Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Optical Technique》 2018-05
Add to Favorite Get Latest Update

Study on image rotation of digital image correlation measurement with unfixed camera

ZHANG Jinxiu;QIU Longhui;LUO Huafeng;ZHU Lin;LIANG Zhenning;College of Electromechanical Engineering,Qingdao University of Science and Technology;  
The target speckle image may produce position movement and image rotation relative to the reference speckle image when the images of the surface are captured with non-fixed camera for digital image correlation method.The camera calibration method can be used to calculate the relative position of the object surface and the camera,but the rotation angle of the speckle image in the plane cannot be obtained.Digital image correlation method is sensitive to image rotation.The correlation between target subset and Reference subset is reduced rapidly with the increase of rotation angle.The effect of image rotation on the calculation precision of digital speckle correlation method is studied and the reason of correlation decreases with rotation angle is analyzed.The rotation angle and the displacements are calculated at the same time in order to improve the accuracy of the method.
【Fund】: 国家自然科学基金项目(51575287)
【CateGory Index】: TP391.41
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved