2014 9th International Conference on Computer Engineering & Systems (ICCES)最新文献_第6页

Modeling and simulation of SMA actuator wire SMA致动器导线的建模与仿真

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030993

W. G. Ali Abdelaal, Gihan Nagib

引用次数: 9

A fragile watermarking authentication schema based on Chaotic maps and fuzzy cmeans clustering technique 一种基于混沌映射和模糊均值聚类技术的脆弱水印认证方案

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030967

K. Hamouda, Mohammed M Elmogy, B. El-Desouky

{"title":"A fragile watermarking authentication schema based on Chaotic maps and fuzzy cmeans clustering technique","authors":"K. Hamouda, Mohammed M Elmogy, B. El-Desouky","doi":"10.1109/ICCES.2014.7030967","DOIUrl":"https://doi.org/10.1109/ICCES.2014.7030967","url":null,"abstract":"In contemporary years, different watermarking schemes are proposed for image authentication and copyright protection. In this paper, a novel watermarking authentication technique based on Chaos and Fuzzy C-Means clustering is proposed for images of different sizes. Tamper localization and detection accuracy are two important aspects of the authentication watermarking schemes. The proposed hybrid technique is used to improve the tamper localization, detection accuracy, and security of the watermarking system. Fuzzy C-Means clustering technique creates the relationship between image blocks to improve the tamper localization and detection accuracy. It also makes the watermark dependent on the plain image to improve the security of the watermarking system. Chaotic maps are sensitive to initial values, so watermark cannot be established without the same initial values. Then, it gives high security to the proposed watermarking scheme. The proposed scheme not deals with square or even sized images, but it can deals with any images with different sizes. Experimental results show that the proposed scheme is checked through a series of attacks and achieve superior tamper detection and localization accuracy under different attacks.","PeriodicalId":339697,"journal":{"name":"2014 9th International Conference on Computer Engineering & Systems (ICCES)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134594595","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: 2

FPGA implementation and performance evaluation of a simultaneous multithreaded matrix processor 并行多线程矩阵处理器的FPGA实现与性能评价

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030959

M. Soliman, E. Elsayed

{"title":"FPGA implementation and performance evaluation of a simultaneous multithreaded matrix processor","authors":"M. Soliman, E. Elsayed","doi":"10.1109/ICCES.2014.7030959","DOIUrl":"https://doi.org/10.1109/ICCES.2014.7030959","url":null,"abstract":"This paper proposes a simultaneous multithreaded matrix processor called SMMP to improve the performance of data-parallel applications by exploiting ILP, DLP, and TLP. In SMMP, the well-known 5-stage pipeline (baseline scalar processor) is extended to execute multi-scalar/vector/matrix instructions on unified parallel execution datapaths. SMMP can issue four scalar instructions from two threads each cycle or four vector/matrix operations from one thread, where the execution of vector/matrix instructions in threads is done in round-robin fashion. Moreover, this paper presents the implementation of our proposed SMMP using VHDL targeting FPGA Virtex-6. In addition, the performance of SMMP is evaluated on some kernels from the basic linear algebra subprograms (BLAS). Our results show that, the hardware complexity of SMMP is 5.68 times higher than the baseline scalar processor. However, speedups of 4.9, 6.09, 6.98, 8.2, 8.25, 8.72, 9.36, 11.84, and 21.57 are achieved on BLAS kernels of applying Givens rotation, scalar times vector plus another, vector addition, vector scaling, setting up Givens rotation, dot-product, matrix-vector multiplication, Euclidean length, and matrix-matrix multiplications, respectively. In conclusion, the average speedup over the baseline is 9.55 and the average speedup over complexity is 1.68.","PeriodicalId":339697,"journal":{"name":"2014 9th International Conference on Computer Engineering & Systems (ICCES)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132339064","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: 0

Neural gas based 3D normal mesh compression 基于神经气体的3D法向网格压缩

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030927

Shymaa EL-Leithy

引用次数: 0

Mathematical analyses of matched spectrum interference signal on post-correlation C/N0 for the GPS receivers GPS接收机后相关C/N0匹配频谱干扰信号的数学分析

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030941

M. K. Bek, E. Shaheen, S. Elgamel

引用次数: 1

DPM: Fast and scalable clustering algorithm for large scale high dimensional datasets DPM:用于大规模高维数据集的快速可扩展聚类算法

