ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.最新文献_第7页

A systematic algorithm for designing multiplierless computationally efficient recursive decimators and interpolators 设计无乘法器的高效递归抽取器和插值器的系统算法

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195404

J. Yli-Kaakinen, T. Saramaki

{"title":"A systematic algorithm for designing multiplierless computationally efficient recursive decimators and interpolators","authors":"J. Yli-Kaakinen, T. Saramaki","doi":"10.1109/ISPA.2005.195404","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195404","url":null,"abstract":"It has been shown by Renfors and Saramaki that if the phase linearity is not required, then the single-stage and multistage decimators and interpolators based on the use of the so-called recursive Nth-band filters provide the lowest computational complexities among the existing decimators and interpolators. This paper describes an efficient algorithm for designing these decimators and interpolators for both the single-stage and multistage implementations in such a way that the resulting filters become multiplierless with short coefficient wordlength. For single-stage filters, the coefficient optimization is performed in two steps. First, a nonlinear optimization algorithm is used for determining a parameter space of the infinite-precision coefficients including the feasible space, where the filter meets the given criteria. The second step involves finding the filter parameters in this space so that the resulting filter meets the given criteria with the simplest coefficient representation forms. For multistage decimators and interpolators, these two steps are performed independently for each filter stage by properly sharing their attenuation responsibilities. This considerably reduces the overall optimization time. An example is included in order to illustrate the benefits of the proposed synthesis scheme.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159255","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: 9

On using likelihood-adjusted proposals in particle filtering: local importance sampling 在粒子滤波中的似然调整建议:局部重要抽样

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195384

P. Torma, Csaba Szepesvari

引用次数: 13

Automated coronary calcification detection and scoring 自动冠状动脉钙化检测和评分

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195396

I. Išgum, B. van Ginneken, A. Rutten, M. Prokop

引用次数: 4

Computer-aided shape analysis and classification of weld defects in industrial radiography based invariant attributes and neural networks 基于不变属性和神经网络的工业射线照相焊缝缺陷计算机辅助形状分析与分类

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195389

Nafaa Nacereddine, M. Tridi

{"title":"Computer-aided shape analysis and classification of weld defects in industrial radiography based invariant attributes and neural networks","authors":"Nafaa Nacereddine, M. Tridi","doi":"10.1109/ISPA.2005.195389","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195389","url":null,"abstract":"The interpretation of possible weld discontinuities in industrial radiography is ensured by human interpreters. Consequently, it is submitted to subjective considerations such as the aptitude and the experiment of the interpreter, in addition of the poor quality of radiographic images, due essentially to the exposure conditions. These considerations make the weld quality interpretation inconsistent, labor intensive and sometimes biased. It is thus desirable to develop computer-aided techniques to assist the interpreter in evaluating the quality of the welded joints. For the characterization of the weld defect region, looking for features which are invariant regarding the usual geometric transformations proves to be necessary because the same defect can be seen from several angles according to the orientation and the distance from the welded framework to the radiation source. Thus, a set of invariant geometrical attributes which characterize the defect shape is proposed. The principal component analysis technique is used in order to reduce the number of attribute variables in the aim to give better performance for defect classification. Thereafter, an artificial neural network for weld defect classification was used. The proposed classification consists in assigning the principal types of weld defects to four categories according to the morphological characteristics of the defects usually met in practice.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125344120","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: 37

A multimodal image registration technique for structured polygonal scenes 结构化多边形场景的多模态图像配准技术

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195463

Sinisa Segvic

引用次数: 4

Small target detection using center-surround difference with locally adaptive threshold 基于中心-环绕差和局部自适应阈值的小目标检测

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195445

Sun-Gu Sun, Dong-Min Kwak, Wonkap Jang, Do-Jong Kim

{"title":"Small target detection using center-surround difference with locally adaptive threshold","authors":"Sun-Gu Sun, Dong-Min Kwak, Wonkap Jang, Do-Jong Kim","doi":"10.1109/ISPA.2005.195445","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195445","url":null,"abstract":"A target detection method from low contrast forward looking infrared (FLIR) images is proposed. It is known that detecting small targets in remotely sensed image is difficult and challenging work. The goal is to identify target areas with small number of false alarms in a thermal infrared scene of battlefield. The proposed method consists of following three stages. First, center-surround difference with local adaptive threshold is proposed in order to find salient areas in an input image. Second, local thresholding is proposed to the local region of interest (ROf) based on the result of first step. The second step is needed to segment target silhouettes precisely. Third, the extracted binary target silhouettes are compared with target template using size and affinity to remove clutters. In the experiments, many natural infrared images with high variability are used to prove performance the proposed method. It is compared with a morphological method using receiver operating characteristic (ROC) curve and execution time. The result shows that our method is superior to the morphological method and it can be applied to automatic target recognition (ATR) system.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132739129","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: 24

Data reduction for particle filters 粒子过滤器的数据约简

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195383

C. Musso, N. Oudjane

引用次数: 2

Evaluation of segmentation quality for the geometrical active contour method 几何活动轮廓法分割质量评价

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195441

F. Derraz, A. Taleb-Ahmed, M. Beladgham, M. Khelif

引用次数: 4

Picture histogram and interpretation of digital orthophotos in forest management 森林管理中数字正射影像图的直方图和解译

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195444

D. Klobucar, R. Pernar

引用次数: 2

Multiple interacting targets tracking with application to team sports 多个相互作用的目标跟踪与团队运动的应用

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195431

M. Kristan, Matej Perse, S. Kovacic, M. Bon

引用次数: 27