2012 16th Panhellenic Conference on Informatics最新文献_第5页

Parallel Job Scheduling on a Dynamic Cloud Model with Variable Workload and Active Balancing 动态云模型中可变负载和主动平衡的并行作业调度

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.16

Ioannis A. Moschakis, H. Karatza

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引用次数: 9

Robust Line Detection in Images of Building Facades using Region-based Weighted Hough Transform 基于区域加权霍夫变换的建筑立面图像鲁棒线检测

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.88

T. Tsenoglou, N. Vassilas, D. Ghazanfarpour

{"title":"Robust Line Detection in Images of Building Facades using Region-based Weighted Hough Transform","authors":"T. Tsenoglou, N. Vassilas, D. Ghazanfarpour","doi":"10.1109/PCi.2012.88","DOIUrl":"https://doi.org/10.1109/PCi.2012.88","url":null,"abstract":"A robust region-based weighted Hough Transform method for the detection of straight lines in poor quality images of building facades is presented in this work. Following a typical preprocessing stage that includes color to grayscale transformation, binarization using Otsu's automatic threshold selection method, morphological opening and decomposition into connected regions a minimum bounding rectangle is then fitted to each region. A measure of rectangularity is then used in order to filter out regions with low rectangularity scores from further processing. Finally, the contribution of each region to the accumulator array is computed using an appropriately designed kernel that models the uncertainties associated with the geometrical center and orientation of the region's minimum bounding rectangle. Comparisons performed on facade images taken with impaired visual conditions or with low accuracy sensors (e.g. thermal images) between the proposed method and other Hough Transform algorithms, show an improved accuracy of our method in detecting lines and/or linear formations. The proposed method is also used with success for image rectification through vanishing points estimation.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128787785","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

Acceleration of Image Processing Algorithms Using Minimal Resources of Custom Reconfigurable Hardware 利用自定义可重构硬件的最小资源加速图像处理算法

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCI.2012.11

J. Vourvoulakis, J. Lygouras, J. Kalomiros

{"title":"Acceleration of Image Processing Algorithms Using Minimal Resources of Custom Reconfigurable Hardware","authors":"J. Vourvoulakis, J. Lygouras, J. Kalomiros","doi":"10.1109/PCI.2012.11","DOIUrl":"https://doi.org/10.1109/PCI.2012.11","url":null,"abstract":"The hardware/software implementation of a custom vision board using minimal resources out of a reconfigurable platform is described. Demanding robotic vision applications in most cases require dedicated hardware for reliable operation. The designed system is based on a Cyclone IV Altera FPGA device that constitutes the main processing unit of the reconfigurable hardware and on a 32 -- bit Microchip PIC32 micro controller as a complementary processor. The main goal of this research is to accelerate image processing algorithms using only minimal resources of the custom designed reconfigurable hardware. The micro controller serves peripheral control tasks, relieving valuable resources from the FPGA device. Video images are captured using a CMOS image sensor. USB connectivity with a personal computer is provided using a FIFO-to-USB module. Operational tasks such as frame grabbing, image filtering and USB communication are integrated to the system by implementing custom-designed controllers in VHDL. Image processing functions are accelerated using a fully parallel pipeline which is described analytically. A host computer interface has also been developed in order to test the overall system in action. The system is evaluated in terms of resource usage and the advantages emanating from the proposed architecture are discussed.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127530108","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

Co-authorship Networks in Academic Research Communities: The Role of Network Strength 学术研究团体中的合著者网络:网络强度的作用

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.47

A. Tsolakidis, C. Sgouropoulou, Effie Papageorgiou, O. Terraz, G. Miaoulis

引用次数: 4

An Adaptive Video Transmission Algorithm to Improve Quality of Experience over LTE Access Networks 一种提高LTE接入网络体验质量的自适应视频传输算法

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.82

D. J. Vergados, A. Michalas, Aggeliki Sgora, D. Vergados

引用次数: 2

An Ontology-Based Approach in Learning Programming Languages 基于本体的编程语言学习方法

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.78

C. Pierrakeas, Georgia D. Solomou, A. Kameas

引用次数: 13

A Fuzzy Cognitive Map for Identifying User Satisfaction from Smartphones 识别智能手机用户满意度的模糊认知图

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.21

V. Gerogiannis, S. Papadopoulou, E. Papageorgiou

引用次数: 4

WDM Switching Module Based on Active Microring Resonators: Applications to Metro Networks 基于有源微环谐振器的WDM交换模块:在城域网络中的应用

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.79

H. Simos, A. Bogris, N. Raptis, D. Syvridis

引用次数: 0

Design of a Tactile Display Based on a High Power CMUT Array 基于大功率CMUT阵列的触觉显示器设计

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.61

Vasilios G. Chouvardas, A. Miliou, Miltiadis N. Hatalis

引用次数: 0

An Empirical Investigation of the Effect of Hard and Soft ICT Investment on Innovation Activity of Greek Firms 信息通信技术软硬投资对希腊企业创新活动影响的实证研究

2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.74

E. Loukis, Spyros Arvanitis, Vasiliki Diamantopoulou

引用次数: 0