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作者： Liu, X. Bai, Y. Chen, L. Xu, W. Wei, F.X. Zhang, X.B. Zhu, W.Q. Jiang, X.Y. Zhang, Zh.L. Lee, Hsin-Ying Lee, Ching-Ting Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai 200072 China Department of Materials Science Jiading Campus Shanghai University Shanghai 201800 China Department of Electrical Engineering Institute of Microelectronics National Cheng Kung University Tainan Taiwan

ISBN: (纸本)9787561752289

An organic thin-film transistors (OTFTs) with compound insulator have been made. The structure of compound insulator: SiO2/SiN x/SiO2/PMMA. A 50 nm PMMA layer was coated on top of the SiO2 gate insulator as additional insulator layer. The results demonstrated that using inorganic/organic compound insulator as the gate dielectric layers is an effective method to fabricate OTFTs with improved electric characteristics and decreased leakage current. Electrical parameters such as carrier mobility and on/off ratio by field effect measurement have been calculated. OTFT based on ITO glass substrate with a field-effect mobility of 0.003 cm2/Vs and on/off ratio of 104 have been obtained.

关键词： Silica

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Hardware Implementation of Transform and Quantization for AVS Encoder

Hardware Implementation of Transform and Quantization for AV...

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2008 International Conference on Audio，Language and Image Processing(2008国际声音、语言、图像过程大会)

作者： Leirui Wang Zhaoyang Zhang Guowei Teng Liquan Shen Xuli Shi Key Lab.Of Advanced Display and System Application Ministry of Education Shanghai Univ. Shanghai 200072 China

Multimedia applications need larger and larger bandwidth. The only way to face the demands is to provide better and faster video compression standard. Thus, A VS is created in China. To address the need for hardware acceleration of its computationally intensive parts, high throughput hardware architectures for fast computation of the 2-D Transform Quantization Inverse Quantization and Inverse Transform are presented in this paper. In addition, two high performance system architectures are presented. The proposed hardware architectures are incorporated into two different hardware systems implemented on a Virtex 4 Pro FPGA. Simulation results show that both two hardware system architectures that are incorporated proposed architectures could provide satisfactory performances.

关键词： Transforms Quantization Computer architecture Hardware Pixel Discrete cosine transforms Microprocessors

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Color liquid crystal grating based color holographic 3D display system with large viewing angle

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Light(Science & applications) 2024年第1期13卷 103-112页

作者： Di Wang Yi-Long Li Fan Chu Nan-Nan Li Zhao-Song Li Sin-Doo Lee Zhong-Quan Nie Chao Liu Qiong-Hua Wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing 100191China State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijing 100191China Display Technology Research Center Seoul National UniversityGwanak-ro 1Gwanak-guSeoul 08826Republic of Korea Key Lab of Advanced Transducers and Intelligent Control System Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China

Holographic 3D display is highly desirable for numerous applications ranging from medical treatments to military ***,it is challenging to simultaneously achieve large viewing angle and high-fidelity color reconstruction due to the intractable constraints of existing ***,we conceptually propose and experimentally demonstrate a simple and feasible pathway of using a well-designed color liquid crystal grating to overcome the inevitable chromatic aberration and enlarge the holographic viewing angle,thus enabling large-viewing-angle and color holographic 3D *** use of color liquid crystal grating allows performing secondary diffraction modulation on red,green and blue reproduced images simultaneously and extending the viewing angle in the holographic 3D display *** principle,a chromatic aberration-free hologram generation mechanism in combination with the color liquid crystal grating is proposed to pave the way for on such a superior holographic 3D *** proposed system shows a color viewing angle of~50.12°,which is about 7 times that of the traditional system with a single spatial light *** work presents a paradigm for achieving desirable holographic 3D display,and is expected to provide a new way for the wide application of holographic display.

