2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s)最新文献_第8页

A real time multi-bin CABAC encoder for ultra high resolution video 用于超高分辨率视频的实时多bin CABAC编码器

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526444

P. Jayakrishnan, P. V. A. Lincy, R. Niyas

{"title":"A real time multi-bin CABAC encoder for ultra high resolution video","authors":"P. Jayakrishnan, P. V. A. Lincy, R. Niyas","doi":"10.1109/IMAC4S.2013.6526444","DOIUrl":"https://doi.org/10.1109/IMAC4S.2013.6526444","url":null,"abstract":"The demand for better quality pictures, smaller sizes, lower energy consumption, lower cost of appliances has been a fuel for creation of better compression standards and great compression rate. The outstanding compression competence of H.264/AVC is extensively used for video conferencing, online streaming and for HD television. Context Adaptive Binary Arithmetic Coding (CABAC) encoder is a vital part in H.264/AVC (Advanced Video Coding) main and high profiles that provides a real time encoding video of ultra high resolution. A CABAC compresses the components in the video signal according to the probability of those elements in a given context. CABAC encoder provides great compression rate over Context-Adaptive Variable Length Coding (CAVLC) baseline entropy encoder. An entropy encoder is a scheme used for lossless compression. A video sequence is a combination of bits which is referred as syntax element. The allocation of bits in various Syntax Elements (SE) [3] is analysed for the reduction in large amount of bit level operations involved and computational complexity involved. An optimised scheme for accessing the contexts and a Binary Arithmetic Encoder (BAE) capable of processing four bins per cycle m nm, is presented. Hence parallelism and throughput is achieved by the means of reduction in syntax and bit level dependency. The proposed fully hardwired encoder is synthesised towards a 90nm CMOS cell library in ASIC flow using Cadence RTL Compiler.","PeriodicalId":403064,"journal":{"name":"2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125325891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

OpenBTS based microtelecom model: A socio-economic boon to rural communities 基于OpenBTS的微电信模式:农村社区的社会经济福利

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526526

N. Prasannan, G. Xavier, A. Manikkoth, R. Gandhiraj, R. Peter, K. P. Soman

引用次数: 15

A survey on various privacy and security features adopted in MANETs routing protocol manet路由协议中采用的各种隐私和安全特性的调查

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526466

N. M. Chacko, S. Sam, P. G. J. Leelipushpam

引用次数: 17

Modified BTC algorithm for gray scale images using max-min quantizer 基于最大最小量化器的灰度图像改进BTC算法

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526440

Jayamol Mathews, Madhu S. Nair, Liza Jo

{"title":"Modified BTC algorithm for gray scale images using max-min quantizer","authors":"Jayamol Mathews, Madhu S. Nair, Liza Jo","doi":"10.1109/IMAC4S.2013.6526440","DOIUrl":"https://doi.org/10.1109/IMAC4S.2013.6526440","url":null,"abstract":"With the emerging multimedia technology, image data has been generated at high volume. It is thus important to reduce the image file sizes for storage and effective communication. Block Truncation Coding (BTC) is a lossy image compression technique which uses moment preserving quantization method for compressing digital gray level images. Even though this method retains the visual quality of the reconstructed image with good compression ratio, it shows some artifacts like staircase effect, raggedness, etc. near the edges. A set of advanced BTC variants reported in literature were studied and it was found that though the compression efficiency is good, the quality of the image has to be improved. A modified Block Truncation Coding using max-min quantizer (MBTC) is proposed in this paper to overcome the above mentioned drawbacks. In the conventional BTC, quantization is done based on the mean and standard deviation of the pixel values in each block. In the proposed method, instead of using the mean and standard deviation, an average value of the maximum, minimum and mean of the blocks of pixels is taken as the threshold for quantization. Experimental analysis shows an improvement in the visual quality of the reconstructed image by reducing the mean square error between the original and the reconstructed image. Since this method involves less number of simple computations, the time taken by this algorithm is also very less when compared with BTC.","PeriodicalId":403064,"journal":{"name":"2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116346578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 32

A jump patch-block match algorithm for multiple forgery detection 一种用于多重伪造检测的跳跃补丁块匹配算法

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526502

Ketan Bacchuwar, Aakashdeep, K. Ramakrishnan

引用次数: 25

Analysis of voltage collapse in the Kerala power grids using SVC, UPFC & SSSC 用SVC、UPFC和SSSC分析喀拉拉邦电网电压崩溃

