cn)
作者机构:
[Wu, Jianhua] School of Information Management, Central China Normal University, Wuhan, Hubei 430079, China;[Yang, Harrison Hao] Department of Curriculum and Instruction, School of Education, State University of New York at Oswego, United States;[He, Xiuling] National Engineering Research Center for E-Learning, Central China Normal University, Wuhan, Hubei 430079, China
通讯机构:
School of Information Management, Central China Normal University, China
会议名称:
4th International Conference on Internet Multimedia Computing and Service, ICIMCS 2012
会议时间:
September 9, 2012 - September 11, 2012
会议地点:
Wuhan, China
关键词:
Computer games;Educational games;Game model for information literacy education;Games-based learning;Information literacy competency standards;Information literacy education
摘要:
Direct compression of original map can’t meet users' request on image quality. In order to harmonize image quality and bandwidth of wireless transmission, a protect scheme of UEP (Unequal Error Protection) with JEPG 2000 coder and Channel coding based on RCPC (Rate Compatible Punctured Convolutional) was proposed to improve ROI-based image quality. Firstly, ROI (region-of-interest) was extracted from Saliency Map based on visual attention model. Secondly, ROI and BG (background region) in image which transmitted in wireless channel respectively, were protected by different encoding bit rates and RCPC Code rates. Finally, the PSNR of image was calculated after transmitting in wireless channel using computer simulations. Experimental results show that ROI-based images with high-level protection get a higher quality than image without ROI while not increasing bandwidth.
作者:
Zhang, Kai;Zhai, Ying;Leong, Hon Wai;Wang, Shengming
期刊:
ACM International Conference Proceeding Series,2012年:219-222
通讯作者:
Wang, S.(victor@mail.ccnu.edu.cn)
作者机构:
[Zhang, Kai; Zhai, Ying; Wang, Shengming] National Engineering Research Center for E-Learning, Central China Normal University, 152 Luoyu Avenue, Wuhan, Hubei Province, 430079, China;[Leong, Hon Wai] Dept of Computer Science, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore
通讯机构:
National Engineering Research Center for E-Learning, Central China Normal University, 152 Luoyu Avenue, China
会议名称:
4th International Conference on Internet Multimedia Computing and Service, ICIMCS 2012
期刊:
Proceedings of SPIE - The International Society for Optical Engineering,2012年8350:587-591 ISSN:0277-786X
通讯作者:
Hu, Yan
作者机构:
[He, Bin; Yang, Yongchao; Hu, Yan; Zhao, Gang; Shen, Guosheng] Huazhong Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Hubei, Peoples R China.
通讯机构:
[Hu, Yan] H;Huazhong Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Hubei, Peoples R China.
会议名称:
2010 International Conference on Software and Computing Technology(2010年软件与计算机技术国际会议 ICSCT 2010)
会议时间:
2010-10-17
会议地点:
昆明
会议主办单位:
[Hu, Yan;Yang, Yongchao;Zhao, Gang;He, Bin;Shen, Guosheng] Huazhong Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Hubei, Peoples R China.
会议论文集名称:
2010 International Conference on Software and Computing Technology(2010年软件与计算机技术国际会议 ICSCT 2010)论文集
关键词:
Model Transformation;Large-scale three-Dimensional Scene model;Model Optimization;Data loss;Realtime rendering
摘要:
During the simulation process of real-time three-dimensional scene, the popular modeling software and the real-time rendering platform are not compatible. The common solution is to create three-dimensional scene model by using modeling software and then transform the format supported by rendering platform. This paper takes digital campus scene simulation as an example, analyzes and solves the problems of surface loss; texture distortion and loss; model flicker and so on during the transformation from 3Ds Max to MultiGen Creator. Besides, it proposes the optimization strategy of model which is transformed. The operation results show that this strategy is a good solution to all kinds of problems existing in transformation and it can speed up the rendering speed of the model.