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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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Stereo image Sequence Coding based On Phase Correlation Disparity Estimation

Stereo Image Sequence Coding Based On Phase Correlation Disp...

引用

international conference on signal-image technology and internet-based systems

作者： Wei-Ming Chen Cheng-Chi Chiang Ping-Hsiang Huang Dept. of Comput. Sci. &amp Inf. Eng. Nat. Ilan Univ. Ilan Taiwan|c|

ISBN: (纸本)9781479932122

This paper will discuss how to compress the stereo media data in order to avoid getting poor performance when transmitting these data over network. We proposed a novel disparity estimation method for stereo video compression. based on our method, we overcome some of the defects of phase correlation and improve disparity estimation accuracy on stereo image. From our experiments, the results not only show higher compression performance but also better than H.264 compression standard. In computing accelerated testing experiment, our proposed method have higher disparity estimation efficiency than block matching, especially when the resolution of the video are growing up or the foreground in a single frame occupies the most area of the scene.

关键词： Phase Correlation Video Compression Stereoscopic image Sequence Disparity Map

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An Adaptive Gray-Scale image Watermarking Scheme using Smooth and Edge areas of an image

An Adaptive Gray-Scale image Watermarking Scheme using Smoot...

引用

international conference on Intelligent systems and signal Processing (ISSP)

作者： Dharwadkar, Nagaraj V. Amberker, B. B. BLDE As VP Dr PG Halakatti Coll Engn & Technol Dept Comp Sci & Engn Bijapur 586103 Karnataka India Natl Inst Technol Dept Comp Sci & Engn Warangal Andhra Pradesh India

ISBN: (纸本)9781479903177;9781479903160

In this paper, we propose an adaptive watermarking scheme for gray-scale images. The proposed scheme use the difference between the consecutive and non-overlapping pair of pixels to embed the watermark bits. The watermark is embedded into the pair of pixels using least-significant bit(LSB) substitution method. The difference between pair of pixels is used to determine the smooth and edge regions of the image. In smooth region less number of watermark bits are embedded and in edge region more number of watermark bits are embedded. The pixels of the cover image are categorized into different types using the embedding capacity which is determined by the difference between the pair of pixels. For any pair of consecutive pixels, both pixels are embedded with variable bits of watermark using LSB substitution method. Here, the number of bits to be embedded is decided based on the category to which the difference value belongs. After embedding, the difference value between embedded pair of pixels is retained by readjustment so that the quality of the image is maintained and embedding capacity is improved. The experimental results show that the proposed scheme has high embedding capacity and less distortion in embedded images.

关键词： Adaptive Edge region Smooth region Pixel Difference Watermark

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A Multisensor Surveillance System for Automated Border Control (eGate)

A Multisensor Surveillance System for Automated Border Contr...

引用

10th IEEE international conference on Advanced Video and signal based Surveillance (AVSS)

作者： Schreiber, David Kriechbaum, Andreas Rauter, Michael AIT A-1220 Vienna Austria

ISBN: (纸本)9781479907038

This paper presents1 a multisensor surveillance system used inside an Automated Border Control (ABC) system (more specifically, an eGate). The system consists of two parts: counting the number of persons inside the eGate (person separation), ensuring that no more than one passenger is present;left luggage detection, ensuring that the passenger did not leave any item inside the eGate. These tasks are performed using a top-view mounted sensor inside the eGate, consisting of a trinocular camera configuration comprised of a monochrome stereo setup which delivers depth information, and a color camera mounted in-between, capturing color information. In contrast to already existing ABC solutions, which mostly use electronic sensors, e. g. simple beam technology, for person separation and left item detection, we introduce vision based technologies to elevate the security of such systems to a higher level, also increasing the usability for the border guard. The system achieves real time and had been demonstrated and evaluated at the Vienna international Airport.

关键词： airports image colour analysis object detection sensor fusion stereo image processing travel industry video cameras video surveillance

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Application of DPX in Wideband signal Detection

Application of DPX in Wideband Signal Detection

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4th international conference on Digital Manufacturing and Automation (ICDMA)

作者： Guo Shijian Sun Gang Li Po Chen Zengping NUDT ATR Key Lab Sch Elect Sci & Technol Changsha 410073 Hunan Peoples R China

ISBN: (纸本)9780769550169

In the circumstance of complex electromagnetism, the systems for signal detection need the abilities of wideband collection and processing, high probability of intercept and capture, and meanwhile fast and exact analysis. Then, the wideband signal detection approach based on Digital phosphor technology (DPX) is proposed in this paper for complex electromagnetic environment. This method analyzes the DPX image of the received signal, and can accurately measure the frequency domain signal parameters of multiple signals. Also, the method for signal detection based on cumulative spectrum, which was made for DPX after FMM, is introduced. Furthermore, the performance of detecting the emitter signals using this method is systematically analyzed under different conditions - single signal, double signals and multiple signals existing in the same receiver band. When there is more than one signal, the relationship of frequency position is divided into separation, cross and containing. All the resolvent for every situation are particularly explained at the same time. Next, the corresponding simulation tests are presented, where the accumulation time of DPX is set as 100ms. There are three broadband signals in the frequency band. One of them doesn't match the frequency mask and the other two signals do. The frequency of the two matching signals crosses to each other. Every 100 tests are done under the SNR of 5dB, 10dB, 15dB and 20dB, respectively. Finally, the result analysis and conclusion are discussed followed. The simulating results has demonstrated that the multiple signals existing in the same time period can be analyzed effectively by adopting the method proposed in this paper, which improves the capability of detection.

