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14th International Conference on Image Analysis and Processing (ICIAP 2007)最新文献

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Automatic Detection of Facial Landmarks from AU-coded Expressive Facial Images 从au编码的表情图像中自动检测面部标志
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.30
Y. Gizatdinova, Veikko Surakka
{"title":"Automatic Detection of Facial Landmarks from AU-coded Expressive Facial Images","authors":"Y. Gizatdinova, Veikko Surakka","doi":"10.1109/ICIAP.2007.30","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.30","url":null,"abstract":"The present aim was to develop a fully automatic feature-based method for expression-invariant detection of facial landmarks from still facial images. It is a continuation of our earlier work where we found that some certain muscle contractions made a deteriorating effect on the feature-based landmark detection especially in the lower face. Taking into account this crucial facial behavior, we introduced improvements to the method that allowed facial landmarks to be fully automatically detected from expressive images of high complexity. In the method, information on local oriented edges was utilized to compose edge maps of the image at two levels of resolution. The landmark candidates resulted from this step were further verified by edge orientation matching. We used knowledge on face geometry to find the proper spatial arrangement of the candidates. The results obtained demonstrated a high overall performance of the method while testing a wide range official displays.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127630676","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: 17
Integrated Edge and Corner Detection 集成边缘和角检测
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.80
S. Coleman, B. Scotney, D. Kerr
{"title":"Integrated Edge and Corner Detection","authors":"S. Coleman, B. Scotney, D. Kerr","doi":"10.1109/ICIAP.2007.80","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.80","url":null,"abstract":"Corner detection is used in many computer vision applications that require fast and efficient feature matching. For tasks such as robot localisation and navigation, the use of corners for matching is preferred over edges or other, larger, features. In recent years finite-element based methods have been used to develop gradient operators for edge detection that have improved angular accuracy over standard techniques. We extend this work to corner detection, enabling edge and corner detection to be integrated. We demonstrate that accuracy is comparable to well-known existing corner detectors, and that significantly reduced computation time can be achieved, making the approach appropriate for real-time computer vision and robotics.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131839657","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: 8
Video Objects Segmentation by Robust Background Modeling 基于鲁棒背景建模的视频对象分割
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.133
Andrea Colombari, Andrea Fusiello, Vittorio Murino
{"title":"Video Objects Segmentation by Robust Background Modeling","authors":"Andrea Colombari, Andrea Fusiello, Vittorio Murino","doi":"10.1109/ICIAP.2007.133","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.133","url":null,"abstract":"This paper deals with the problem of segmenting a video shot into a background (still) mosaic and one or more foreground moving objects. The method is based on ego-motion compensation and background estimation. In order to be able to cope with sequences where occluding objects persist in the same position for a considerable portion of time, the papers concentrates on robust background estimation method. First the sequence is subdivided in patches that are clustered along the time-line in order to narrow down the number of background candidates. Then the background is grown incrementally by selecting at each step the best continuation of the current background, according to the principles of visual grouping. The method rests on sound principles in all its stages, and only few, intelligible parameters are needed. Experiments with real sequences illustrate the approach.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134332013","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: 16
Interval-Based Linear Hybrid Dynamical System for Modeling Cross-Media Timing Structures in Multimedia Signals 基于区间的线性混合动力系统在多媒体信号跨媒体时序结构建模中的应用
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.82
H. Kawashima, T. Matsuyama
{"title":"Interval-Based Linear Hybrid Dynamical System for Modeling Cross-Media Timing Structures in Multimedia Signals","authors":"H. Kawashima, T. Matsuyama","doi":"10.1109/ICIAP.2007.82","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.82","url":null,"abstract":"In this paper, we propose a computational scheme named an interval-based linear hybrid dynamical system (ILHDS) to represent complex dynamic events based on temporal intervals, each of which is characterized by linear dynamics and its duration. We then propose a cross-media timing-structure model to represent dynamic structures among multiple media signals based on the relation of temporal intervals described by multiple ILHDSs. To evaluate the proposed scheme, we conducted experiments on media conversion that generates lip video from an input audio signal.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133314996","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
Computation of Binary Objects Sides Number using Discrete Geometry, Application to Automatic Pebbles Shape Analysis 离散几何计算二元物体边数，在卵石形状自动分析中的应用
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.44
Tristan Roussillon, L. Tougne, Isabelle Sivignon
{"title":"Computation of Binary Objects Sides Number using Discrete Geometry, Application to Automatic Pebbles Shape Analysis","authors":"Tristan Roussillon, L. Tougne, Isabelle Sivignon","doi":"10.1109/ICIAP.2007.44","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.44","url":null,"abstract":"We are working in collaboration with geographers to study a set of pebbles digital images. Among the features geographers want to get automatically, pebble sides number is intuitively defined. It is merely computed after a thick polygonalisation of pebble contour. We propose an incremental and linear algorithm, free of restrictive hypothesis, which relies on previous works of Debled et al. (2006). We give some results on synthetical and real images.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126676961","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: 10
Becoming Visually Familiar 视觉熟悉
