SPIE Defense + Commercial Sensing最新文献

Quantum algorithms 量子算法

SPIE Defense + Commercial Sensing Pub Date : 2018-12-01 DOI: 10.1117/12.477420

Bilha Segev

引用次数: 21

Consistency results for the ROC curves of fused classifiers 融合分类器ROC曲线的一致性结果

SPIE Defense + Commercial Sensing Pub Date : 2012-12-04 DOI: 10.1117/12.542284

Kristopher S. Bjerkaas, M. Oxley, K. Bauer

{"title":"Consistency results for the ROC curves of fused classifiers","authors":"Kristopher S. Bjerkaas, M. Oxley, K. Bauer","doi":"10.1117/12.542284","DOIUrl":"https://doi.org/10.1117/12.542284","url":null,"abstract":"The U.S. Air Force is researching the fusion of multiple sensors and classifiers. Given a finite collection of classifiers to be fused one seeks a new classifier with improved performance. An established performance quantifier is the Receiver Operating Characteristic (ROC) curve. This curve allows one to view the probability of detection versus probability of false alarm in one graph. In reality only finite data is available so only an approximate ROC curve can be constructed. Previous research shows that one does not have to perform an experiment for this new fused classifier to determine its ROC curve. If the ROC curve for each individual classifier has been determined, then formulas for the ROC curve of the fused classifier exist for certain fusion rules. This will be an enormous saving in time and money since the performance of many fused classifiers will be determined without having to perform tests on each one. But, again, these will be approximate ROC curves, since they are based on finite data. We show that if the individual approximate ROC curves are consistent then the approximate ROC curve for the fused classifier is also consistent under certain circumstances. We give the details for these circumstances, as well as some examples related to sensor fusion.","PeriodicalId":133868,"journal":{"name":"SPIE Defense + Commercial Sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134443777","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

Bio-inspired odor-based navigation 仿生气味导航

SPIE Defense + Commercial Sensing Pub Date : 2012-11-19 DOI: 10.1117/12.665842

M. Porter, J. Vasquez

引用次数: 6

Objective evaluation of four SAR image segmentation algorithms 客观评价了四种SAR图像分割算法

SPIE Defense + Commercial Sensing Pub Date : 2012-11-19 DOI: 10.1117/12.438228

Jason B. Gregga, S. Gustafson, G. Power

{"title":"Objective evaluation of four SAR image segmentation algorithms","authors":"Jason B. Gregga, S. Gustafson, G. Power","doi":"10.1117/12.438228","DOIUrl":"https://doi.org/10.1117/12.438228","url":null,"abstract":"Because of the large number of SAR images the Air Force generates and the dwindling number of available human analysts, automated methods must be developed. A key step towards automated SAR image analysis is image segmentation. There are many segmentation algorithms, but they have not been tested on a common set of images, and there are no standard test methods. This paper evaluates four SAR image segmentation algorithms by running them on a common set of data and objectively comparing them to each other and to human segmentations. This objective comparison uses a multi-measure approach with a set of master segmentations as ground truth. The measure results are compared to a Human Threshold, which defines the performance of human segmentors compared to the master segmentations. Also, methods that use the multi-measures to determine the best algorithm are developed. These methods show that of the four algorithms, Statistical Curve Evolution produces the best segmentations; however, none of the algorithms are superior to human segmentations. Thus, with the Human Threshold and Statistical Curve Evolution as benchmarks, this paper establishes a new and practical framework for testing SAR image segmentation algorithms.","PeriodicalId":133868,"journal":{"name":"SPIE Defense + Commercial Sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131849639","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: 3

Visual unified modeling language for the composition of scenarios in modeling and simulation systems 用于建模和仿真系统中场景组成的可视化统一建模语言

SPIE Defense + Commercial Sensing Pub Date : 2012-11-19 DOI: 10.1117/12.663672

M. Talbert, Daniel E. Swayne

{"title":"Visual unified modeling language for the composition of scenarios in modeling and simulation systems","authors":"M. Talbert, Daniel E. Swayne","doi":"10.1117/12.663672","DOIUrl":"https://doi.org/10.1117/12.663672","url":null,"abstract":"The Department of Defense uses modeling and simulation systems in many various roles, from research and training to modeling likely outcomes of command decisions. Simulation systems have been increasing in complexity with the increased capability of low-cost computer systems to support these DOD requirements. The demand for scenarios is also increasing, but the complexity of the simulation systems has caused a bottleneck in scenario development due to the limited number of individuals with knowledge of the arcane simulator languages in which these scenarios are written. This research combines the results of previous efforts from the Air Force Institute of Technology in visual modeling languages to create a language that unifies description of entities within a scenario with its behavior using a visual tool that was developed in the course of this research. The resulting language has a grammar and syntax that can be parsed from the visual representation of the scenario. The language is designed so that scenarios can be described in a generic manner, not tied to a specific simulation system, allowing the future development of modules to translate the generic scenario into simulation system specific scenarios.","PeriodicalId":133868,"journal":{"name":"SPIE Defense + Commercial Sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124895608","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

