2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA)最新文献_第10页

Bayesian scale space analysis of images 贝叶斯尺度空间图像分析

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703721

L. Pasanen, Lasse Holmström

引用次数: 2

A spatiotemporal attention operator for monitoring thermo-mechanical stress in wafer-scale integrated circuits using an infrared camera 利用红外相机监测晶圆级集成电路热机械应力的时空注意算子

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703733

A. Lakhssassi, Roman Palenychka, Michel Sayde, Y. Savaria, M. Zaremba, E. Kengne

{"title":"A spatiotemporal attention operator for monitoring thermo-mechanical stress in wafer-scale integrated circuits using an infrared camera","authors":"A. Lakhssassi, Roman Palenychka, Michel Sayde, Y. Savaria, M. Zaremba, E. Kengne","doi":"10.1109/ISPA.2013.6703733","DOIUrl":"https://doi.org/10.1109/ISPA.2013.6703733","url":null,"abstract":"An attentive vision method for thermal stress detection and monitoring using a multi-scale spatiotemporal attention operator is proposed for monitoring overheating in wafer-scale integrated circuits. This method represents a multi-scale and multi-temporal analysis of infrared image sequences of the inspected surfaces by an attention operator to detect feature points. Such points may indicate possible sources of abnormal thermo-mechanical stress and overheating. This operator implements linear aggregation of a temporal change filter with a corresponding spatial saliency filter using an optimized value of the temporal change coefficient to extract the multi-scale feature points. The monitoring is mostly carried out through the detection and tracking of stress-relevant feature points based on the multi-scale area spatial and temporal descriptors extracted at the feature points. The experiments conducted with infrared image sequences have confirmed the reliability of the proposed operator and showed its high potential in surface image analysis for monitoring of wafer-scale integrated circuits.","PeriodicalId":425029,"journal":{"name":"2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125307980","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

Wideband source localization by space-time MUSIC subspace estimation 基于空时MUSIC子空间估计的宽带源定位

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703762

E. D. D. Claudio, G. Jacovitti

{"title":"Wideband source localization by space-time MUSIC subspace estimation","authors":"E. D. D. Claudio, G. Jacovitti","doi":"10.1109/ISPA.2013.6703762","DOIUrl":"https://doi.org/10.1109/ISPA.2013.6703762","url":null,"abstract":"Accurate estimation of the direction of arrivals (DOAs) of multiple wideband signal sources by sensor arrays is of paramount importance in recent developments of Ultra-Wide Band (UWB) and MIMO communication systems, acoustic applications, ultrasound, beside classical radar and sonar sensing. The array model changes with frequency. Narrowband analysis is not suited for short duration and, more in general, non-stationary sources. Most existing wideband direction finding algorithms are based on sensor output channelization (frequency binning) and neglect correlations among frequency bins, intra-bin finite bandwidth effects and spectral leakage that may create ghost sources during signal subspace estimation and impair the consistency of DOA estimators at high signal to noise (SNR) ratios. In this paper, a minimum leakage MUSIC-based estimator of subband signal subspaces from the space-time array covariance is introduced. Resulting subspace estimates can be fed to any frequency domain Maximum Likelihood (ML), Weighted Subspace Fitting (WSF) or focusing algorithm for final DOA estimation. Realistic simulations demonstrate the superior performance of the new estimator in difficult environments.","PeriodicalId":425029,"journal":{"name":"2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123945862","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: 4

Nonlinear diffusion at your fingertips: Theory and mobile applications 非线性扩散在你的指尖:理论和移动应用

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703847

D. Thuerck, Arjan Kuijper

引用次数: 1

A frequency domain method for the carrier frequency offset estimation in OFDM systems OFDM系统中载波频偏估计的频域方法

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703761

A. Pelinkovic, S. Djukanović, I. Djurović, M. Simeunović

{"title":"A frequency domain method for the carrier frequency offset estimation in OFDM systems","authors":"A. Pelinkovic, S. Djukanović, I. Djurović, M. Simeunović","doi":"10.1109/ISPA.2013.6703761","DOIUrl":"https://doi.org/10.1109/ISPA.2013.6703761","url":null,"abstract":"The rapid growth and development of wireless data transmission brings new trends, challenges and constraints in the telecommunications field. Novel multicarrier techniques are proposed to meet these requirements. The orthogonal frequency division multiplexing (OFDM) is an attractive technique that achieves high data rate and high spectral efficiency and, at the same time, suppresses multipath fading in wireless communications. However, the OFDM is very sensitive to mobility of the transmitter, receiver or surrounding objects. The mobility produces interchannel interference which significantly deteriorates transmission performance. The interchannel interference suppression represent research challenge. Carrier frequency offset (CFO) estimation and its compensation represent a way to improve OFDM system's performance. In this paper, we consider CFO estimation in the frequency domain by using well known iterative algorithms for precise estimation of spectral peak's central peak frequency. Simulations show that the proposed method outperforms standard CFO estimation methods in terms of accuracy. In simulations, both AWGN channel and multipath channel are considered.","PeriodicalId":425029,"journal":{"name":"2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133827793","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: 6

Rotation invariant feature matching-based on Gaussian filtered log polar transform and phase correlation 基于高斯滤波对数极变换和相位相关的旋转不变特征匹配

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703723

A. Hast, Andrea Marchetti

引用次数: 16

An object-oriented simulator for 3D digital breast tomosynthesis system 面向对象的三维数字乳房断层合成系统仿真

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703750

S. Seyyedi, K. Cengiz, M. Kamasak, I. Yildirim

引用次数: 3

Discrete tomography on the triangular grid based on Ryser's results 基于Ryser结果的三角网格离散层析成像

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703846

B. Nagy, Elisa Valentina Moisi, V. Cretu

引用次数: 1

Automatic classification of defect page content in scanned document collections 扫描文档集合中缺陷页内容的自动分类

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703735

R. Huber-Mörk, Alexander Schindler

{"title":"Automatic classification of defect page content in scanned document collections","authors":"R. Huber-Mörk, Alexander Schindler","doi":"10.1109/ISPA.2013.6703735","DOIUrl":"https://doi.org/10.1109/ISPA.2013.6703735","url":null,"abstract":"We describe a method for defect detection and classification for collections of digital images of historical book documents. Undistorted text images from various books characterized by strong variation of language, font and layout properties are discriminated from typical errors in digitization processes such as occlusion by an operator's hand, visible book edge or image warping artifacts. A bag of local features approach is compared to a global characterization of location, size and orientation properties of detected keypoints. Machine learning is used to discriminate between those classes. Results for different features are compared for the task of discrimination between undistorted text and the major distortion class which is presence of the operator's hand, where features based on the bag of local features derived histograms achieved a cross-validation accuracy better than 99 percent on a representative data set. Taking into account up to three classes of distortions still resulted in cross-validation accuracies beyond 90 percent using bag of local features derived visual histograms for classifier input.","PeriodicalId":425029,"journal":{"name":"2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132037323","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: 3

Car recognition from frontal images in mobile environment 移动环境下基于正面图像的汽车识别

2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA) Pub Date : 2013-09-01 DOI: 10.1109/ISPA.2013.6703849

Viktor Varjas, A. Tanács

引用次数: 18