关键词： holographic angle crystal

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Spectrum-dependent photonic synapses based on 2D imine polymers for power-efficient neuromorphic computing

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InfoMat 2021年第8期3卷 904-916页

作者： Junyao Zhang Qianqian Shi Ruizhi Wang Xuan Zhang Li Li Jianhua Zhang Li Tian Lize Xiong Jia Huang Interdisciplinary Materials Research Center School of Materials Science and EngineeringShanghai Institute of Intelligent Science and TechnologyTongji UniversityShanghaiPeople's Republic of China Translational Research Institute of Brain and Brain-Like Intelligence Shanghai Fourth People's Hospital Affiliated to Tongji UniversityShanghaiPeople's Republic of China Key Laboratory of Advanced Display and System Application Ministry of EducationShanghai UniversityShanghaiPeople's Republic of China

2D polymers(2DPs)have attracted increasing interests in sensors,catalysis,and gas storage ***,2DPs with unique band structure and tunable photophysical properties also have immense potential for application in photonic neuromorphic ***,photonic synaptic transistors based on 2DPs as the light-tunable charge-trapping medium are developed for the first *** resulted organic transistors can successfully emulate common synaptic functions,including excitatory postsynaptic current,pair-pulse facilitation,the transition of short-term memory to long-term memory,and dynamic *** from the high photosensitivity of the 2DP,the devices can be operated under a low operating voltage of0.1 V,and achieve an ultralow energy consumption of~0.29 pJ per *** addition,the heterostructure formed between the 2DP and organic semiconductor enables spectrum-dependent synaptic responses,which facilitates the simulation of visual learning and memory processes in distinct emotional *** underlying mechanism of spectrum-dependent synaptic-like behaviors is systematically validated with in situ atomic force microscopy based electrical *** spectrum-enabled tunability of synaptic behaviors further promotes the realization of optical logic functions and associative *** work inspires the new application of 2DPs in photonic synapses for future neuromorphic computing.

关键词： 2D polymers neuromorphic computing photonic synapses synaptic functions

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An Efficient Deblocking Filter Algorithm in Multi-view Video Coding

An Efficient Deblocking Filter Algorithm in Multi-view Video...

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2010 International Conference on Audio,Language and Image Processing(2010年音频、语言与图像处理国际会议 ICALIP 2010)

作者： Ying Fu Yongfang Wang Zhaoyang Zhang School of Communication and Information Engineering Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai 200072 China

ISBN: (纸本)9781424458653

Image and video coding in block-based image coding can cause blocking artifacts, which severely degrade visual quality in the compressed sequences. Loop deblocking filter method can reduce these artifacts and improve the video objective and subjective quality obviously. In this paper, we propose an efficient deblocking filtering method for multiview video coding, which considers the color bleeding distortion. Experimental results show that this proposed algorithm outperforms the traditional deblocking algorithm in terms of PSNR and subjective visual quality when QP value is relatively high.

关键词： Video coding Filtering algorithms Peak signal-to-noise ratio image coding Image images block effect Artifacts model based image coding

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Fast mode decision for multiview video coding

Fast mode decision for multiview video coding

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IEEE International Conference on Image Processing

作者： Liquan Shen Tao Yan Zhi Liu Zhaoyang Zhang Ping An Lei Yang Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai China Physics Department EPS Heriot-Watt University Edinburgh UK

In the draft of multi-view coding (MVC), variable size motion estimation and disparity estimation are employed to select the best coding mode for each macroblock. These techniques achieve the highest possible coding efficiency, but they result in extremely large computation complexity which obstructs MVC from practical application. This paper proposes a fast mode size decision algorithm for MVC in inter-frame coding. It makes use of the mode distribution correlation between neighbor views to deduct the executions of unnecessary modes. Experimental results show that the proposed fast mode decision algorithm reduces the computational complexity significantly with negligible coding efficiency.

关键词： Video coding Motion estimation Computational complexity Video sequences displays Physics education Head Navigation Layout Automatic voltage control

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Analysis and Research Based on Electrohydrodynamic Inkjet Printing 21

Analysis and Research Based on Electrohydrodynamic Inkjet Pr...