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526409

A. Baby, J. Thomas, J. Tibin

引用次数: 3

Fuzzy processor based on VLSI — A review 基于VLSI的模糊处理器综述

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526411

M. Jothi, N. Balamurugan, R. Harikumar

引用次数: 1

Studies on merged Sagnac-Michelson interferometer for detecting phase sensitive events on fiber optic cables 用于检测光纤相敏事件的合并Sagnac-Michelson干涉仪的研究

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526388

B. Mohanan, Shaija P J, S. Varghese

引用次数: 4

Mobile controlled handoff by using dyanamic channel assignement 使用动态信道分配的移动控制切换

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526426

B. Kumar, G. Madhuri, M. Devadas, C. A. Kumar

{"title":"Mobile controlled handoff by using dyanamic channel assignement","authors":"B. Kumar, G. Madhuri, M. Devadas, C. A. Kumar","doi":"10.1109/IMAC4S.2013.6526426","DOIUrl":"https://doi.org/10.1109/IMAC4S.2013.6526426","url":null,"abstract":"In cellular networks, blocking occurs when a base station has no free channel to allocate to a mobile user. One distinguishes between two kinds of blocking, the first is called new call blocking and refers to blocking of new calls, and the second is called handoff blocking and refers to blocking of ongoing calls due to the mobility of the users. There are many methods of allocating a channel upon a new call arrival or handoff attempt. A good channel allocation is the one that yields high spectral efficiency for a specified grade of service (including link quality, probability of new call blocking, and the probability of forced terminations) and given degree of computational complexity It also keeps the planned cell boundaries intact, allocates a channel to MS quickly, maintains the best speech quality for the MS at any instant, and relives undesired network congestions. In this paper a simple and dynamic mobile controlled handoff based on quality of service is proposed which initiates a handoff procedure when RSS (Received signal strength) from serving BS falls below the threshold level. By using DCA (Dynamic Channel Assignment) info regarding the GOS (grade of services) and Quality of Service parameters at BS's whose RSS is greater than the serving BS is acquired by MS. By examine the parameters MS will choose the best BS to make a successful handoff with good voice quality. Forced terminations are generally perceived to severely degrade the quality of service. For this reason first priority of allocating channel is given to the handoff requests more readily then to new cell arrivals. This reduces the probability of forced termination at the expense of a (slight) increase in probability of new call blocking. These results are represented graphically in the paper.","PeriodicalId":403064,"journal":{"name":"2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128489989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Voltage and frequency control of wind hydro hybrid system in isolated locations using cage generators 笼形发电机在隔离场所的风-水混合系统的电压和频率控制

2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s) Pub Date : 2013-03-22 DOI: 10.1109/IMAC4S.2013.6526395

C. Sreekala, A. Mathew

{"title":"Voltage and frequency control of wind hydro hybrid system in isolated locations using cage generators","authors":"C. Sreekala, A. Mathew","doi":"10.1109/IMAC4S.2013.6526395","DOIUrl":"https://doi.org/10.1109/IMAC4S.2013.6526395","url":null,"abstract":"This paper presents a voltage and frequency control of wind-hydro hybrid system in isolated locations in which one squirrel cage induction generator (SCIG) driven by a variable speed wind turbine and another SCIG driven by a constant power hydro turbine feeding three phase four wire local loads. The system mainly uses a rectifier and a pulse width modulation controlled insulated-gate-bipolar-transistor-based voltage-source converters (VSCs) with a battery energy storage system at their dc link. The main objectives of the rectifier is to convert the ac power generated by the wind system to dc and the control algorithm for the VSC is the control of the magnitude and the frequency of the load voltage. This system has the capability of bidirectional active- and reactive-power flow, by which it controls the magnitude and the frequency of the load voltage. Here pitch angle control is used to achieve maximum power tracking(MPT). In this paper wind turbine, hydro turbine, MPT controller, and a voltage and frequency controller are modeled and simulated in MATLAB using Simulink and Sim Power System set toolboxes, and different aspects of the proposed system are studied for various types of loads, and under varying wind-speed conditions. The performance of the proposed system is presented to demonstrate its capability of MPT, voltage and frequency control (VFC), harmonic elimination, and load balancing.","PeriodicalId":403064,"journal":{"name":"2013 International Mutli-Conference on Automation, Computing, Communication, Control and Compressed Sensing (iMac4s)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130871429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5