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JOINT SOURCE-CHANNEL CODING OF JPEG2000 IMAGE TRANSMISSION OVER CODED COOPERATIVE NETWORKS 会议论文
2nd IEEE China Summit / International Conference on Signal and Information Processing (IEEE ChinaSIP), Xian, PEOPLES R CHINA, 2014-07-09
作者:  Bi, Chongyuan;  Liang, Jie;  Wu, Di
收藏  |  浏览/下载：9/0  |  提交时间：2019/12/09
Study on multi-track wireless communication and laser detection device over the Line 会议论文
Bangkok, Thailand, September 30, 2011 - October 1, 2011
作者:  Ding, Shoucheng;  Li, Wenhui
收藏  |  浏览/下载：9/0  |  提交时间：2020/11/15
Study on Multi-track Wireless Communication and Laser Detection Device over the Line 会议论文
作者:  Ding, Shoucheng;  Li, Wenhui
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/15
DVI interface, optical fiber video transceiver used in LED display system (EI CONFERENCE) 会议论文
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011, May 27, 2011 - May 29, 2011, Xi'an, China
Li S.; Wang R.
收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25
A professional DVI-Video optical fiber transceiver was designed based on FPGA (Field Programmable Gate Array) in order to meet the need of real-time LED display. The system could be used to transmit a non-loss  real-time video source whose resolution was 1024 768 and refresh rate was 60Hz in a single mode optical fiber. The top-down design method was used while programming FPGA. Some module design ideas were discussed including video data acquisition  caching  framing  frame detecting and video reproducing. The required bandwidth of each module was analyzed and calculated in details. Some relevant simulation results were also given. In practical test  real-time video display was achieved. And the transmission rate of coded data was up to 2Gbps  and the transmission distance could reach 10km. 2011 IEEE.  
LDPC-Coded Transmission System for Lossless Compressed Hyperspectral Image over Rayleigh Channel 会议论文
International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications, MAY 24-26, 2011
作者:  Wang, Xuye;  Ma, Piming;  Ma, Yanhua
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/31
基于简单网络环境的交互式多视点视频点播系统 会议论文
第一届建立和谐人机环境联合学术会议（HHME2005）论文集, 第一届建立和谐人机环境联合学术会议（HHME2005）, 中国昆明, CNKI, 中国计算机学会、中国图象图形学学会、ACM SIGCHI中国分会、清华大学计算机科学与技术系
谢剑; 孙立峰; 钟玉琢; XIE Jian; SUN Li-Feng; ZHONG Yu-Zhuo
收藏  |  浏览/下载：4/0
适于无线Ⅰ帧传输的改进容错视频流结构 会议论文
全国第一届嵌入式技术联合学术会议论文集, 全国第一届嵌入式技术联合学术会议, 中国新疆乌鲁木齐, CNKI, 中国体视学学会图像分析分会、中国体视学学会仿真与虚拟现实分会、中国工业与应用教学学会信号与信息处理专业委员会、中国自动化学会普及工作委员会、中国振动工程学会振动与噪声控制专业委员会
陈玉; 张旭东; 王德生; CHEN Yu; ZHANG Xu-dong; WANG De-sheng
收藏  |  浏览/下载：3/0
A quality-controllable encryption for H.264/AVC video coding 会议论文
Advances in Multimedia Information Processing - PCM 2006, Proceedings, 7th Pacific Rim Conference on Multimedia, Hangzhou, PEOPLES R CHINA, Web of Science
Hong, Guang-Ming; Yuan, Chun; Wang, Yi; Zhong, Yu-Zhuo
收藏  |  浏览/下载：3/0
Energy-Efficient Transmission Schemes for Reed-Solomon Coded Quadrature Amplitude Modulation 会议论文
3rd International Conference on BioMedical Engineering and Informatics, BMEI 2010, Yantai, China
作者:  Qiang Fu;  Dengyu Qiao;  Ye Li
收藏  |  浏览/下载：5/0  |  提交时间：2015/08/21
Design and image restoration research of a cubic-phase-plate system (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China
Zhang X.; Zhang X.; Shi G.; Zhang J.; He F.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
Wave-front coding technology is a novel jointly optical and digital imaging technology which can greatly extend the depth of focus of optical systems. The image restoration process is an important part of wave-front coding technology. Using wave-front coding makes the modulation transfer function(MTF) values of the optical systems change little over a range of several times the depth of focus  which means the system MTF is quite insensitive to defocus  and there is no zero in the passband. So we can design a single filter for the restoration of images in different defocus positions. However  it's hard to avoid noise during image acquisition and transmission processes. These noises will be amplified in the image restoration  especially in the high frequency part when the MTF drop is relatively low. The restoration process significantly reduces the system signal to noise ratio this way. Aimed at the problem of noise amplification  a new algorithm was proposed which incorporated wavelet denoising into the iterative steps of Lucy-Richardson algorithm. Better restoration results were obtained through the new algorithm  effectively solving the noise amplification problem of original LR algorithm. Two sets of identical triplet imaging systems were designed  in one of which the cubic-phase-plate was added. Imaging experiments of the manufactured systems were carried  and the images of a traditional system and a wave-front coded system before and after decoding were compared. The results show that the designed wave-front coded system can extend the depth of focus by 40 times compared with the traditional system while maintaining the light flux and the image plane resolution. 2010 Copyright SPIE - The International Society for Optical Engineering.  

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