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2012 3rd IEEE/IET International Conference on Audio, Language and Image Processing, ICALIP 2012

作者： Li, He-Jian Teng, Guo-Wei Zhang, Zhao-Yang An, Ping Ma, Ran Wang, Jian-Wei Wu, Fu-Qiong Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai 20072 China School of Communication and Information Engineering Shanghai University Shanghai 200072 China

ISBN: (纸本)9781467301718

3D video representation with depth maps is one efficient framework of 3DTV/free viewpoint television (FTV). 3D effect can be reconstructed based on human visional principle of binocular disparity. Texture image plus depth map provides an efficient solution of 3DTV application and real-time depth estimation is one barrier due to huge processing time consumption on complexity algorithm in the processing. An efficient hardware implementation of depth estimation is proposed for real time execution in this paper. The estimation system includes dual-channel video capture, image preprocessing, density pixel matching, pixel correlation and post processing. Each step of the system takes advantage of the hardware resource and adopts pipeline architecture to reduce the latency of combinational logic module at every stage and increase the throughput of the disparity extraction module. Experimental results demonstrate that the proposed method reduces the processing time and improves the ability of high resolution processing. The system can reach 131fps and Full HD (1920x1080) resolution, is suitable for adaptive real-time depth estimation and can be used as a subsystem embedded in the capture system of stereo vision. © 2012 IEEE.

关键词： Stereo vision

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Influence of substrate temperature on the performance of zinc oxide thin film transistor

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Journal of Semiconductors 2011年第4期32卷 57-61页

作者：马军伟冉峰徐美华计慧杰 School of Mechatronical Engineering and Automation Shanghai University Key Laboratory of Advanced Display and System Application Ministry of EducationShanghai University

Top-contact thin film transistors（TFTs） using radio frequency（RP） magnetron sputtering zinc oxide （ZnO） and silicon dioxide（SiO;） films as the active channel layer and gate insulator layer,respectively,were *** performances of ZnO TFTs with different ZnO film deposition temperatures（room temperature, 100℃and 200℃） were *** with the transistor with room-temperature deposited ZnO films, the mobility of the device fabricated at 200℃is improved by 94%and the threshold voltage shift is reduced from 18 to 3 V（after 1 h positive gate voltage stress）.Experimental results indicate that substrate temperature plays an important role in enhancing the field effect mobility,sharping the subthreshold swing and improving the bias stability of the *** force microscopy was used to investigate the ZnO film *** reasons for the device performance improvement are discussed.

关键词： ZnO-TFT bias stability substrate heat RF magnetron sputtering

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Optimal strategy of searching FPD weights scanning matrix using GA-PSO

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Journal of Shanghai University(English Edition) 2011年第4期15卷 292-296页

作者：严利民顾裕灿李建东 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education

This paper discusses a kind of optimal method used for searching flat panel display （FPD） scanning matrix. The method adopts bionic algorithm： genetic algorithm （GA） and particle swarm optimization （PSO） algorithm. The method using single GA is more time-consuming, and the search efficiency is low in later evolution; the PSO algorithm is easily falling into the local optimal solution and appears the premature convergent phenomenon. Hence, a hybrid approach of GAPSO is found to optimize the search for high grayscale weights scanning matrix. Finally in the acceptable time, it finds a weight scanning matrix （WSM） of 256 gray scales with Matlab, whose scanning efficiency reaches 94.73% and the linearity is very good.

关键词： fiat panel display （FPD） weights scanning matrix （WSM） genetic algorithm （GA） particle swarm optimization （PSO） algorithm

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Dependence of electrical and optical properties of IGZO films on oxygen flow

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Journal of Shanghai University(English Edition) 2011年第4期15卷 242-244页

作者：石继锋陈龙龙李倩李喜峰张建华 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education

Amorphous InGaZnO （a-IGZO） films were deposited on the corning eagle XG （EXG） glass substrates using magnetron sputtering method. The structure, surface morphology, electrical and optical properties of these films were investigated by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, semiconductor parameter analyzer and ＇spectrophotometry, respectively. The influence of oxygen flow on the electrical properties of IGZO thin films was studied, showing that increasing oxygen flow changes the resistivity with six orders of magnitude. The contact resistance of ITO/IGZO is 7.35×10^-2 Ω-cm2, which suggests that a good ohmic contact exists between In2O3 ： Sn （ITO） and IGZO film.

