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international conference on Parallel and Distributed systems (ICPADS)

作者： Saeed AL-Mansoori Emirates Institution for Advanced Science and Technology (EIAST) Applications Development and Analysis Center (ADAC) Dubai United Arab Emirates (U.A.E)

ISBN: (纸本)9781479976164

This paper presents an image compression technique for DubaiSat-2 based on Discrete Cosine Transform (DCT). Initially, the image is divided into non-overlapping sub-blocks and transformed to a frequency domain using DCT. Then the thresholding technique is applied to eliminate lower energy coefficients. The resultant coefficients are quantized at a user specified bit rates. The proposed method is tested on both gray scale and color images. The performance of the proposed method is analyzed using Peak signal-to-Noise Ratio (PSNR).

关键词： image coding Discrete cosine transforms Quantization (signal) PSNR Color Bit rate Frequency conversion

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Wired/Wireless internet Communications: 12th international conference, WWIC 2014 Paris, France, May 26-28, 2014 Proceedings 13

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8458卷

作者： Mellouk, Abdelhamid Hoceini, Saïd Daachi, Boubaker Fowler, Scott University of Paris Est Image Signal and Intelligent Systems Laboratory Créteil - Val de Marne 122 rue Paul Armangot Vitry sur Seine France Linköping University Department of Science and Technology ITN Bredgatan 34 Norrköping Sweden

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Quality of interaction experience in stereoscopic 3D TV

Quality of interaction experience in stereoscopic 3D TV

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作者： Yuan, Haiyue Calic, Janko Kondoz, Ahmet Centre for Vision Speech and Signal Processing University of Surrey United Kingdom United Kingdom

ISBN: (纸本)9781479957514

Quality of Experience has recently become a paramount research topic in multimedia systems, especially in the emerging areas of high-definition and 3D video content. There has been a significant amount of research focusing on 3D content production, compression and delivery. However very little research has been dedicated to the emerging challenges in assessing user experience when interacting with the 3D video content. Interaction tasks such as pointing and selection are critical to the consumer's experience of the 3D video technology. This paper studies the impact of pointing modalities on the quality of interaction experience with stereoscopic 3D television. The conducted user study compares and evaluates three pointing modalities: standard mouse-based interaction, virtual laser pointer and hand gesture modality, using the ISO 9241-9 standard for multi-directional tapping task. The results suggest that the virtual laser pointer modality can provide better quality of interaction experience than other modalities in terms of user performance and user satisfaction. © 2014 IEEE.

关键词： Human computer interaction

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A Low Power CMOS imager based on Distributed Compressed Sensing

A Low Power CMOS Imager Based on Distributed Compressed Sens...

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international conference on VLSI Design

作者： Bhuvanan Kaliannan Vijaya Sankara Rao Pasupureddi Center for VLSI and Embedded Systems Technology International Institute of Information Technology Hyderabad India International Institute of Information Technology Bangalore Karnataka IN

In this work, a low power CMOS imager based on distributed compressed sensing (DCS) is proposed. DCS enables simultaneous multi-channel signal acquisition at sub-Nyquist rates, thereby saving power and hardware complexity. Multiple images are being sensed at sub-Nyquist rates with a pseudo random sequence in the analog domain and the images are recovered simultaneously with the DCS simultaneous orthogonal matching pursuit (DCS-SOMP) algorithm. The complete system has been implemented in a 1.8 V, 0.18 μm CMOS technology with a single multiplexed ADC and is capable of sensing 16 image channels simultaneously. The sensing operation has been realized in the charge domain using switched capacitor techniques and thus consuming very low power. The system performance has been tested with a set of endoscopic images and the results show an average PSNR of 29.17 dB while sensing 16 images at a compression ratio of 1/4 and at 20 frames per second (FPS) with a power consumption of 36.8 mW per image.

关键词： Compressed sensing Sensors CMOS integrated circuits Capacitors image coding image reconstruction CMOS technology

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2013 international Symposium on Vehicle, Mechanical, and Electrical Engineering, ISVMEE 2013

2013 International Symposium on Vehicle, Mechanical, and Ele...

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2013 international Symposium on Vehicle, Mechanical, and Electrical Engineering, ISVMEE 2013

ISBN: (纸本)9783038350033

The proceedings contain 420 papers. The special focus in this conference is on Vehicle Engineering, Mechanical Engineering, Information technology, Manufacturing, Automation, Control, Mechatronics, Measurement and Monitoring, Control and Management, Materials Science, Power systems and Electronics, Computing Methods and Algorithms, Electrical Applications, Communication and networks. The topics include: Study on the larger bus body stability of bend steering;study on photovoltaic array design for solar energy vehicle;study of a new type of dangerous goods transport vehicle rear protective device;an in-vehicle monitoring system with OBD-based vehicle terminal;design of power windows based on POWERLINK industrial Ethernet;the summarize of high power LED headlamps cooling design of automobile;a study on brake noise using the complex modal analysis method;comfort evaluation research on clutch operation of light commercial vehicle;research on integration design of automobile waste heat thermoelectric generation exchanger and engine muffler;simulation and study on ride comfort of articulated dump truck based on rigid-flex coupling;the hall automotive wheel speed sensor and simulation for its signal processing;wind-induced vibration of the rear-view mirrors of car at high speed;research on the affection of vehicle lateral stability related to the improved ABS;the quantification research of engine body defect that tested by ultrasonic phased array;analysis of vehicle interior low-frequency noise based on ATV;the engine oil sump radiated noise optimization design;a novel OFDM radar algorithm in vehicular environment;kinetic analysis of the unbalanced masses of wheel based on ADAMS;study on the fuel-saving efficiency of electric vehicles under empirical test;thermal management system design and simulation of battery pack for electric vehicles;design of system to prevent drunken driving based on internet of vehicles;achieve the WWD-0.8/10 air compressor's motion simulation;the

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Design of location system for underground personnel based on ZigBee technique

Design of location system for underground personnel based on...