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030932

Tamer F. Ghanem, W. Elkilani, Hatem S. Ahmed, M. Hadhoud

引用次数: 1

A novel algorithm for synchronizing audio and video streams in MPEG-2 system layer 一种新的MPEG-2系统层音频和视频流同步算法

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030945

Shereen M. Mosharafa, G. A. Ebrahim, A. Zekry

{"title":"A novel algorithm for synchronizing audio and video streams in MPEG-2 system layer","authors":"Shereen M. Mosharafa, G. A. Ebrahim, A. Zekry","doi":"10.1109/ICCES.2014.7030945","DOIUrl":"https://doi.org/10.1109/ICCES.2014.7030945","url":null,"abstract":"Audio-video synchronization is a very common quality issue that has a direct effect on the end-user's experience. Audio and video streams are supposed to be synchronized at the transmitter. However, they might be received out of synchronization. In general, loss of synchronization between audio and video streams may be attributed to several factors such as incorrect time-stamping at the transmitter, frame loss, and the different delays introduced by the signal processing and post-processing functions on each stream. Unfortunately, the video pipeline is much complicated as compared with the audio pipeline. Hence, during the journey of the streams from the transmitter to the presentation unit at the receiver, they may be susceptible to different processing delays. These different delays can make the two streams finally presented out of phase. Different algorithms were developed for preserving synchronization at the receiver side in order to provide the best possible perceptual quality. However, most of these algorithms rely on the encoded data of the bit streams. Hence, this paper introduces a new audio-video synchronization algorithm that exploits some features in MPEG-2 system layer. It addresses the misalignment of audio and video streams occurred due to the different processing and post-processing delays. The proposed algorithm relies on both the system clock reference and the relative alignment between the audio and video streams.","PeriodicalId":339697,"journal":{"name":"2014 9th International Conference on Computer Engineering & Systems (ICCES)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216413","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: 0

An efficient multiplexing approach for MPEG-2 transport stream encoder 一种高效的MPEG-2传输流编码器复用方法

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030988

Shereen M. Mosharafa, G. A. Ebrahim, A. Zekry

{"title":"An efficient multiplexing approach for MPEG-2 transport stream encoder","authors":"Shereen M. Mosharafa, G. A. Ebrahim, A. Zekry","doi":"10.1109/ICCES.2014.7030988","DOIUrl":"https://doi.org/10.1109/ICCES.2014.7030988","url":null,"abstract":"This paper introduces an approach that adopts a two-stage multiplexing strategy for MPEG-2 transport stream encoder. The first stage in the proposed approach is responsible for multiplexing the elementary streams while the second stage is responsible for multiplexing the program streams. The function of the first stage is to form a single program transport stream from the elementary streams. It is designed to facilitate synchronization between elementary streams at the receiver. In other words, the transmission of elementary streams is time-interleaved according to the relative presentation time represented by each packet from each stream. On the other hand, the second stage is utilized to multiplex program streams to form a transport stream that conforms to MPEG-2 T-STD buffer requirements. The proposed approach reduces the real-time overhead compared with the other related approaches. Mainly, because other approaches make the multiplexing decision at the transmission time while the proposed approach takes this decision in advance. Hence, it reduces the associated overhead at the transmission time. A prototype of the proposed approach has been implemented in VHDL to evaluate its performance. Additionally, it has proven its effectiveness while testing it with H.264 and AAC codecs that are supported by digital video broadcasting systems.","PeriodicalId":339697,"journal":{"name":"2014 9th International Conference on Computer Engineering & Systems (ICCES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121279549","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: 0

A distributed genetic algorithm for swarm robots obstacle avoidance 群机器人避障的分布式遗传算法

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030951

Nesma M. Rezk, Y. Alkabani, H.S. Bedor, S. Hammad

引用次数: 8

Pedestrian detection using shape context and PHOG 基于形状上下文和PHOG的行人检测

2014 9th International Conference on Computer Engineering & Systems (ICCES) Pub Date : 2014-12-01 DOI: 10.1109/ICCES.2014.7030972

Shymaa Saad, M. S. Yasein, M. Mousa, H. Nassar

引用次数: 1