Sixth Multidimensional Signal Processing Workshop,最新文献

A filtering approach to the two-dimensional volume conductor forward and inverse problems 二维体积导体正反问题的滤波方法

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1991-04-01 DOI: 10.1109/MDSP.1989.97099

T. G. Xydis, A. Yagle

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引用次数: 4

Time-limited waveform synthesis for range-Doppler radar 距离-多普勒雷达时域波形合成

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.97024

O. Arikan, D. Munson

引用次数: 0

Parallel algorithms and architectures for image analysis and computer vision 用于图像分析和计算机视觉的并行算法和架构

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.96986

C. R. Dyer

引用次数: 0

Characterization of task performance based on maximum a posteriori reconstructions 基于最大后验重构的任务性能表征

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.97115

K. Hanson

{"title":"Characterization of task performance based on maximum a posteriori reconstructions","authors":"K. Hanson","doi":"10.1109/MDSP.1989.97115","DOIUrl":"https://doi.org/10.1109/MDSP.1989.97115","url":null,"abstract":"The performance of two related tasks, object detection and object amplitude estimation, is investigated. These tasks are related because the best amplitude estimate is the appropriate decision variable for the detection task. Different results have been observed for these two tasks as a function of lambda (a scalar which controls the strength of regularization) in a study restricted to images containing a mixture of high- and low-contrast nonoverlapping disks on a zero background. It has been found that in maximum a posteriori reconstructions the contrast of the low-contrast disks relative to the background decreases steadily as lambda increases. Thus the estimates for the amplitude of these disks deviate from their actual values. On the other hand, the detectability index does not change as quickly. The reason for this is that detectability is based on the separation of the estimate of the amplitude of the object relative to the estimate of the background value compared to their RMS deviations. The choice of lambda obviously becomes an important issue as it affects the bias in the estimated amplitude. It is postulated that the same behavior holds for many other types of Tikhonov regularization.<<ETX>>","PeriodicalId":340681,"journal":{"name":"Sixth Multidimensional Signal Processing Workshop,","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129325277","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

Multiresolution analysis in non-homogeneous media 非均匀介质中的多分辨率分析

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1007/978-3-642-75988-8_25

R. Coifman

引用次数: 10

Parametric morphological filters for pattern restoration 用于模式恢复的参数形态滤波器

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.97110

D. Schonfeld, J. Goutsias

引用次数: 2

Environment model for advanced robots 先进机器人的环境模型

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.97032

R. Jain

引用次数: 0

A multiplicative Zac transform 一个乘法Zac变换

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.97061

R. Tolimieri

引用次数: 0

Non-parametric tracking of shift and shape functions in medical images 医学图像中移位和形状函数的非参数跟踪

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.97015

Jeffrey A. Fessler, Albert Macovski, Stanford University

引用次数: 1

Numerical analysis of visual patterns 视觉图形的数值分析

Sixth Multidimensional Signal Processing Workshop, Pub Date : 1989-09-06 DOI: 10.1109/MDSP.1989.96993

A. Bovik, N. Gopal, T. Emmoth

{"title":"Numerical analysis of visual patterns","authors":"A. Bovik, N. Gopal, T. Emmoth","doi":"10.1109/MDSP.1989.96993","DOIUrl":"https://doi.org/10.1109/MDSP.1989.96993","url":null,"abstract":"Summary form only given, as follows. Similarities are found between spatial pattern analysis and other low-level cooperative image analysis tasks. Visual pattern analysis proceeds analogously via estimation of emergent 2D image frequencies. Unlike shape-from-X or optical flow paradigms, constraints are derived from the responses of multiple oriented spatial frequency channels rather than directly from the image irradiance measurements. By selecting channel filters that are sufficiently concentrated in both space and frequency, highly accurate spatial frequency estimates are computed on a local basis. Two related methods are proposed. In the first, a constrained estimate of the emergent image frequencies is obtained by resolving the responses of multiple channel filters in a process similar to photometric stereo. The second approach formulates the estimation of frequencies as an extremum problem regularized by a smoothing term. An iterative constraint propagation algorithm is developed analogous to those used in variational/relaxational approaches to shape-from-X (shading, texture) and optical flow. Examples illustrate both approaches using synthetic and natural images.<<ETX>>","PeriodicalId":340681,"journal":{"name":"Sixth Multidimensional Signal Processing Workshop,","volume":"49 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130031745","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