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21st China International Forum on Solid State Lighting and 10th International Forum on Wide Bandgap Semiconductors, SSLCHINA: IFWS 2024

作者： Chen, Zhaoyu Wang, Xinyi Yin, Luqiao Zhang, Jianhua School of Microelectronics Shanghai University Shanghai201800 China Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai200072 China School of Microelectronics Shanghai Key Laboratory of Chips and Systems for Intelligent Connected Vehicle Shanghai University 201800 China

ISBN: (纸本)9798331541149

Electrohydrodynamic (EHD) inkjet printing has the advantages of high precision and high automation, and its forming mechanism is complex. In this paper, the stress of Taylor cone and its influencing factors were analyzed systematically, and explored the influence of different process parameters on the printing process and effect. The results showed that the larger the voltage, the larger the droplet;the longer the cycle and voltage duration, the larger the droplet;the droplet size was linear with voltage and period. The influence of the printing height on the droplet size was very obvious. Excessive voltage made the printing process very unstable and inaccurate, and the droplet size gap was large and the droplet printing position deviated. Hope to provide some ideas for related research. ©2024 IEEE.

关键词： Ink jet printing

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Salient Object Extraction Based on Region Saliency Ratio

Salient Object Extraction Based on Region Saliency Ratio

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International Conference on Computer and Information Science (ACIS)

作者： Zhongmin Han Zhi Liu Zhaoyang Zhang Yu Lu Weiwei Li Hongbo Yan School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai China

This paper proposes an efficient approach to extract salient objects in an image. A scale-invariant saliency map is first constructed based on a multi-resolution feature contrast calculation, meanwhile the image is segmented into homogenous regions using nonparametric kernel density estimation (NKDE). Then the region saliency ratio of each region combination to its complement is calculated in turn. Finally, salient objects are extracted by maximizing the region saliency ratio. Experimental results demonstrate the effectiveness of the proposed approach.

关键词： Image segmentation Data mining Humans Object detection Information science Kernel displays Image retrieval Content based retrieval Robustness

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Skill and tactic analysis for table tennis matches

Skill and tactic analysis for table tennis matches

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2011 International Conference on Computer Science and Service system, CSSS 2011

作者： Guan, Ye-Peng Ye, Yong Li, Jing-Jing Si, Jing Zhang, Hui School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai China School of Physical Education and Sports Coaching Shanghai University of Sport Shanghai China

ISBN: (纸本)9781424497638

Due to complexity, multiplicity and randomness of table tennis matches, it is necessary to develop some skill and tactic diagnostic models especially an efficient scoring model to get some skill and tactics data for table tennis matches. A scoring model is developed for table tennis matches based on video image processing technology. An input match video is used to analysis the skill and tactic of the players. Once the player scored more than some criteria points constantly, it records this particular event either in the notebook or in database to arouse his attention. By playing the fragment of the record video either slow or fast as he likes, the player can know not only the reason why he lose the points, but also know the skill and tactic of the opponent. Besides it gives a dynamic grow of histogram for every score. The proposal improves the efficiency and quality of the matches. Moreover it provides an efficient guidance in the future's plan making, practice or competition for coachers and athletes. © 2011 IEEE.

关键词： Graphic methods

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Moving object segmentation based on new likelihood functions

Moving object segmentation based on new likelihood functions

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IEEE International Symposium on Intelligent Signal Processing and Communication systems (ISPACS)

作者： Xiang Zhang Zhi Liu Jie Yang Institute of Image Processing and Patter Recognition Shanghai Jiaotong University China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University China

Accurate segmentation of moving objects from a video sequence is still a difficult task. A moving object segmentation method is proposed in this paper to deal with the segmentation splits and defects. First, it is claimed that the confusion point is one reason for the segmentation inaccuracy, and corresponding solution is also presented. According to the solution, new likelihood functions are proposed to compute membership probabilities, which are then used for final segmentation within an energy minimization framework. Unlike related algorithms which compute membership probabilities using kernel density estimation, the proposed method models the membership probabilities as functions with kernel density estimation as the independent variable. Experiments show that improved results are generated by the proposed likelihood functions.

关键词： Radio access networks

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