Proceedings of 3rd International Conference on Multimedia Technology(ICMT-13)

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226 articles

Real-Time 3D Visualization of Temperature Distribution for Data Center Thermal Management

Chen Xin, Zhen Hui, Han Yueqi, Wei Zhaoyang, Dong Jinong, Wu Kaichao
Heat management has become one of the most critical challenges to the rapid development of data centers. To address this issue, a 3D visualization technique is proposed in this paper to analyze and manage temperature distribution in data center rooms. At first, a room is divided into uniform grids and...

A Hierarchical Algorithm for Document-images Fast Matching

Tan Shuang, Jia Yan, Fan Hua
As digital libraries and document images largely use in the network, how to retrieve them quickly become one of the key issues. This paper presents a hierarchical matching algorithm to achieve fast retrieval of document images. Firstly, we can quickly find the possible matching location through approximate...

A Fast AFC Loop with A Low Power Consumption, Low Phase Noise LC VCO

Shu Jiayun, Li Zhiqun
This paper presents a fast Automatic Frequency Calibration (AFC) Loop with a low power consumption low phase noise LC voltage controlled oscillator (VCO) at 4.8GHz for WSN Application. The VCO adopts complementary differential negative resistance structure with switch resistor biasing which achieves...

The Implementation of Ray-tracing Global Illumination Basing on JavaScript

Hao Zhang, Xiaorong Du, Beishan Wang
Global illumination rendering is one of the pivotal techniques necessitated by 3D scenes' simulating; thus the quality of global illumination renderer would significantly affect the reality of such a simulation. Based on ray tracing, one of the major algorithms which aim to achieve great and realistic...

A Novel Scheme of Video Quality Estimation for the ROI Transcoding Video

Yao Ting
Because of the limitation of bandwidth and display screen size on the mobile devices, the experience of watching videos on the mobile device is extremely limited, especially in real-time video conferencing. This issue can be solved by the ROI (Region of Interest)-based transcoding. To verify the result...

Smart-Eyes: a FPGA-based smart camera platform with efficient multi-port memory controller

Xie Kunzhi, Qiao Fei, Qi Wei, Yang Huazhong
In this paper, a FPGA-based smart camera platform is proposed. A Xilinx FPGA has been adopted as the core device. Xilinx ISE Design Suite has been used as the design tool and Verilog as the program language. In order to validate the platform, two real-time demonstrations have been implemented. In order...

Recover 3D Information of the Moving Object from Video Streams

Zheng Yu-tong, Li Ming, Liao Fang
Perception of the moving object in 3D from video streams has been one hot topic in computer vision. We present a fast method to reconstruct 3D information of the moving object from binocular video streams. System is assembled as two pipelines, technica are used to excavate the potential parallelism....

Based on DV - Hop of wireless sensor network node localization algorithm improvements

Jiang Changhong, Zhao Donglong, Tian Wei
DV-Hop algorithm is a classical range-free localization algorithm used for node locating of wireless sensor network. After analyzing the localization principle and limitation of DV-Hop algorithm the authors proposed an improved DV-Hop algorithm The new algorithm used cluster strategy to reduce communication...

Key Technical Analysis on Steganography and Steganalysis

Ge Huayong, Liu Hongqiang, Jin Zhaoyang
In this paper, we present F5 steganographic algorithm and its steganographic system, then we embed 35.5kb information (a txt document) into a 99.7kb JPEG image by using F5 steganographic system. The experimental result shows that when we choose k=3 which is based on utilization rate of the data(R), then...

Experimental Research on The Effectiveness of Animated Instruction

Zhao Liying, Huang Tao
In this experiment(N=69), we investigated the learning effect of static graphic vs. animation, as well as the effect of user-control dynamic presentation.The results show that system-control animation has the highest cognitive load and the worst learning effect. The learning outcome of static picture...

Immersive Virtual Tour using Multi-projection with Remote Cluster Rendering

Lin Zhijie, Zhao Lei, Yuan Qingshu, Lu Dongming, Li Yuqi
This paper introduces a new virtual tour method which integrates multi-projection techniques, remote cluster rendering and pattern tracking. We use geometric calibration and edge blending to create a seamless and consistent display and utilize remote render cluster to render high-resolution scene in...

Improved Multidimensional Representation Using Shearlets

Gong Dewei, Chen Jianhai, Chai Jinliang, Di Jizheng
Despite effective tools in signal and image processing, traditional wavelets methods lose the ability to process multi-dimensional data. In this paper, we describe a new class of multidimensional representation systems, called shearlets. Similar with wavelets, this new representation can be associated...

