Industrial Metrology最新文献_第8页

Automated grading of wood slabs: The development of a prototype system 木板的自动分级:原型系统的开发

Industrial Metrology Pub Date : 1992-05-01 DOI: 10.1016/0921-5956(92)80005-E

Bjarne Kj˦r Ersbøll, Knut Conradsen

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引用次数: 14

Ultrasonic scanning of logs 测井曲线超声扫描

Industrial Metrology Pub Date : 1992-05-01 DOI: 10.1016/0921-5956(92)80007-G

Wei Han , Rolf Birkeland

引用次数: 23

A machine vision system forautomatically grading hardwood lumber 用于对硬木木材进行自动分级的机器视觉系统

Industrial Metrology Pub Date : 1992-05-01 DOI: 10.1016/0921-5956(92)80011-H

Richard W. Conners, Tai-Hoon Cho, Chong T. Ng, Thomas H. Drayer, Philip A. Araman, Robert L. Brisbin

{"title":"A machine vision system forautomatically grading hardwood lumber","authors":"Richard W. Conners, Tai-Hoon Cho, Chong T. Ng, Thomas H. Drayer, Philip A. Araman, Robert L. Brisbin","doi":"10.1016/0921-5956(92)80011-H","DOIUrl":"10.1016/0921-5956(92)80011-H","url":null,"abstract":"<div><p>Any automatic system for grading hardwood lumber can conceptually be dividedinto two components. One of these is a machine vision system for locating and identifying grading defects. The other is an automatic grading program that accepts as input the output of the machine vision system and, based on these data, determines the grade of a board. The progress that has been made on developing the first component, the machine vision component, will be reported in this paper. The machine vision system being developed is made up of a subsystem for imaging rough lumber surfaces, a computer vision subsystem for analyzing the image data and identifying grading defects, a materials handling subsystem for moving boards through the imaging devices, a computer for executing the algorithms comprising the computer vision sub-system and, finally, another small computer for controlling all the other components. This paper will describe the progress that has been made on developing all of these components. It will also indicate the directions for future research. A major goal of this research activity is to create a vision technology that will be applicable to not only the grading of hardwood lumber but a number of other forest products related applications as well.</p></div>","PeriodicalId":100666,"journal":{"name":"Industrial Metrology","volume":"2 3","pages":"Pages 317-342"},"PeriodicalIF":0.0,"publicationDate":"1992-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0921-5956(92)80011-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76957562","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: 37

Detecting knots and voids in lumber with dielectric sensors 用介电传感器检测木材中的结和空隙

Industrial Metrology Pub Date : 1992-05-01 DOI: 10.1016/0921-5956(92)80010-Q

R.W. Rice, P.H. Steele, Lalit Kumar

引用次数: 9

Real-time surface grading of profiled wooden boards 型材的实时表面分级

Industrial Metrology Pub Date : 1992-05-01 DOI: 10.1016/0921-5956(92)80008-H

W. Pölzleitner, G. Schwingshakl

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引用次数: 49

An evaluation of color spaces fordetecting defects in Douglas-fir veneer 道格拉斯杉木单板缺陷检测的色彩空间评价

Industrial Metrology Pub Date : 1992-05-01 DOI: 10.1016/0921-5956(92)80002-B

Charles C. Brunner , Alberto G. Maristany , David A. Butler , Dawn VanLeeuwen , James W. Funck

{"title":"An evaluation of color spaces fordetecting defects in Douglas-fir veneer","authors":"Charles C. Brunner , Alberto G. Maristany , David A. Butler , Dawn VanLeeuwen , James W. Funck","doi":"10.1016/0921-5956(92)80002-B","DOIUrl":"10.1016/0921-5956(92)80002-B","url":null,"abstract":"<div><p>Color information can be valuable for detecting and classifying surface defects inwood, but its usefulness depends on the color data's format and the analysis technique used. This study investigates five color transforms that convert the National Television Standards Committee red, green, and blue (RGB) primary color space into other potentially more useful spaces. A quadratic classifier was used to evaluate the relative utility of the different color spaces in separating defects from clear wood. Images of Douglas-fir veneer with encased knots, intergrown knots, and pitch streaks were converted to the various color spaces and then analyzed. The results show, for the conditions in this study, that a two-dimensional feature space is sufficient for classification and that there are no practically important differences in performance among the different color spaces. Thus, for images of Douglas-fir veneer, it appears that there is no advantage in mathematically transforming the original RGB data into another color space.</p></div>","PeriodicalId":100666,"journal":{"name":"Industrial Metrology","volume":"2 3","pages":"Pages 169-184"},"PeriodicalIF":0.0,"publicationDate":"1992-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0921-5956(92)80002-B","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86742867","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: 40

Application of the Poiseuilleequation to the treatment of laminar flowmeter calibration data 泊泽伊方程在层流流量计标定数据处理中的应用

Industrial Metrology Pub Date : 1992-03-01 DOI: 10.1016/0921-5956(92)80022-L

Frank E. Jones

引用次数: 0

Homodyne interferometric displacement measurement using multimode fiber speckles 利用多模光纤散斑的纯差干涉位移测量

Industrial Metrology Pub Date : 1992-03-01 DOI: 10.1016/0921-5956(92)80027-Q

S. Kawata, K. Matsubaral