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检索条件"任意字段=International Conference on Signal Image Technology and Internet Based Systems"

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Examples of Disaster Recovery Activities using Information and Communication technology in Japan

Examples of Disaster Recovery Activities using Information a...

引用

9th international conference on signal-image technology and internet-based systems (SITIS)

作者： Matsumoto, Naoto Fujieda, Shunsuke Miyashita, Kensuke Yamanoue, Takashi SAKURA Internet Res Ctr Tokyo Japan Univ Tokyo Tokyo Japan Kyoto Womens Univ Kyoto Japan Kagoshima Univ Kagoshima Japan

After the Great East Japan Earthquake on 11 March 2011, there are many activities to cope with the disaster and future disasters. This paper discusses examples of disaster recovery activities, using Information and Co... 详细信息

ISBN: (纸本)9781479932115

关键词： Resilient Society Disaster Recovery internet Wi-Fi Big-data Multimedia

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An approach for virtual machine image security

An approach for virtual machine image security

引用

international conference on signal Propagation and Computer technology (ICSPCT)

作者： Anjali Pandey Shashank Srivastava MNNIT Computer Science and Engineering Allahabad

Cloud security being the main hindrance in adoption of cloud computing has some most vulnerable security concerns as: virtualization, data and storage. Here, to provide virtualization security, the components of virtualization (such as hypervisors, virtual machines, and virtual machine images) must be secured using some improvised security mechanisms. Amongst all components, Virtual machine images (VM images) are considered to be the fundamental of whole cloud security. Hence must be secured from every possible attack. In this paper, a security protocol is proposed to mainly protect the VM images from two of the possible attacks. One is the channel attack like man-in-the-middle attack (MITM attack) and second is the attack by a malicious executing environment. It is using a concept of symmetric key's component distribution providing an integrity based confidentiality and self-protection. This protection is based on an encapsulated mobile agent. Here one key component is generated and distributed in a secure manner and the other key component is derived by host platform itself using its own available resource configuration information. In order to verify the validity of this approach in overcoming different kind of security attacks, BAN logic based formal representation is presented.

关键词： Operating systems Elasticity Virtualization Home appliances Servers

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Hand segmentation with metric learning superpixels

Hand segmentation with metric learning superpixels

引用

IEEE China Summit & international conference on signal and Information Processing (ChinaSIP)

作者： Guangdong Hou Daqing Chang Changshui Zhang State Key Laboratory of Intelligent Technologies and Systems Tsinghua National Laboratory for Information Science and Technology (TNList) Department of Automation Tsinghua University Beijing 100084 China

In this paper, we propose a novel method for hand segmentation. To improve the robustness to the wide range of hand appearances and illuminations, we segment the hand area with a superpixels based method instead of a general color model. With the exploitation of the distribution of hand pixels in color space, a distance metric learning stage is designed to promote the segmentation performance. This stage makes the points in hand areas more concentrate and pulls away from the points of background in color space. The comparisons with several widely used algorithms are made on both public available and our own datasets. The experimental results show the superior performance of our method.

关键词： image color analysis Skin Measurement image segmentation Adaptation models Covariance matrices Gesture recognition

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HDR Enhancement based on Bi-curve Mapping for image Sequences

HDR Enhancement Based on Bi-curve Mapping for Image Sequence...

引用

international conference on Intelligent Information Hiding and Multimedia signal Processing (IIHMSP)

作者： Tsong-Yi Chen Chao-Ho Chen Tzu Feng Tseng Guan Ming Luo Wu Chih Hu Nat. Kaohsiung Univ. of Appl. Sci. Taiwan National Kaohsiung University of Applied Sciences Taiwan R. O. C. National Penghu University of Science and Technology Taiwan R. O. C.