Phase contrast imaging (PCI) investigation for mouse kidney

Yifeng Peng, Ze hua Zhao, Tiqiao Xiao, Peiping Zhu, Wei He
Objective To evaluate the privilege of X-ray phase contrast imaging on the microstructure of mouse kidneys, and explore the imaging differences on kidney images obtained by DEI and in-line outline X-ray imaging (IOXI) with synchrotron radiation (SR) facility. Materials and Methods The SD mouse kidneys...

Estimation Formula for Noise Variance of Motion Blurred Images

Weiguo He
The key problem in restoration of motion blurred images is how to get the point spread function and the noise information. It is commonly assumed as the white Gaussian noise. The paper corrects mistakes in literature [1] and puts forward an accurate estimation formula for noise power of linear motion-blurred...

The study on the application of virtual reality technology in the three-dimensional courseware

Hu Xiaoqiang, Wang Xinting, He Ling
The virtual reality technology (referred to as VR) is the application of IT technology represents the last decade. It has powerful interactive features, give a visual representation of the three-dimensional information and content is widely used in the Products presentation, skill straining and other...

Image Denoising Based on the Modied ROF Model

Jiang Yan, Zhang Shu-Ling
In this paper a new image denoising model based on the ROF model is proposed. This proposed model can reduce the noise effect and also damp the staircase effect generated by the ROF model. Existence and uniqueness of solution are proved. Numerical examples illustrate advantages of our proposed model.

Design of Low Voltage Up-conversion Mixer for WSN Applications

Wu Lei, Li Zhiqun
A high linearity up-conversion mixer operating at 700~900MHz with 1V supply using 0.18 m CMOS technology is proposed in this paper. This up-conversion mixer is composed with two double-balanced mixers and is based on the Gilbert mixer. The quadrature differential signals are put to the mixer, and the...

Computer Games Designed for Disaster Prevention Learning

Huang Chun-Hsiung, Chung Szu-Ming, Hsu Mu-Chiun
Disaster prevention learning is an important foundation to strengthen the land sliding disaster prevention and advocacy, to enhance people’s knowledge, skills and attitude toward disaster prevention, and then to reinforce social force of prevention. This study uses Flash software tool to develop a disaster...

Moving Target Detection Algorithm Research Based on Background Subtraction Method

Wan Songlin, Liang Haodong, Wang Taifang, Cui Zhi
Based on Surendra algorithm, an improved adaptive threshold algorithm has been proposed. Simultaneously, a gradient update rate algorithm has also been proposed to better adaptability and robustness in various videos. These two algorithms with real-time and detecting time shorter have been effectively...

KAZE Feature Point with Modified-SIFT Descriptor

Chen Meixi, Yuan Yule, Zhao Yong
In this paper,we present a novel descriptor,called Modified-SIFT (M-SIFT),which is more suitablefor KAZE feature point than other descriptors such as:SURF and SIFT.Their combining even outperformsSIFT matching algorithm and standard KAZE algorithm. We present extensive experimental image matching results...

The Research of The Method of Moving Object Detecting in Video Surveillance System

Wu Hongxia
Moving target detection is a very important in the intelligent monitoring system; however, the detection is still difficult in complex background. Therefore, the paper is based on the method of traditional background difference, we study that the video color information is taken as the detection of the...

A Study of Compressed 3D Video Perception based on Subjective Quality Assessment

Du Xiangkun, Jiang Xiuhua, Wang Caihong
This paper presents a specific subjective quality assessment to study the perceptual issues about 3D videos processed by the compression system based on H.264/MVC (Multi-view Video Coding). The subjective evaluation is conducted according to the ITU recommendations. The preparation, concrete process...

Computer Simulation of Denial of Service attack in Military Information Network using OPNET

Pei Lichun, Li Chenhui, Hou Runfeng, Zhang Yanjun, Ou Hongyan
According to designing DoS attack model, the methods based on OPNET of simulating DoS attack which can be achieved are summarized. The attack model is given from simulating SYN flood attack. Simulation results show that the network simulation is a productive approach to analyze and estimate the impact...

SIFT-MIC Based Matching Location Algorithm for Wire Bonding

Kong Fanzhi, Xiao Xiao
Computer vision inspection system is often applied in automatic wire bonding to ensure the location accuracy and speed, while feature selection affects the performance of inspection system. In this paper, a new feature extraction and matching location algorithm based on SIFT-MIC is proposed for wire...

An Improved Single Image Haze Removal Algorithm Based on Dark Channel Prior and Histogram Specification

Zhu Qingsong, Yang Shuai, Xie Yaoqin
We introduce an improved single image haze removal algorithm, which combines dark channel prior (DCP) and histogram specification. First, the dark channel prior knowledge proposed by Kaiming He is analyzed and a conclusionis drawn that the haze removal image based on dark channel prior will have a ten-dency...

