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

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Temporal analysis for land mine detection 用于地雷探测的时间分析
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.2005.195443
A. Linderhead, S. Sjokvist, S. Nyberg, M. Uppsall, C. Gronwall, P. Andersson, D. Letalick
{"title":"Temporal analysis for land mine detection","authors":"A. Linderhead, S. Sjokvist, S. Nyberg, M. Uppsall, C. Gronwall, P. Andersson, D. Letalick","doi":"10.1109/ISPA.2005.195443","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195443","url":null,"abstract":"In this paper the FOI temporal analysis method is presented and tested on images randomly chosen from a diurnal sequence. The method integrates data collection, both sensor images and weather, as well as modelling, with the signal processing detection methods. The detection methods presented show that mines can be detected using optical methods, even when the image sequence show very little contrast. Increasing the number of data collection times affects the detection rate and false alarm rate in a positive way. The result from the test with randomly chosen images show performance better than random for all of the tested cases, excellent for some cases. Using prior knowledge in the choice of time of data collection, the result from testing the method on real mine field data shows interesting result.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"55 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":"114740853","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
Multi-scale surface representation of point-sampled geometry 点采样几何的多尺度表面表示
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.2005.195440
Zhang Dian-hua, Yue Tian, Chen Yong-hui
{"title":"Multi-scale surface representation of point-sampled geometry","authors":"Zhang Dian-hua, Yue Tian, Chen Yong-hui","doi":"10.1109/ISPA.2005.195440","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195440","url":null,"abstract":"With increasing complexity of 3D geometric models and growing demand for advanced modeling functionality, significant effort is being devoted to the design of efficient, reliable, and scalable algorithms for digital geometry processing. We introduce a multi-scale surface representation that enables sophisticated editing functionality at different approximation levels, using the concept of scale-space. The key issue is the interconnection between successive levels in the hierarchy. We use a fairing operator-a geometric low-pass filter to generate successively smoother approximation levels of a given input surface, and use a decomposition operator to encode each level relative to the next smoother level using normal displacements to ensure intuitive detail preservation. As a result, users can edit the surface at different approximation levels to perform coarse-scale edits on the whole model as well as very localized modifications on the surface detail.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"132 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":"117132870","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
Image registration in stereo-based multi-modal imaging systems 基于立体的多模态成像系统中的图像配准
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.2005.195386
M. Hild, G. Umeda
{"title":"Image registration in stereo-based multi-modal imaging systems","authors":"M. Hild, G. Umeda","doi":"10.1109/ISPA.2005.195386","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195386","url":null,"abstract":"This paper describes an imaging system for the acquisition of physically disparate images, such as visible and infrared wavelength range images, together with an image registration algorithm. The algorithm makes use of 3D scene data obtained from stereo and integrates local and global registration methods in order to obtain registrations that have good positional accuracy and dense, gap-less image regions. The registration result has the resolution of the image with the highest resolution. Experimental results with a color CCD camera and a far-infrared thermal imager indicated that the proposed method is effective and accurate.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"3 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":"127394681","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
Wipe transition detection based on motion activity and dominant colours descriptors 基于运动活动和主色描述符的擦除过渡检测
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.2005.195459
S. Mackowiak, M. Relewicz
{"title":"Wipe transition detection based on motion activity and dominant colours descriptors","authors":"S. Mackowiak, M. Relewicz","doi":"10.1109/ISPA.2005.195459","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195459","url":null,"abstract":"Future image and video sequence encoders will be able to use the metadata information in order to improve their efficiency or introduce a new technique of error masking in a video decoder. The paper presents a wipe transition detection algorithm based on two video descriptors: motion activity and dominant colour. The information about transition could be useful in encoder in order to optimize their encoding strategy.","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":"123121114","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
Automated gesturing for virtual characters: speech-driven and text-driven approaches 虚拟角色的自动手势:语音驱动和文本驱动的方法
ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.4304/jmm.1.1.62-68
G. Zoric, K. Smid, I. Pandzic
{"title":"Automated gesturing for virtual characters: speech-driven and text-driven approaches","authors":"G. Zoric, K. Smid, I. Pandzic","doi":"10.4304/jmm.1.1.62-68","DOIUrl":"https://doi.org/10.4304/jmm.1.1.62-68","url":null,"abstract":"We present two methods for automatic facial gesturing of graphically embodied animated agents. In one case, conversational agent is driven by speech in automatic lip sync process. By analyzing speech input, lip movements are determined from the speech signal. Another method provides virtual speaker capable of reading plain English text and rendering it in a form of speech accompanied by the appropriate facial gestures. Proposed statistical model for generating virtual speaker's facial gestures can be also applied as addition to lip synchronization process in order to obtain speech driven facial gesturing. In this case statistical model is triggered with the input speech prosody instead of lexical analysis of the input text.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"2 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":"130982435","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
A new approach to improving fractal image compression times 一种提高分形图像压缩次数的新方法
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.2005.195457
T. Zumbakis, J. Valantinas
