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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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A TDI CCD based method for light target location in large field of view

A TDI CCD based method for light target location in large fi...

引用

IEEE international conference on signal Processing, Communications and Computing (ICSPCC)

作者： Xiaoyue Wang Ping Song Jiangpeng Wu Yang Cheng Intelligent Robotics Institute Key Laboratory of Biomimetic Robots and Systems Ministry of Education Beijing Institute of Technology Beijing China Intelligent Robotics Institute Key Laboratory of Biomimetic Robots and Systems Ministry of Education Beijing Institute of Technology 5 South Zhongguancun Street Haidian District 100081 China

In this paper, the method of two TDI (Time Delay Integration) CCD intersection is proposed to achieve the location of light target in a large field. Frame difference method combined with OTSU threshold segmentation algorithm is proposed to identify the image with light target. Besides, in order to reduce the storage capacity, we carry out binarization processing on target image. For getting the position of the light target in target image, the grayscale centroid algorithm is presented. In this paper, TDI CCD with high-speed and high-sensitivity is utilized as image sensor, and MATLAB is selected as image processing software. In our test, we carry on image processing by using the above algorithm with the images of 8192*32 pixels acquired from the 320m*240m field by two TDI CCD cameras in MATLAB. With the method of intersection of two TDI CCD, the location error is within 5% compared with the result achieved by total station instrument.

关键词： Charge coupled devices Cameras image segmentation Gray-scale Robot vision systems MATLAB

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An Effective Iterative Back Projection based Single image Super Resolution Approach

An Effective Iterative Back Projection Based Single Image Su...

引用

international conference on Communication systems and Network Technologies (CSNT)

作者： Milan N. Bareja Chintan K. Modi Electronics & Communication Engineering G. H. Patel College of Engineering & Technology Vallabh Vidyanagar Gujarat India

In this paper, an effort is made to enlarge a low resolution image. This paper presents an effective novel single image super resolution approach to recover a high resolution image from a single low resolution input image. The approach is based on an Iterative back projection (IBP) method combined with the Canny Edge Detection and error difference image to recover high frequency information. This method is applied on different natural gray images and compared with different existing image super resolution approaches. Simulation results show that the proposed algorithm can more accurately enlarge the low resolution image than previous approaches. Proposed algorithm increases the PSNR and decreases MSE and MAE compared to other existing algorithms and also improves visual quality of an image considerably.

关键词： image resolution image edge detection Interpolation signal processing algorithms PSNR Strontium Iterative methods

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The design of an Omnimedia Release Operation Platform based on LAMP architecture

The design of an Omnimedia Release Operation Platform based ...

引用

international conference on image Analysis and signal Processing, IASP

作者： Yiliang Hu Jinjin Zhu Xiuyang Zhang Liang Li Information Engineering College Wuhan University of Technology Wuhan Hubei CN Zhejiang University of Media and Communications Hangzhou Zhejiang CN

We analyze some key technologies in this paper, including technological convergence of CDN-P2P, Operation and release platform technology, online video database, the realization of three-screen interaction, and RIA platform, etc. We also build a uniform data access layer for three-screen interaction. An architecture of Omnimedia Release Operation Platform based on LAMP architecture is proposed and the functional analysis and system design of online video database system, Content Management System, User Management System, Ad Management System, and Operations support management systems are completed in this paper. An Omnimedia Release Operation Platform that can meet all audio and video needs is constructed at the same time.

关键词： Advertising Databases Streaming media Content management Media Authentication Computer architecture

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FPGA-based Platform for Real-Time internet

FPGA-Based Platform for Real-Time Internet

引用

international conference on Emerging Security Technologies (EST)

作者： Maciej Wielgosz Mauritz Panggabean Ameen Chilwan Leif Arne Rønningen Department of Telematics Norwegian University of Science and Technology Trondheim Norway

Field-programmable gate arrays (FPGAs) are widely used in telecommunication due their substantial computational power and flexibly designed architecture. These features become especially important for applications of low transmission latency such as those supported by Distributed Multimedia Plays (DMP) architecture. Thus FPGAs are chosen in this work as the core building block of the system. Complex multi-node telecommunication systems require special design methodology contrary to small ICT applications usually implemented in HDL. The methodology should be based on the appropriate tools from FPGA vendors for support and maintenance. This paper presents an architecture of a module to be embedded in all the FPGA-based nodes constituting a platform for the Real Time internet based on DMP. It is designed using an embedded development kit natively supported by Xilinx and flexible in available cores. We present the implementation results of the network-node module and the description of PCIe-based protocol for inter-FPGA communication.

关键词： Field programmable gate arrays Hardware Real-time systems internet Computer architecture image coding Security

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Dynamic semantic feature-based long-term cross-session learning approach to content-based image retrieval

Dynamic semantic feature-based long-term cross-session learn...

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international conference on Acoustics, Speech, and signal Processing (ICASSP)

作者： Zhongmiao Xiao Matthew J. Clark KokSheik Wong Xiaojun Qi Department of Computer Science Utah State University Logan UT Department of Computer Science University of Portland OR Portland Faculty of Computer Science & Information Technology University of Malaya Malaysia

This paper proposes a novel content-based image retrieval technique, which facilitates short-term (intra-query) and long-term (inter-query) learning processes by integrating accumulated users' historical relevance feedback-based semantic knowledge. The history is efficiently represented as a dynamic semantic feature of the images. As such, the high-level semantic similarity measure can be dynamically adapted based on the semantic relevance derived from the dynamic semantic features. The short-term relevance feedback technique can benefit from long-term learning. Our extensive experiments show that the proposed system outperforms three peer systems in the context of both correct and erroneous relevance feedback.