Two-band DMD-based infrared scene simulator 基于双波段dmd的红外场景模拟器

SPIE Defense + Commercial Sensing Pub Date : 2009-02-12 DOI: 10.1117/12.778466

J. R. Dupuis, D. Mansur, G. Genetti

引用次数: 10

Frontal sinus recognition for human identification 额窦识别用于人体识别

SPIE Defense + Commercial Sensing Pub Date : 2008-12-01 DOI: 10.1117/12.777706

Juan Rogelio Falguera, Fernanda Pereira Sartori Falguera, A. Marana

引用次数: 11

A novel low cost alternative to THz for security and defence applications 一种新型的低成本太赫兹替代安全和国防应用

SPIE Defense + Commercial Sensing Pub Date : 2008-10-02 DOI: 10.1117/12.799676

G. Diamond, D. Hutchins, P. Pallav, R. Green

{"title":"A novel low cost alternative to THz for security and defence applications","authors":"G. Diamond, D. Hutchins, P. Pallav, R. Green","doi":"10.1117/12.799676","DOIUrl":"https://doi.org/10.1117/12.799676","url":null,"abstract":"A novel technique of NIR imaging is presented that gives access to most of the applications currently published as being solely suitable for Terahertz (THz) waves. The technique uses NIR beams wavelengths found in ordinary domestic remote controls (circa 850 nm) and various signal recovery techniques commonly found in astronomy. This alternative technique can be realised by very simple and inexpensive electronics and is inherently far more portable and easy to use and no special sources are required. Transmission imaging results from this technique are presented from several industrial examples and various security applications and are compared and contrasted directly with their THz-derived counterparts. It would appear possible to very cheaply and simply emulate the performance of commercial terahertz systems at a fraction of the cost and with greatly reduced processing times Another advantage is that apart from imaging, this technique affords the means to provide simultaneous in-situ chemical-bond analysis for stand-off detection of certain chemical signatures - for example, those found in drugs and explosives (both molecular and oxidiser based). Also, unlike THz, this technique can penetrate bulk water and high humidity atmospheres and be used in transmission mode on biological and medical samples. Several results are presented of non-ionising X-ray type images that even differentiate between separate types of soft tissue","PeriodicalId":133868,"journal":{"name":"SPIE Defense + Commercial Sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114124193","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

Uncooled amorphous silicon XGA IRFPA with 17μm pixel-pitch for high end applications 非冷却非晶硅XGA红外fpa, 17μm像素间距，用于高端应用

SPIE Defense + Commercial Sensing Pub Date : 2008-10-02 DOI: 10.1117/12.779488

B. Fièque, P. Robert, C. Minassian, M. Vilain, J. Tissot, A. Crastes, O. Legras, J. Yon

引用次数: 24

IRST infrared background analysis of bay environments 海湾环境IRST红外背景分析

SPIE Defense + Commercial Sensing Pub Date : 2008-08-20 DOI: 10.1117/12.778449

P. Schwering, D. Bezuidenhout, W. H. Gunter, Francois P. J. le Roux, R. Sieberhagen

{"title":"IRST infrared background analysis of bay environments","authors":"P. Schwering, D. Bezuidenhout, W. H. Gunter, Francois P. J. le Roux, R. Sieberhagen","doi":"10.1117/12.778449","DOIUrl":"https://doi.org/10.1117/12.778449","url":null,"abstract":"Present-day naval operations take place in coastal environments as well as narrow straits all over the world. Coastal environments around the world are exhibiting a number of threats to naval forces. In particular a large number of asymmetric threats can be present in environments with cluttered backgrounds as well as rapidly varying atmospheric conditions. During trials executed in False Bay a large amount of target, background and atmosphere data was gathered that is of use in analysis of optical characteristics of targets and backgrounds. During the trials a variety of backgrounds were recorded. We have used these backgrounds to validate the TNO background model MIBS to incorporate also coastal backgrounds and sunlit sea backgrounds. In the paper we show results of the background analysis, for coastal bay backgrounds. In particular the detection of small targets by automatic system may be hampered by small surface structure variations at the surface and near the horizon. The data that we analyzed are sea surface structure, temporal behaviour, and spectral differences during different environmental conditions that occurred during the trials. This data is essential to feed detection algorithms, and performance models for the assessment of sensor performance in coastal environment. Some sensor management approaches for application in IRST systems is discussed.","PeriodicalId":133868,"journal":{"name":"SPIE Defense + Commercial Sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131038314","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: 11