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.37
M. C. Santana, O. Déniz-Suárez, J. Lorenzo-Navarro, D. Hernández-Sosa
{"title":"Becoming Visually Familiar","authors":"M. C. Santana, O. Déniz-Suárez, J. Lorenzo-Navarro, D. Hernández-Sosa","doi":"10.1109/ICIAP.2007.37","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.37","url":null,"abstract":"Automatic face recognition has been mainly tackled by matching a new image to a set of previously computed identity models. The literature describes approximations where those identity models are based on a single sample or a set of them. However, face representation keeps being a topic of great debate in the psychology literature, with some results suggesting the use of an average image. In this paper, instead of restricting our system to a fixed and precomputed classifier, the system learns iteratively based on the experience extracted from each meeting. The experiments presented introduce the use of an exemplar average based approach. The results show similar performance to an approach based on the use of multiple exemplars per identity, but reducing storage and processing cost. The process is done autonomously, using an automatic face detection system that meets people, excepting the supervision provided by a human to confirm or correct each meeting classification suggested by the system.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116477447","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
Cooperative Object Tracking with Multiple PTZ Cameras 多PTZ相机协同目标跟踪
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.46
I. Everts, N. Sebe, Graeme A. Jones
{"title":"Cooperative Object Tracking with Multiple PTZ Cameras","authors":"I. Everts, N. Sebe, Graeme A. Jones","doi":"10.1109/ICIAP.2007.46","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.46","url":null,"abstract":"Research in visual surveillance systems is shifting from using few stationary, passive cameras to employing large heterogeneous sensor networks. One promising type of sensor in particular is the pan-tilt-zoom (PTZ) camera, which can cover a potentially much larger area than passive cameras, and can obtain much higher resolution imagery through zoom capacity. In this paper, a system that can track objects with multiple calibrated PTZ cameras in a cooperative fashion is presented. Tracking and calibration results are combined with several image processing techniques in a statistical segmentation framework, through which the cameras can hand over targets to each other. A prototype system is presented that operates in real time.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114707517","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: 69
Automatic extraction of LIDAR data classification rules 激光雷达数据分类规则的自动提取
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.31
P. Zingaretti, E. Frontoni, G. Forlani, C. Nardinocchi
{"title":"Automatic extraction of LIDAR data classification rules","authors":"P. Zingaretti, E. Frontoni, G. Forlani, C. Nardinocchi","doi":"10.1109/ICIAP.2007.31","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.31","url":null,"abstract":"LIDAR (Light Detection And Ranging) data are a primary data source for digital terrain model (DTM) generation and 3D city models. This paper presents an AdaBoost algorithm for the identification of rules for the classification of raw LIDAR data mainly as buildings, ground and vegetation. First raw data are filtered, interpolated over a grid and segmented. Then geometric and topological relationships among regions resulting from segmentation constitute the input to the tree-structured classification algorithm. Results obtained on data sets gathered over the town of Pavia (Italy) are compared with those obtained by a rule-based approach previously presented by the authors for the classification of the regions.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128819779","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: 13
Two-way interactive refinement of segmented medical volumes 分割医疗卷的双向交互细化
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.127
A. Signoroni, R. Leonardi
{"title":"Two-way interactive refinement of segmented medical volumes","authors":"A. Signoroni, R. Leonardi","doi":"10.1109/ICIAP.2007.127","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.127","url":null,"abstract":"For complex medical image segmentation tasks which also require high accuracy, prior information must usually be generated in order to initialize and confine the action of the computational tools. This can be obtained by task oriented specialization layers operating within automatic segmentation techniques or by advanced exploitation of user- data interaction, in this case the segmentation technique can conserve generality and results can be inherently validated by the user itself, in the measure he is allowed to effectively steer the process towards the desired result. In this paper we present a highly accurate and still general morphological 3D segmentation system where rapid convergence to the desired result is guaranteed by a two-way interactive segmentation-refinement loop, where the flow of prior information is inverted (from computing tools to the user) in the refinement phase in order to help the user to quickly select most effective refinement strategies.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124747888","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
Transformation invariant SOM clustering in Document Image Analysis 变换不变SOM聚类在文档图像分析中的应用
14th International Conference on Image Analysis and Processing (ICIAP 2007) Pub Date : 2007-09-10 DOI: 10.1109/ICIAP.2007.126
S. Marinai, E. Marino, G. Soda
{"title":"Transformation invariant SOM clustering in Document Image Analysis","authors":"S. Marinai, E. Marino, G. Soda","doi":"10.1109/ICIAP.2007.126","DOIUrl":"https://doi.org/10.1109/ICIAP.2007.126","url":null,"abstract":"In this paper, we propose the combination of the self organizing map (SOM) and of the tangent distance for effective clustering in document image analysis. The proposed model (SOM_TD) is used for character and layout clustering, with applications to word retrieval and to page classification. By using the tangent distance it is possible to improve the SOM clustering so as to be more tolerant with respect to small local transformations of the input patterns.","PeriodicalId":118466,"journal":{"name":"14th International Conference on Image Analysis and Processing (ICIAP 2007)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117213382","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
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