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international conference on Software Intelligence Technologies and Applications & international conference on Frontiers of internet of Things 2014

作者： Huang Ye Fan Jianying Hui Dandan Sun Yingchun Harbin University of Science and Technology Key laboratory of the education department of Heilongjiang province China Jiamusi University China

ZigBee is a revolutionary technique for wireless mutual communication. based on it, we designed software and hardware of location system relating to underground personnel in this paper. The system is composed of gateway node, reference node and location node, and those three connected with upper monitor. It can transmit real-time location data from personnel to graphics monitor software, and achieve the function of real-time tracking for location node. Ranging algorithm based on RSSI is adopted as location algorithm. We can minimize location error smaller than 3 meters.

关键词： ZigBee location tracking monitor wireless ZigBee Location tracking Positioning systems MONITOR wireless Personnel location error computer software Received signal Strength Indicator underground

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Design and implementation of algorithm for video compression

Design and implementation of algorithm for video compression

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international conference on Information Communication and Embedded systems (ICICES)

作者： Megha S. Gaoture Trupti H. Nagrare Department of Electronics engineering G.H.R.C.E(Autonomous) Nagpur India Department of Information Technology G.H.R.C.E(Autonomous) Nagpur India

Nowadays, Video Compression has gaining important because of its application in different field like internet. So, there is different algorithm used to achieve the compression of Video. Video Compression algorithms combine Spatial image compression and Temporal motion compression. The sequence of frames contains Spatial and Temporal redundancies that Video Compression algorithms attempt to eliminate or code in smaller size. In this paper, We present a design of Binary motion vector technique with Pruning Discrete Wavelet Transform for the compression of AVI video. Here, Binary motion vector technique used for searching the Best matching block. This technique requires less candidates block than other motion vector technique. Pruning based DWT uses thresholding which will enhance the compression ratio with desirable Peak signal to Noise ratio. This algorithm will be going to simulate on XilinxISE13.1 and implement on SPARTEN3 FPGA.

关键词： Discrete wavelet transforms image coding Algorithm design and analysis Motion estimation Video compression Vectors

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image super-resolution using dictionaries and self-similarity

Image super-resolution using dictionaries and self-similarit...

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international conference on signal Processing and Communications, SPCOM

作者： Gaurav G. Bhosale Ajinkya S. Deshmukh Swarup S. Medasani Ravindra Dhuli School of Electronics Engineering Vellore Institute of Technology Vellore India Image Understanding Group Uurmi Systems Pvt. Ltd. Hyderabad India

image super resolution attempts to extract a high resolution image using one or more corrupted low resolution images. Typical sparse dictionary based super resolution methods remove the undesired effects but may not significantly enhance resolution. In contrast, methods that exploit local self-similarity enhance the native resolution as well as the undesired artifacts present in the low resolution image. In this paper, we propose a novel single image super resolution approach that renders high resolution images by exploiting dictionary based non-local methods and uses local similarity of small spatial patches of the image to eliminate undesired artifacts. Our quantitative results on several test datasets are promising.

关键词： image reconstruction Dictionaries image edge detection Mathematical model Spatial resolution Equations

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High Dynamic Range image based on Block-based Edge Strength for Embedded System Design

High Dynamic Range Image Based on Block-Based Edge Strength ...

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

作者： Wen Kai Tsai Chang Jie Lai Ming Hwa Sheu Tsu Hsiung Chen Information and Communications Research Laboratories Industrial Technology Research Institute Hsinchu Taiwan Department of Electronic Engineering National Yunlin University of Science & Technology Yunlin Taiwan Department of Computer Science and Information Engineering Taipei Chengshih University of Science and Technology

With the advancement of technology, improving the dynamic range of the monitor screen has become an urgent matter. Because the dynamic range of surveillance cameras is much lower in comparison to what is actually happening in the real-world, they tend to miss out some important information. Current surveillance systems often rely on automatic exposure control to obtain images, hence the images are dark and unclear at night. In order to make the images brighter and clearer at night, it is necessary for surveillance cameras to proceed with long exposure time during shooting, but this will lead to moving objects blurring. Thus, the existing image exposure fusion technology can not solve this problem. Therefore, we propose a novel image exposure fusion algorithm that uses block-based edge strength to find the optimal blocks from two differently exposed images. After that, a high dynamic range image is fused from these blocks. Finally, our approach possesses lower computing complexity, memory requirements and high image quality such that it is suitable for implementation in a generally embedded platform.

关键词： image edge detection Dynamic range Cameras Surveillance Heuristic algorithms image fusion Consumer electronics

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Design and implementation of networked real-time control system with image processing capability

Design and implementation of networked real-time control sys...

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UKACC international conference on Control (CONTROL)

作者： Zhao Jun Guo-Ping Liu Center for Control Theory and Guidance Technology Harbin Institute of Technology Harbin China School of Engineering University of South Wales Pontypridd United Kingdom

This paper describes the design and implementation of an OMAP3530-based networked control system which has real-time image processing capability. It integrates an ARM core and a DSP core in the controller. The ARM core with Linux operating system is responsible for applying functional services and the DSP core is responsible for executing image processing algorithms. The due-core structure makes the novel controller available for advanced control and image processing so that the designed control system expands the application of the existed networked controllers to machine vision. Finally, a reliable application for vision-based mobile robot localization demonstrates the effectiveness of the designed system.

关键词： Digital signal processing Real-time systems Software packages Message systems image processing Linux

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