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

Probabilistic neural network analysis of quantitative nuclear features in predicting the risk of cancer recurrence at different follow-up times 定量核特征的概率神经网络分析在预测不同随访时间肿瘤复发风险中的应用

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.2003.1296438

P. Petalas, P. Spyridonos, D. Glotsos, Dionisis A. Cavouras, P. Ravazoula, G. Nikiforidis

{"title":"Probabilistic neural network analysis of quantitative nuclear features in predicting the risk of cancer recurrence at different follow-up times","authors":"P. Petalas, P. Spyridonos, D. Glotsos, Dionisis A. Cavouras, P. Ravazoula, G. Nikiforidis","doi":"10.1109/ISPA.2003.1296438","DOIUrl":"https://doi.org/10.1109/ISPA.2003.1296438","url":null,"abstract":"This paper explores the prognostic significance of automatically generated features from biopsies of superficial transitional cell carcinomas (TCCs) of urinary bladder in predicting the time interval in which the tumor is more likely to recur. Clinical material comprised 73 patients diagnosed with superficial TCC and followed-up for at least 60 months. Patients' data set was separated into three prognostic groups in respect to time interval in which the tumor may recur. For each case, 40 descriptive quantitative features related to nuclear characteristics were generated. The prognostic value of the estimated features was analyzed by means of a probabilistic neural network (PNN) classifier. To find best vector combination leading to the smallest classification error, an exhaustive search procedure in feature space was utilized. Classifier performance was evaluated by means of the leave-one-out method. Throughout the analysis of the prognostic feature combinations, four features, two describing nuclear texture, and two related to shape distribution of nuclei in the sample, were identified as the important markers for patients' outcome prediction. The overall predictive accuracy was 73%. Intermediate and long-term recurrent cases were identified with an accuracy of 76%. For the short-term group the predictive accuracy was 63%. The detection of recurrences in certain future time seems feasible by analyzing the prognostic information of nuclear features and incorporating the PNN model. The improvement in prognostic ability may be clinically important for patient follow-up, and therapeutic treatment.","PeriodicalId":218932,"journal":{"name":"3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the","volume":"75 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":"121085947","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

Directional analysis of image textures for feature extraction and segmentation 用于特征提取和分割的图像纹理方向分析

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.2003.1296872

I. Kontaxakis, E. Sangriotis, D. Martakos

引用次数: 4

A novel morphological subband decomposition scheme for 2D+t wavelet video coding 一种新的二维+t小波视频编码形态学子带分解方案

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.2003.1296901

G. Abhayaratne, H. Heijmans

引用次数: 9

A coding method for UVLC targeting efficient decoder architecture 一种针对高效解码器结构的UVLC编码方法

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.2003.1296935

Shang Xue, B. Oelmann

引用次数: 5

A hybrid fingerprint matcher in memory constrained environments 内存受限环境下的混合指纹匹配器

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.2003.1296350

V. Krivec, J. Birchbauer, W. Marius, H. Bischof

引用次数: 8

A new sinusoidal modelling approach for parametric speech and audio coding 一种新的正弦建模方法用于参数化语音和音频编码

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.2003.1296882

P. Vera-Candeas, N. Ruiz-Reyes, J. Curpián-Alonso, M. Rosa-Zurera

引用次数: 0

Video coding rate control strategy based on the characteristics of picture 基于图像特性的视频编码速率控制策略

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.2003.1296913

L. Xiaohui, Wu Xiaopei

引用次数: 0

Single chip FPGA realization of a 2D multicomponent wavelet transform 单片机FPGA实现二维多分量小波变换

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.2003.1296946

O. Venard, R. Lionti, L. Chra

引用次数: 0

Design of optimum recursive digital filters with double zeros on the unit circle leading to symmetric ladder wave digital filter structures 单位圆上双零的最佳递归数字滤波器的设计导致对称阶梯波数字滤波器结构

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.2003.1296865

B. Soltanian, T. Saramaki, H. Johansson

{"title":"Design of optimum recursive digital filters with double zeros on the unit circle leading to symmetric ladder wave digital filter structures","authors":"B. Soltanian, T. Saramaki, H. Johansson","doi":"10.1109/ISPA.2003.1296865","DOIUrl":"https://doi.org/10.1109/ISPA.2003.1296865","url":null,"abstract":"A class of odd-order low-pass recursive digital filters leading to symmetric ladder wave digital (LWD) filter implementations is introduced. In the pass-band, these filters have the same equiripple performance as elliptic filters of the same order, whereas in the stop-band there are the maximum numbers of double zeros. This implies that if the odd filter order is 2M+1, then, in addition to a single zero at z = 1, the proposed filter has M/2 complex-conjugate double zero pairs [(M-1)/2 double and one single complex-conjugate zero pair] on the unit circle for M even [odd]. By slightly modifying an algorithm proposed earlier by the second author, a very fast iterative technique is developed for designing these filters to exhibit also an equiripple stop-band performance. When implemented using LWD filter structures, the proposed filters have the following two benefits compared to elliptic filters. First, the resulting structure becomes symmetric, which reduces the number of distinct multipliers by a factor of two. Second, the maximum amplitude value remains to be unity as well as the two outputs of the LWD structure remain power complementary also after quantizing the coefficient values (without additional scaling operations being needed when implementing elliptic filters.) Examples are included illustrating that the price to be paid for these attractive properties is only a 3- to 5-dB reduction in the stop-band attenuation.","PeriodicalId":218932,"journal":{"name":"3rd International Symposium on Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the","volume":"63 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":"115589552","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

Versatile analogue motion estimator architecture 通用模拟运动估计器架构

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.2003.1296423

M. Panovic, A. Demosthenous

引用次数: 3