In this study, a video enhancement method based on high dynamic range processing was proposed. This method can enhance images that have backlighting problems and are underexposed or overexposed to improve visibility. The proposed method comprises pre-processing, illumination judgment, tone mapping, and color restoration. Initially, a small segment of an image is used to calculate an average luminance value. Next, the average luminance of each segment of the image and the reference average previously calculated are used to judge and classify the illumination of the image to facilitate the subsequent selection and setting of a tone mapping curve. Finally, these classification results are used for tone mapping to restore color and increase visibility. The main feature of this method is that two equations are used to form an S-curve function for enhancing images. This advantage enables new tone mapping curves to replace conventional exponential and logarithmic operations. Therefore, computational complexity can be substantially reduced, rendering this method appropriate for real-time digital video recording systems.

关键词： image color analysis Histograms image restoration Motion estimation Cameras Streaming media Mathematical model

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Tomographic image reconstruction of monitoring flaws on gas pipeline based on reverse ultrasonic tomography

Tomographic image reconstruction of monitoring flaws on gas ...

引用

international conference on Intelligent and Advanced systems, ICIAS

作者： N. Nordin M. Idroas Z. Zakaria M.N. Ibrahim Faculty of Petroleum and Renewable Energy Engineering Universiti Teknologi Malaysia Skudai Johor Bahru Johor MALAYSIA Universiti Teknologi Malaysia Skudai Johor MY Faculty of Electrical Engineering Universiti'Teknologi Malaysia Skudai Johor Bahru Johor MALAYSIA

The capability of a technique to reconstruct a tomographic image of flaws existence on gas pipeline via reverse ultrasonic tomography is presented. The ultrasonic tomography system is developed to monitor flaws circumferentially on pipeline with contactless measurement of distance from sensors to the pipe. In oil and gas industry, the applications of ultrasonic tomography technique for flaw detection in pipeline are limited as this technology is still in its infancy. The design of the ultrasonic tomography system consists of ultrasonic sensing system, data acquisition and image reconstruction system. A reflection mode of ultrasonic sensor is used where the output ultrasonic signal reflected from the pipe to the sensor is acquired. The collected data will be used in image reconstruction system to visualize the image. In image reconstruction process, a linear back projection algorithm is used in order to reconstruct the image of the pipe profile with flaws existence. The back projection algorithm is derived by the mathematical relationship of forward and inverse problem. This reconstruction algorithm is implemented in Matlab software to analyze the performance of the technique for different projection and arrays. Through the simulated result, the reconstructed image based on four projections is found to be less smeared compared to the image based on two projections. The effect of aliasing on the image is also reduced as the number of projection is increased. Several images of pipe with flaws existence are reconstructed based on four projections, with 7 × 7 arrays of pixels and twenty-eight of ultrasonic sensors.

关键词： Acoustics image reconstruction Sensors Tomography Ultrasonic variables measurement Mathematical model Attenuation

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Implementation of Hybrid MC/DCT video codec

Implementation of Hybrid MC/DCT video codec

引用

IEEE international conference on Electro-Information technology

作者： Mandana Norouzi Maziar Loghman Joohee Kim Department of Electrical and Computer Engineering Illinois Institute of Technology (IIT) Chicago IL Usa Illinois Institute of Technology Chicago IL US

The development of multimedia systems, which can handle voice and video, is fast growing. image and video capacity are the essential components of a multimedia system. Representing digital video requires large amount of data, thus, video compression is necessary. In this paper, the Hybrid MC/DCT video codec standard is examined and a video compression algorithm based on the present standard is implemented. The application of Hybrid codec is done with efficiency in mind to provide the least compromise between the computational speed and compression ratio. To make such implementation practicable, the heart of its compression algorithm; the discrete cosine transform, quantization and variable length coding are analyzed carefully. The techniques such as motion compensated prediction which do not considerably reduce image quality, however improve coding efficiency are incorporated in the code. Initially, we briefly review the compression standards; then the hybrid codec technique for the moving pictures is investigated.

关键词： Quantization (signal) image coding PSNR Discrete cosine transforms Transform coding Bit rate Standards

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Ultrasound image Despeckling/Denoising based on a Novel Multi-transducer Architecture

Ultrasound Image Despeckling/Denoising Based on a Novel Mult...