Lyric Oriented Rhythmic Framework Generating for Automatic Chinese Song Composition

Wu Hao, Xie Lu, Wu Xihong
This paper proposes a lyric oriented rhythm framework generating (LORFG) method for automatic Chinese song composition. For a given lyric, this method constructs a rhythmic framework, in which each linguistic prosodic unit (such as sentence, prosodic phrase, prosodic word, and Chinese characters) in...

A Preemptive Batching Schedule Method Based on Multifactor in DSMS

Zhang Lijie
We propose a preemptive batching schedule method based on multifactor over data stream. We divide operators sequence into some different operator units in my schedule approach, the different priorities, which are changed as operator units’ output rate, are assigned based on operator units’ output rate....

The comparison of window functions for different subbands in Phase Vocoder

Bin Xiao, Yi Jiang
The phase vocoder[1] has long been a well established tool in pitch shifting technology. It analyzes and synthesizes audio signal via short-time Fourier Transform. Unfortunately, Fourier Transform leads to the inevitable inherent frequency leakage which decreases the accuracy of the pitch shifting effect...

The principle curvature-driven diffusion model for image de-noising

Xin Qiao
In this paper, we discuss a weighted average of the maximum and minimal principle curvature as the diffusion coefficient for de-noising digital images with an additive noise. The main advantage of this approach is that it preserves important structures similar to Gauss curvature-driven diffusion, and...

Recognition Method for Handwritten Digits Based on Improved Chain Code Histogram Feature

You Qian, Wang Xichang, Zhang Huaying, Sun Zhen, Liu Jiang
The chain code histogram feature is a simple and effective feature extraction technology. This paper proposes improvements based on Chain Code Histogram (CCH) and its first differential characteristics. According to the first Differential Chain Code Histogram (DCCH), the turning points in the direction...

Object Detection in Image with Complex Background

Li Dong, Li Yali, He Fei, Wang Shengjin
Object detection is the key technology in computer vision, with broad application prospects. Object detection has great research value and practical significance as a hot spot of video surveillance in recent years. This paper proposes an algorithm for ship detection in image with complex harbor background....

Segmentation in Soccer Video Based on Fusion Algorithm

Zhang Qiao, Shi Ping
According to the practical application of soccer video, the characteristics of the data structure and the shot conversion methods of soccer videos are described. A method of shot segmentation in soccer video based on fusion algorithm is proposed. In this method, the 2 histogram match based on gray histogram,...

Oriented bicyclic graphs whose skew spectral radius does not exceed 2

Ji Jia-Hui, Xu Guang-Hui
Let S(Gs ) be the skew-adjacency matrix of the oriented graph Gs of order n and l1;l2; ¢ ¢ ¢ ;ln be all eigenvalues of S(Gs ). The skew-spectral radius rs(Gs ) of Gs is defined as maxfjl1j; jl2j; ¢ ¢ ¢ ; jlnjg. In this paper, we investigate oriented bicyclic graphs whose skew-spectral radius does not...

A 2.4 GHz 1V Low Power LNA in Subthreshold Region

Liu Hangji, Li Zhiqun, Zhang Meng
Thispaper presents the analysis and design of a 1V lowpower differential low noise amplifier (LNA) in 0.18 µm RF CMOS technology for 2.4 GHz WSN applications.The circuit benefits from subthreshold region and gm-boosting techniques. These techniques provide a high gain andreducenoise figure (NF) and power...

Multi-evidence fusion recognition of ship targets in sea battlefield’s remote sensing images

An Yu, Wang Xiaofei, Xia Xuezhi, Li Lin
Reliably recognizing ship targets in the sea battlefield has become an increasingly pressing need, as the capabilities for image acquisition are growing rapidly. In the research, a modified ship targets fusion recognition model based on the Dempster-Shafer evidence theory is proposed. The algorithm firstly...

Statistical Analysis of Residual Distribution in H.264 And A New Thought About Video Coding Algorithm

Qian Qian, Zhang Wenhui, Sun Na
High computation complexity has significantly impacted H.264/AVC’s application and promotion in real-time coding. As a result, how to reduce as much computation complexity as possible while ensuring high coding efficiency becomes an important subject in the study of video coding technology. Many scholars...

Design of a 24 GHz Programmable Frequency Divider in 65-nm CMOS Process

Bao Huagui, Li Zhiqun, Li Qin, Wang Zhigong
A 24 GHz programmable frequency divider in 65-nm CMOS process is presented in this paper. The divide ratio can be varied from 208 to 270 in a step size of 2.The divider consists of a divide-by-2, an 8/9 dual-modulus prescaler, a programmable pulse-swallow counter and a buffer. The post simulation results...

