3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the最新文献_第3页

V/HS structure for transforms and their fast algorithms 变换的V/HS结构及其快速算法

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296945

Y. Katiyi, L. Yaroslavsky

引用次数: 3

A family of triangular grids in digital geometry 数字几何中的一组三角形网格

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296876

B. Nagy

引用次数: 27

Automatic tracking of particles in dynamic fluorescence microscopy 动态荧光显微镜中粒子的自动跟踪

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296963

Daniel Sage, F. Hediger, Susan M. Gasser, M. Unser

{"title":"Automatic tracking of particles in dynamic fluorescence microscopy","authors":"Daniel Sage, F. Hediger, Susan M. Gasser, M. Unser","doi":"10.1109/ISPA.2003.1296963","DOIUrl":"https://doi.org/10.1109/ISPA.2003.1296963","url":null,"abstract":"We present a new, robust algorithm for tracking fluorescent particles in dynamic image sequences obtained by brightfield or confocal microscopy. Specifically, we consider the problem of extracting the movement of chromosomal telomeres within the nucleus of a budding yeast cell. Our method has three components. The first is an alignment module that compensates for the movement of the biological structure under investigation. In our application, the images are aligned to the center of gravity of the nucleus which is detected by thresholding and fitted with an ellipse. The second step is a Mexican-hat filtering which we show to be optimally tailored to the detection of a Gaussian-like spot in fractal noise. The final component is a tracking algorithm that uses dynamic programming to extract the optimal (x,y,t) trajectory of a particle. We have implemented the method as a Java Plugin for the public-domain ImageJ software. We have applied it to real data and have obtained results that are as good - if not better as manual tracings. Our new algorithm reduces the analysis time of a 300 image sequence from 10 minutes, when it is done manually, to just a few seconds and offers the benefit of reproducibility.","PeriodicalId":218932,"journal":{"name":"3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115924258","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

Densitometric measurements in coronarographic images for blood flow estimation 血流估计用冠状造影图像中的密度测量

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296371

H. Goszczynska, P. Bogorodzki, T. Wolak, R. Kurjata, M. Orzechowski

引用次数: 0

A windowing approach for designing critically sampled nearly perfect-reconstruction cosine-modulated transmultiplexers and filter banks 设计临界采样近完美重构余弦调制多路复用器和滤波器组的开窗方法

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296377

P. Martin, F. Cruz-Roldán, T. Saramaki

{"title":"A windowing approach for designing critically sampled nearly perfect-reconstruction cosine-modulated transmultiplexers and filter banks","authors":"P. Martin, F. Cruz-Roldán, T. Saramaki","doi":"10.1109/ISPA.2003.1296377","DOIUrl":"https://doi.org/10.1109/ISPA.2003.1296377","url":null,"abstract":"A very fast technique for designing nearly perfect-reconstruction (NPR) critically sampled cosine-modulated M-channel transmultiplexer (TMUX) and filter bank (FB) systems is proposed. This technique is based on using the windowing technique for designing the prototype filter so that its 3-dB cutoff frequency is located at /spl omega/=/spl pi//(2M). The motivation for this is the observation that if the prototype filter cascaded with itself is a 2Mth filter, then the resulting TMUX (in the case of an ideal channel being a pure delay) or FB system has approximately a perfect-reconstruction (PR) property. This implies that for this cascade the 6-dB cutoff point should be approximately located at /spl omega/=/spl pi//(2M), and, correspondingly, the 3-dB cutoff frequency of the prototype filter is located at this angular frequency. The main advantage of the proposed design scheme is that it significantly lowers the computational complexity when compared with other existing techniques proposed for designing critically sampled cosine-modulated TMUX or FB systems. The PR property is not achieved, but for the resulting TMUX (FB) systems, the intersymbol interference and crosstalk errors (the amplitude and alias errors) are small. Both of these errors are small enough in practical systems. Several examples are included illustrating these desired properties.","PeriodicalId":218932,"journal":{"name":"3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134059767","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

Jointly optimized error-feedback and realization for roundoff noise minimization in state-space digital filters 联合优化了状态空间数字滤波器中舍入噪声最小化的误差反馈与实现

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296868

Wu-Sheng Lu, T. Hinamoto

引用次数: 1

Question answering on large news video archive 大型新闻视频档案问答

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296910

Tat-Seng Chua

引用次数: 4

Exploitation of the HVS features for the enhancement of image watermarking techniques 利用HVS特征增强图像水印技术

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296460

H. Trichili, M. Bouhlel, B. Solaiman, L. Kamoun

引用次数: 4

Nonlinear identifiability: an algebraic approach 非线性可辨识性:一个代数方法

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296445

S.E. Asmi

引用次数: 1

Convergence speed improvement for a variable step-size plain gradient algorithm by using variable notch bandwidth technique 利用变陷波带宽技术提高变步长平面梯度算法的收敛速度

3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the Pub Date : 2003-09-18 DOI: 10.1109/ISPA.2003.1296384

R. Punchalard, W. Lertvasana, Prawit Chumchu

引用次数: 2