引用

IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Michail Tsakalakis Nikolaos G. Bourbakis Department of Computer Science and Engineering Wright State University Dayton OR USA

In the present paper we have focused our efforts in de-noising/despeckling methods for ultrasound images based on a novel multi -- transducer architecture. Frequency compounding schemes have been implemented and tested in two different images and the results are compared with the state of the art software based methods for ultrasound image despeckling. signal -- to -- noise ratio, SNR, peak -- signal -- to -- noise ratio, PSNR, mean square error, MSE, and the mutual information measures were used to assess the performance of each method. Furthermore, a general scheme for ultrasound image processing based on the notion of sup resolution technique that combines multiple low resolution, LR, images of the same scene to produce one high resolution, HR, image, used in camera technology, is proposed. The nature of the system's architecture has made possible the use of simple but effective compounding techniques for speckle reduction while at the same time sup resolution approach may produce ultrasound images of better quality and higher resolution. Last but not least, the article provides an insight to the major problems and drawbacks of ultrasound imaging systems and how the proposed architecture is capable of effectively dealing with these problems.

关键词： Transducers image resolution Ultrasonic imaging Sensors Noise Arrays

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A novel approach for edge adaptive steganography on LSB insertion technique

A novel approach for edge adaptive steganography on LSB inse...

引用

international conference on Information Communication and Embedded systems (ICICES)

作者： P. U. Deshmukh T. M. Pattewar Department of Computer Engineering R. C. PatelInstitute of Technology Shirpur India

Steganography is define as the process of hiding information in a multimedia carrier. Its ultimate objectives are undetectability and robustness of the hidden data. Least significant bit technique is one of the popular techniques in steganography. Least significant bits of cover are altered by the secret data bits. Changing the LSB's of pixels in smooth regions in the cover image at lower embedding rate will forms the poor visual quality and asymmetry into the stegos. Instead of using smooth regions, edge regions from the cover are selected for data embedding purpose. This novel approach of steganography expand the LSB matching revisited image steganography and propose a new scheme which can select the embedding regions according to the size of secret message and the difference between two consecutive pixels in the cover image. In case of lower embedding rates, only sharper edge regions are used while keeping the other smoother regions as they are. This novel scheme can enhance the security significantly compared with typical LSB based approaches as well as their edge adaptive ones, such as pixel value differencing based approaches, while maintaining excellent visual quality of stego images at the same time.

关键词： image edge detection PSNR Educational institutions Visualization Security Digital images signal processing algorithms

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Context-aware Recommendation System using Content based image Retrieval with Dynamic Context Considered

Context-aware Recommendation System using Content Based Imag...

引用

9th international conference on signal-image technology and internet-based systems (SITIS)

作者： Miyazawa, Yuta Yamamoto, Yukiko Kawabe, Takashi Tokyo Denki Univ Sch Informat Environm Inzai Japan

ISBN: (纸本)9781479932115

This paper conceptually proposes a context-aware recommendation system that gives optimal information for users based on 1) a content-based image retrieval (CBIR) mechanism to search the similar images aiming to extract the detailed information to the text-inexpressible images 2) the contextual information of such similar images searched from the Web, and 3) user's dynamic context or situation considering time-variant factors as well as space factors. It is expected to increase the precision or optimality of recommendation by matching and fusing the context of similar images obtained by CBIR with textual and signal information about user's situation or dynamic context.

关键词： context-aware image retrieval recommendation

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Real Time Displacement Measurement of Lattice Pattern using High Speed Camera

Real Time Displacement Measurement of Lattice Pattern using ...

引用

9th international conference on signal-image technology and internet-based systems (SITIS)

作者： Niitsu, Yasushi Iizuka, Takaaki Furuya, Osamu Tokyo Denki Univ Sch Informat Environm Chiba Japan Topkyo City Univ Fac Engn Tokyo Japan

ISBN: (纸本)9781479932115

The 2D or 3D displacement measurement is required in the vibration testing for the scenic technology because of the complex loading conditions. However, there is no convenient 2D displacement measurement. In this research, 2D displacement measurement with real time image processing is developed. The target of camera image is a lattice pattern drawn on the paper sheet.

关键词： image Processing Displacement Measurement Experimental Mechanics High Speed Camera

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