Efficient and effective JPEG compressed domain image retrieval

Schaefer Gerald
Content-based image retrieval(CBIR) has been an active research area for more than two decades. However, while almost all images are stored in compressed form, the vast majority of CBIR algorithms operate in the (uncompressed) pixel do-main. This not only leads to a computational overhead for feature...

Research on Personalized Recommendation System in E-Learning Based onSemantic Web

Gu Yun-Feng
The semantic web is the future of web, which gives the network information with well-structured semantic meaning. Aiming at the need for characteristic learning, this paper analyzes the development of the personalized recommendation system, puts forward a personalized recommendation system in the E-Learning...

A Video Deblurring Optimization Algorithm Based on Motion Detection

Zhang Yinan, He Jing, Yuan Jie
Although the performance of image acquisition devices has been improved dramatically in recent years, especially in the resolution and clarity, defocusing and motion blur are still big problems. Upgrading the devices with the better hardware is one way to solve the problem, but the costs will usually...

New Features of Multimedia Courseware Making in Mobile Internet Times-Taking Adobe E-learning Suites 6 for Example

Ruile Lan, Liping Li, Yonghua Mo, Liangquan He
With the advent of mobile internet times, the making of multimedia courseware has made new progress and emerged new features on ideas, tools and practical applications. Taking Adobe E-learning Suites 6 for example, the paper explains new ideas of making of multimedia courseware and indicates that tools...

A Graph Model for Cross-modal Retrieval

Wang Shixun, Pan Peng, Lu Yansheng
With the rapid growth of multimedia document on the web, cross-modal retrieval has become an important issue. The modality of a query is different from that of the retrieved results in cross-modal retrieval. In this paper, we propose a novel graph model, which not only combines content and semantics...

Video Standard Compliant Layered P2P Streaming

Chiu Man Yau, Wu Kangheng, Lei Zhibin, Chiu Dah Ming
Peer-to-peer (P2P) streaming over Internet needs to consider the dynamic bandwidth fluctuations and various client device capabilities. To maximize the network utilization and to achieve stable P2P streaming, we propose a novel multi-layered P2P streaming system in which the scalable video bit-stream...

TM Water Area Revision Based On MODIS Time Series Data

Guodong Yang, Lei Li
It is meaningless to compare global land surface water area of two periods directly considering that TM images are mono-temporal and water products interpreted only reflect water distribution at some certain moment. Due to the large inter-annual and seasonal variation of water, there exist dry season,...

Speech Enhancement in Presence of Colored Noise Using An Improved Least Square Estimation

Xia Youshen, Wang Pengyu
Speech enhancement in presence of colored noise has been of signi¯cant topics. This pa-per presents a novel parameter estimation-based method for speech enhancement under colored noise environments. Parameters of speech signal modeled as autoregressive process are estimated by using an improved least...

Evaluation of visual comfort for stereoscopic video based on region segmentation

Wang Shigang, Wang Xiaoyu, Lv Yuanzhi
In order to accurately reflect the human eye’s visual comfort in the process of viewing stereoscopic video, a method based on region segmentation is proposed to assess the visual comfort of stereoscopic video. First, adaptively segment and extract the interested area of the human eye from the sequence...

Design of Low Voltage Low Noise Amplifier for 800MHz WSN Applications

Wu Zhaolong, Li Zhiqun
This paper presents a 1V low noise amplifier (LNA) for 700~900MHz WSN applications in 0.18mm RF CMOS process.The LNA uses capacitor cross-coupled, current-reused and noise cancellation techniques to reduce noise and power consumption.The simulation results are as follows: The voltage gain is variable...

A Low Voltage Current-reuse Quadrature Down-conversion Mixer for WSN Application

Xu Junjun, Li Zhiqun
This paper introduces a low voltage, low power down-conversion mixerbased on 0.18mm RF CMOS process, the transconductance stage of which uses the current-reuse.The mixer is composed of two identical mixers which share the same transconductance stage,folded switching stage,active load stage,and common-mode...

An Energy-Efficient Zoning Clustering Hierarchy for WSNs

Tong Hong, Chen Hui, Li Zhaoyu, Ma Shujuan
Focused on the limited energy characteristics of routing protocol in wireless sensor networks, we propose an Energy-Efficient Zoning Clustering Hierarchy (EEZCH) algorithm based on LEACH and LEACH-C. In EEZCH, the monitoring area is divided into several zonings (clusters). The cluster head is selected...

A Noise Reduction Method Based on LMS Adaptive Filter of Audio Signals

Liu Yang, Xiao Mingli, Tie Yong
Noise reduction of audio signals is a key challenge problem in speech enhancement, speech recognition and speech communication applications, etc. It has attracted a considerable amount of research attention over past several decades. The most widely used method is optimal linear filtering method, which...