关键词： InGaZnO （IGZO） sputtering contact resistance

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Effect of annealing on wet etch of amorphous IGZO thin film

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Journal of Shanghai University(English Edition) 2011年第4期15卷 245-247页

作者：陈龙龙石继锋李倩李喜峰张建华 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education

Amorphous InGaZnO （a-IGZO） film is deposited on the glass substrate by radio-frequency sputtering and the influence of annealing on wet etch of a-IGZO films were investigated. The results show that etch rate of IGZO films decrease with the increase of annealing temperature. Etching taper angle is less than 60° and critical dimension （CD） loss is less than 1μm in over-etching time of 30 s. The fact implies that IGZO films etching with oxalic acid may be a good wet etching way for the thin-film transistor （TFT） array process.

关键词： amorphous InGaZnO （a-IGZO） annealing etching

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Platinum complexes as phosphorescent emitters in highly efficient organic light-emitting diodes

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Journal of Shanghai University(English Edition) 2011年第4期15卷 256-261页

作者：吕燕芳张民艳尚玉柱徐红魏斌王子兴 School of Materials Science and Engineering Shanghai University Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education

applications of platinum complexes as phosphorescent emitters in high efficiency organic light-emitting diodes （OLEDs） were shortly discussed in this paper. key recent studies on highly efficient blue, green, red an... 详细信息

关键词： platinum complexes phosphorescent emitters organic light-emitting diodes （OLEDs） display solid-state lighting

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Adaptive early termination of fast mode decision in MVC based on inter-view correlation

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Journal of Shanghai University(English Edition) 2011年第4期15卷 321-324页

作者：沈礼权张兆杨杨高波 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education College of Communication Engineering Hunan University

Variable size motion estimation （ME） and disparity estimation （DE） are employed to select the best coding mode for each macroblock （MB） in the current joint multiview video model （JMVM）. This technique achieves the highest possible coding efficiency, but it results in extremely large computation complexity which obstructs the multiview video coding （MVC） from practical application. This paper proposes an adaptive early termination of fast mode decision algorithm for MVC. It makes use of the coding information of the corresponding MBs in neighbor view based on inter-view correlation to early terminate the mode decision procedure. Experimental results show that the proposed fast mode decision algorithm can achieve computational 50% computation saving with no significant loss of rate distortion （RD） performance.

关键词： multiview coding mode decision motion estimation （ME） disparity estimation （DE）

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Technical analysis of 3DTV and outstanding issues

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Journal of Shanghai University(English Edition) 2011年第4期15卷 316-320页

作者：张兆杨程浩沈礼权杨高波 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education College of Computer and Communication Hunan University

This paper analyzes the technical characteristic of three-dimensional display technology （3DTV） system and some core technologies yet to be solved. It points out the ways to solve these problems and presents an effe... 详细信息

关键词： three-dimensional （3D） display multi-view/depth coding inter-view rendering discomfort of watching threedimensional display technology （3DTV）

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A new improved depth estimation algorithm based on gradient feature for preserving consistency among views

A new improved depth estimation algorithm based on gradient ...

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3rd International Conference on Multimedia Information Networking and Security, MINES 2011

作者： Qian, Wang Xiang Shen, Liquan Jiang, Yizhong Zhang, Zhaoyang School of Communication and Information Engineering Shanghai University Key Laboratory of Advanced Display and System Application Shanghai China

ISBN: (纸本)9780769545592

In this paper we introduce a more reliable depth estimation algorithm, which is effective in improving the depth maps. With the commercial development of three-dimensional television (3DTV), the corresponding three-dimensional productions are becoming more popular. Especially, the depth estimation is one of the key technologies of multi-view video (MVV) and free viewpoint video (FVV) systems, but how to get accurate depth information is becoming the key issue. Based on the existing depth estimation reference algorithm (DERS), the proposed algorithm takes the improvements of the data term of the global algorithm. As experiment results show, our method not only improves the objective quality of synthesized virtual images in terms of PSNR, but also makes the subjective visual effect better. © 2011 IEEE.

关键词： Image enhancement

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Power test method for LED backlight LCD TVs and software development

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Journal of Shanghai University(English Edition) 2011年第4期15卷 267-271页

作者：刘臻张建华 School of Mechatronics Engineering and Automation Shanghai University Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of Education

As the appearance of local dimming technique, the current existing test methods are not suitable for testing the power consumption of the LCD TVs using the local dimming technique any longer. A test method appropriate to LED backlight LCD TVs using the local dimming technique is proposed in this paper, and then the test software is developed. The results demonstrate that the test software developed can show the real average power consumption of the LCD using local dimming technique, and by normalization the power consumption become comparable for not only local dimming LCD TVs but global dimming LCD TVs. Using the software developed in this paper, the ratio of power saving is clear when an LCD TV using the local dimming technique compared with one without local dimming technique.

关键词： local dimming global dimming power consumption test comparison

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