{"title":"A new approach to improving fractal image compression times","authors":"T. Zumbakis, J. Valantinas","doi":"10.1109/ISPA.2005.195457","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195457","url":null,"abstract":"The paper presents a new approach to improving fractal image compression times. The range blocks and corresponding domain blocks are categorized in accordance with their smoothness level. The searching is carried out between the same (or, neighbouring) smoothness classes for range-domain comparisons which significantly reduces the computational complexity. Theoretical and experimental results show that extremely high compression time savings are achieved for images of size 512/spl times/512.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"30 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":"126538470","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
Face recognition using 3D local geometrical features: PCA vs. SVM 基于三维局部几何特征的人脸识别:PCA vs. SVM
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.2005.195407
A. B. Moreno, A. Sanchez, José Fco. Vélez, Javier Díaz
{"title":"Face recognition using 3D local geometrical features: PCA vs. SVM","authors":"A. B. Moreno, A. Sanchez, José Fco. Vélez, Javier Díaz","doi":"10.1109/ISPA.2005.195407","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195407","url":null,"abstract":"Thirty local geometrical features extracted from 3D hitman face surfaces have been used to model the face for face recognition. They are the most discriminating ones selected from a set of 86. We have experimented with 420 3D-facial meshes (without texture) of 60 individuals. There are 7 images per subject including views presenting fight rotations and facial expressions. The HK algorithm, based in the signs of the mean and Gaussian curvatures, has been used for region segmentation. Experiments under controlled and non-controlled acquisition conditions, considering pose variations and facial expressions, have been achieved to analyze the robustness of the selected characteristics. Success recognition results of 82.0% and 90.16% were obtained when the images are frontal views with neutral expression using PCA and SVM, respectively. The recognition rates only decrease to 76.2% and 77.9% using PCA and SVM matching schemes respectively, under gesture and light face rotation.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"59 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":"130009162","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: 79
3D statistical facial reconstruction 三维统计面部重建
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.2005.195439
Maxime Bérar, Michel Desvignes, G. Bailly, Y. Payan
{"title":"3D statistical facial reconstruction","authors":"Maxime Bérar, Michel Desvignes, G. Bailly, Y. Payan","doi":"10.1109/ISPA.2005.195439","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195439","url":null,"abstract":"The aim of craniofacial reconstruction is to produce a likeness of a face from the skull. Few works in computerized assisted facial reconstruction have been done in the past, due to poor machine performances and data availability, and major works are manual reconstructions. In this paper, we present an approach to build 3D statistical models of the skull and the face with soft tissues from 3D CT scans. This statistical model is used by our reconstruction method to produce 3D soft tissues from the skull of one individual. Results on real data are presented and are promising.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"62 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":"131152199","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: 21
A novel approach for designing cosine-modulated transceivers 余弦调制收发器设计的新方法
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.2005.195401
P. Martín-Martín, F. Cruz-Roldán, T. Saramäki
{"title":"A novel approach for designing cosine-modulated transceivers","authors":"P. Martín-Martín, F. Cruz-Roldán, T. Saramäki","doi":"10.1109/ISPA.2005.195401","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195401","url":null,"abstract":"This paper introduces a novel approach for designing critically sampled cosine-modulated transceivers (CMTs) for communications applications. The key idea in this approach is to design the prototype filter in such a manner that it provides a properly optimized tradeoff between the inter-symbol and inter-channel interferences for CMTs without directly concentrating on designing the prototype filter according to any predetermined criteria. In order to generate a very fast technique for testing this approach, the windowing technique is used for optimizing the prototype filter and the window function is a generalized Blackman window in the sense that this window function has the fourth additional term. Using this windowing approach results in a very fast unconstrained optimization problem with only three unknowns involved for optimally determining the above-mentioned tradeoff for a CMT, independently of the order of the prototype filter and the number of channel of the CMT. Several exampled are included showing that CMTs with very good properties can be achieved very quickly by using the proposed technique.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"205 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":"116151615","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
Modified linear phase frequency response masking FIR filter 改进的线性相位频率响应掩蔽FIR滤波器
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.2005.195451
J. Rodrigues, K. R. Pai
{"title":"Modified linear phase frequency response masking FIR filter","authors":"J. Rodrigues, K. R. Pai","doi":"10.1109/ISPA.2005.195451","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195451","url":null,"abstract":"This paper proposes a modified frequency response masking (FRM) technique for the synthesis of linear phase, sharp transition, low arithmetic complexity FlR filter. The structure is composed of lowpass and bandpass subfilters which are designed as linear phase, equiripple passband and computationally efficient FIR filters. The frequency response of the subfilters are modeled using trigonometric functions of frequency and the design yields closed form expressions for the impulse response coefficients of the subfilters. The slopes at the edges of the transition region of the subfilter are matched which makes the frequency response a continuous function of frequency and hence reduces the effects due to Gibb's phenomenon thereby reducing passband edge ripple of the subfilters. The bandpass filter eliminates one masking filter and a model filter from the basic FRM approach thereby simplifying the synthesis of the proposed modified FRM FIR filter.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"63 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":"122897414","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: 21
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