关键词： Semantics Radio frequency image retrieval Accuracy History Vectors

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image inpainting algorithm based on edge reconstruction

Image inpainting algorithm based on edge reconstruction

引用

2012 IEEE 11th international conference on signal Processing(ICSP 2012)

作者： V.V.Voronin V.I.Marchuk V.A.Frantc K.O.Egiazarian Dept. of Radio-Electronics Systems South-Russia State University of Economics and ServicesShevchenko 147ShakhtyRussian Federation 346500 Dept.of Signal Processing Tampere University of TechnologyKorkeakoulunkatu 1TampereFinland FI-33720

A novel image inpainting algorithm based on edge reconstruction using combined approach capable to restore both image texture and structure is proposed in this paper. For edge and boundary detection and recovery a multi-stage edge detection procedure based on cubic splines is used. The choice of the current pixel to be recovered is decided using the fast marching approach. The Telea method or the exemplar based method are used after this depending on the classification of the regions where to-be-restored pixel is located. The performance of the proposed approach is demonstrated via several examples, showing the effectiveness of the proposed algorithm in removal of small and large objects from the test images.

关键词： image texture analysis edge detection reconstruction spline interpolation inpainting

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MapReduce neural network framework for efficient content based image retrieval from large datasets in the cloud

MapReduce neural network framework for efficient content bas...

引用

international conference on Hybrid Intelligent systems (HIS)

作者： Sitalakshmi Venkatraman Siddhivinayak Kulkarni School of Science Information Technology and Engineering University of Ballarat Ballarat Australia

Recently, content based image retrieval (CBIR) has gained active research focus due to wide applications such as crime prevention, medicine, historical research and digital libraries. With digital explosion, image collections in databases in distributed locations over the internet pose a challenge to retrieve images that are relevant to user queries efficiently and accurately. It becomes increasingly important to develop new CBIR techniques that are effective and scalable for real-time processing of very large image collections. To address this, the paper proposes a novel MapReduce neural network framework for CBIR from large data collection in a cloud environment. We adopt natural language queries that use a fuzzy approach to classify the colour images based on their content and apply Map and Reduce functions that can operate in cloud clusters for arriving at accurate results in real-time. Preliminary experimental results for classifying and retrieving images from large data sets were quite convincing to carry out further experimental evaluations.

关键词： image color analysis Neural networks image retrieval Natural languages Feature extraction Fuzzy logic

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A PCA-DWT-SVD based Color image Watermarking

A PCA-DWT-SVD based Color Image Watermarking

引用

IEEE international conference on systems, Man, and Cybernetics

作者： Muhammad Imran Abdul Ghafoor Department of Electrical Engineering Military College of Signals National University of Sciences and Technology (NUST)

ISBN: (纸本)9781467317139

A robust color image watermarking scheme is proposed, in which a color watermark is embedded into a color image. Principle component analysis is used to uncorrelate the R, G and B channels of both the images. Each channel of color watermark is embedded into singular values of corresponding channel of cover image after discrete wavelet decomposition. As original image is required at the time of extraction of watermark so given scheme is non-blind. Peak signal to noise ratio is used to measure the imperceptibility whereas similarity between original and extracted watermark is measured using normalized correlation coefficient. The scheme was tested against various attacks (including histogram equalization, Gaussian noise, cropping, Y-shearing, X-shearing, affine transformation, salt & pepper), to check the robustness. The results of proposed scheme are compared with existing color watermarking schemes. The results show that proposed scheme is robust and imperceptible.

关键词： Copyright protection Watermarking Principle component analysis Discrete wavelet transform Singular value decomposition Color watermark Imperceptibility Watermarking color image Peak signal-to-noise ratio digital image watermarking signal to noise ratios original image Scheme

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A model based excursion protection algorithm for loudspeakers

A model based excursion protection algorithm for loudspeaker...

引用

international conference on Acoustics, Speech, and signal Processing (ICASSP)

作者： Chenchi Luo James McClellan Milind Borkar Arthur Redfern Center for Signal and Image Processing Georgia Institute of Technology USA Systems and Applications Research and Development Center Texas Instruments Inc. USA

Loudspeakers in portable consumer electronic devices are frequently small in size. Due to the low sensitivity of their drive units, they are pushed to their power handling and mechanical limits by powerful amplifiers in an attempt to reach high volumes. To protect against excessive diaphragm excursions, a model based algorithm is proposed which regulates the voltage input signal to the loudspeaker while minimizing unnecessary system interventions.

关键词： Loudspeakers Coils Prediction algorithms Magnetic circuits Predictive models Transfer functions Mathematical model

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A Statistical Blind image Steganalysis based on image Multi-classification

A Statistical Blind Image Steganalysis Based on Image Multi-...

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

作者： Seyed Mansour Hashemipour Mohammad Rahmati Department of Computer Engineering and Information Technology Amirkabir University of Technology슠 Tehran Iran

In this paper, we proposed a new statistical framework for blind image steganalysis that is shown to be of higher detection performance accuracy than truly current steganalysis systems. Therefore, we have introduced a multi-classification methodology based on image features to group images into the optimal classes in order, to make the models specific and differentiated all the infected images. To distinct images more effectively and thus improving the system accuracy, we have applied Gaussian Mixture Model (GMM) and also an unsupervised algorithm to learn a finite mixture model. Afterward, for each images class we can select and design a specific model of steganalyzer. We have also employed Support Vector Machines (SVMs) to design the models of steganalyzer. Proposed framework can enable us to employ multivariate features extracted from different domains in order, to obtain much better distinction of images and also better designing the steganalyzers in which, can be applied to any types of steganalysis techniques. The result comparison shows the advantages of the proposed framework over the current and prior steganalysis systems with the best overall results.

关键词： Feature extraction Training Transform coding Discrete cosine transforms Accuracy Estimation Multimedia communication

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