关键词： Wideband signal signal detection Frequency mask matching (FMM) Digital phosphor technology (DPX)

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Automatic image annotation using semantic relevance 13

Automatic image annotation using semantic relevance

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5th international conference on internet Multimedia Computing and Service, ICIMCS 2013

作者： Zhao, Peng Lu, Yijuan Wang, WenBin Zhu, WeiWei Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei 230601 China Dept. of Computer Science Texas State University San Marcos TX 78666 United States

ISBN: (纸本)9781450322522

Due to the semantic gap between low-level visual feature and high-level semantic concept, image annotation plays an important role in image retrieval. In this paper, an automatic image annotation approach using semantic relevance is proposed. It constructs an improved probabilistic model to characterize different regions' contributions to the semantics more accurately based on the spatial, visual and contextual information of the region. And it also helps expand the coverage of the semantic concept with semantic relevance information. The performance of the proposed approach has been evaluated on the standard Corel dataset. The experimental results have demonstrated its potential and effectiveness. © 2013 ACM.

关键词： image annotation

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Text-transformed image classification based on data compression

Text-transformed image classification based on data compress...

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international conference on Data Engineering and internet technology, DEIT 2011

作者： Zhang, Nuo Watanabe, Toshinori Graduate School of Information Systems University of Electro-Communications 1-5-1 Chofugaoka Chofu-shi Tokyo Japan

ISBN: (纸本)9783642288067

image data analysis technology occupies an important position in processing multimedia information. Due to the wide usage of digital images, automatic classification technology with high capacity is necessary for processing enormous number of digital images. In this paper, we propose an automatic classification technique which representing text-transformed image based on data compression. images are first transformed into texts, which are then divided into segments and replaced by characters. Then, instead of using texts themselves, the similarity between compressibility vectors of texts are used in the classification step, in which we focus on the compressibility of the text string. Finally, the effectivity of the proposed method is verified in our experiments. © 2013 Springer-Verlag GmbH.

关键词： image classification

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Design and implementation for image reconstruction of CompressiveSensing using FPGA

Design and implementation for image reconstruction of Compre...

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3rd Annual IEEE international conference on Cyber technology in Automation, Control, and Intelligent systems, IEEE-CYBER 2013

作者： Bi, Sheng Xi, Ning Lai, King Wai Chiu Pan, Xuwei Department of Mechanical and Biomedical Engineering City University of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)9781479906109

A novel single pixel camera system has been introduced to overcome the current limitation and challenges of traditional focal plane arrays. This new hardware system mainly employs one photo-sensing element/pixel and a digital micromirror device (DMD). By consideration of a new mathematical theory and algorithms of compressive sampling, we can reconstruct images based on the measurement results of the photo-sensing element. However, the development reminds challenge. Since large amount of data is accessed and the inherent delay of instruction cycle within transporting data on the DMD, it makes real-time processing of image recovery difficult. Conventionally, the pattern data was transported to DMD from PC through USB interface. Since the USB interface limited the data transfer speed, the total time of signal collection and image reconstruction was about 30 minutes. In this paper, FPGA is used to transport data from SDRAM to control the DMD, and at the same time, the signal of the photo-sensing element is acquired. As a result the control of the DMD can be improved and imaging processing time can be reduced. The development includes various components such as SDRAM interface, FIFO Data buffer, ADC interface, USB interface and DMD control interface. Comparing with the method of transporting data through PC, the time for image recovery is greatly reduced. © 2013 IEEE.

关键词： Compressed sensing

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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

international IEEE conference on signal-image Technologies and internet-based System

作者： Yuta Miyazawa Yukiko Yamamoto Takashi Kawabe School of Information Environment Tokyo Denki University Inzai Japan

ISBN: (纸本)9781479932122

This paper conceptually proposes a context-aware recommendation system that gives/recommends optimal information for users based on 1) the content of an image using content-based image retrieval engines, 2) the contextual information of its similar images on the Web, and 3) user context, namely users' situations such as their location, we are aiming to extract the detailed information to the text-unpresentable images. It is expected to increase the precision of content-based image matching by combining the partial context obtained there from other types of data such as contextual information.

关键词： Context image retrieval Data mining Knowledge discovery Natural languages Information retrieval Poles and towers

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image Tracking based Measuring System for Adaptive English Learning

Image Tracking Based Measuring System for Adaptive English L...

引用

international IEEE conference on signal-image Technologies and internet-based System

作者： Makoto Shishido School of Information Environment Tokyo Denki University Inzai Japan

ISBN: (纸本)9781479932122

It is significantly obvious that English learning requires personally adapting systems. In order to satisfy this need, measuring the degrees of understanding by image tracking is fairly important. This study investigated whether eye tracking could be employed as a measure of the effectiveness of an E-Learning material on reading. Learners' eye fixations were used as a means of noticing. Results showed a relationship between different proficiencies and patterns of fixations. Suggested effects were found for improving reading proficiencies with eye movement trainings. Future possibilities for technological development of a combining system of image gazing with an E-Learning material are also proposed.

关键词： Materials Electronic learning Training Tracking Computers Cameras Vocabulary

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Evacuation Guidance System Using Everyday Use Smartphones

Evacuation Guidance System Using Everyday Use Smartphones

引用

international IEEE conference on signal-image Technologies and internet-based System

作者： Takuya Wada Tomoichi Takahashi Meijo University Graduate School of Science and Technology Nagoya Japan Faculty of Science and Technology Meijo University Nagoya Japan

ISBN: (纸本)9781479932122

During an emergency, the situation can change rapidly and emergency information is crucial to evacuate people safely from buildings. The guidance system we use during emergencies should be the same as those used in everyday life. Nowadays, almost everyone has a mobile phone. A guidance system using smartphones can provide more useful information than guideboards on walls or announcements. We propose an evacuation guidance system that can provide information during emergencies even when the internet is unavailable.

关键词： Smart phones Buildings internet Global Positioning System Layout Tsunami

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