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2009 International Symposium on Optomechatronic Technologies最新文献

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A novel line detection method using magnetic sensor for the optical inspection of electrical short defects on TFT LCD 提出了一种利用磁传感器进行TFT液晶屏电短缺陷光学检测的新型线路检测方法
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326084
Il-Han Hwang, Hee-Gu Yang, Sang-Su Choi, Seong-Yeol Lee, Chang-Wook Jeong, DaeHwa Jeong
{"title":"A novel line detection method using magnetic sensor for the optical inspection of electrical short defects on TFT LCD","authors":"Il-Han Hwang, Hee-Gu Yang, Sang-Su Choi, Seong-Yeol Lee, Chang-Wook Jeong, DaeHwa Jeong","doi":"10.1109/ISOT.2009.5326084","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326084","url":null,"abstract":"A novel detection method is suggested using magnetic sensor to detect the short-defect line on LCD-TFT panel. With the voltage applied to the TFT panel, current flows along the short-defect line generating magnetic field around it. By scanning the magnetic sensor across the TFT panel, the defect line can be detected. Vision inspection is performed along the detected line to find out the defect point. Three main types of short-defects on TFT panel are tested and their locations are successfully detected by the suggested method.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132080561","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
Development of 3-D shapes estimation by using single X-ray image 单张x射线图像三维形状估计的研究进展
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326040
S. Cho, Hyuk-Hoon Shim, Jong-Hyeong Kim, Chun-Sam Song, Joon Hyun Kim, Won-Jong Joo
{"title":"Development of 3-D shapes estimation by using single X-ray image","authors":"S. Cho, Hyuk-Hoon Shim, Jong-Hyeong Kim, Chun-Sam Song, Joon Hyun Kim, Won-Jong Joo","doi":"10.1109/ISOT.2009.5326040","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326040","url":null,"abstract":"X-ray images are heavily affected by noise which makes normal image processing not workable. This paper suggested a new method to identify the primary 3-D shape of an embedded object and its pose by using only single X-ray image. The image feature consists of corner points and edge/intersection lines of adjacent surfaces. The intensity of an X-ray image is attenuated exponentially with increasing the penetration thickness. The main finding is to model a precise exponential relationship to fit the variation of X-ray image intensity. It applied a least-square-method to the X-ray projection image and effectively extracted edges and intersection lines from the noise of X-ray image.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127858941","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
An automatic color correction method inspired by the retinex and opponent colors theories 一种受视网膜和反色理论启发的自动色彩校正方法
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326047
Massimo Fierro, Ho-Gun Ha, Yeong-Ho Ha
{"title":"An automatic color correction method inspired by the retinex and opponent colors theories","authors":"Massimo Fierro, Ho-Gun Ha, Yeong-Ho Ha","doi":"10.1109/ISOT.2009.5326047","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326047","url":null,"abstract":"Color correction indicates the process of changing the colors of a digital image in order to reach given objectives. Usually the criteria under which color correction is performed match those of white-balancing and color constancy. In this work we present and automatic color correction method inspired by the Retinex and opponent colors theories with theoretical applicability on images with multiple illuminants. The method here presented has been tested in the field of skin tone color correction.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115382661","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: 5
High-resolution high-speed spectral domain optical coherence tomography 高分辨率高速光谱域光学相干层析成像
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326091
Cheol Song, MyoungKi Ahn, D. Gweon, Hyungsuck Cho
{"title":"High-resolution high-speed spectral domain optical coherence tomography","authors":"Cheol Song, MyoungKi Ahn, D. Gweon, Hyungsuck Cho","doi":"10.1109/ISOT.2009.5326091","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326091","url":null,"abstract":"We have designed the spectral domain optical coherence tomography system using a broadband superluminescent diode laser source and home-built spectrometer, which acquires 2D or 3D images with high speed and high resolution. We have also introduced the N-point complex FFT algorithm, which is faster than 2N point real FFT, into the signal processing part, thus shortening signal processing time after image data acquisition. For the sake of convenient measurements, the spectral domain optical coherence tomography was manufactured in the form of a microscope. The volumetric image of a mouse anterior eye could be reconstructed from a few hundred 2D images.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116524219","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
Form measurement of thin cylinders using three-wavelength interferometry 用三波长干涉测量法测量薄圆柱体
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326108
Alexander Hoink, K. Meiners-Hagen, O. Jusko, A. Abou-Zeid
{"title":"Form measurement of thin cylinders using three-wavelength interferometry","authors":"Alexander Hoink, K. Meiners-Hagen, O. Jusko, A. Abou-Zeid","doi":"10.1109/ISOT.2009.5326108","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326108","url":null,"abstract":"A new interferometric measurement technique for form measurements of cylindrical objects with diameters up to 2.5 mm is presented. This technique provides a contactless and non-scanning form measurement of reflective cylinders with a resolution in the nanometre range. The specimen is placed in the centre of an inverse conic mirror and is illuminated by a diode laser. The reflected light is superposed under a slight angle with a reference beam and imaged on a CCD camera. From the recorded interferogram the surface topography of the specimen can be derived by a spatial phase shifting algorithm. The measurement range can be varied from the nanometre to the micrometre range by using three lasers with different wavelengths. Results of form measurements of different samples are presented and discussed.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129501069","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
Comparison of different peak detection algorithms with regards to spectrometic fiber Bragg grating interrogation systems 光谱光纤布拉格光栅讯问系统中不同峰值检测算法的比较
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326110
T. Bodendorfer, M. S. Muller, F. Hirth, A. Koch
{"title":"Comparison of different peak detection algorithms with regards to spectrometic fiber Bragg grating interrogation systems","authors":"T. Bodendorfer, M. S. Muller, F. Hirth, A. Koch","doi":"10.1109/ISOT.2009.5326110","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326110","url":null,"abstract":"The resolution of many optical measurement systems employing 1D or 2D array sensors (e.g. CCD-cameras) is limited by the pixel-resolution of the detector. Subpixel algorithms allow to exceed this limit.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129710636","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: 34
Experimental investigation of polarization rotation in twisted optical fibers 扭曲光纤偏振旋转的实验研究
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326079
H. El-khozondar, M. S. Muller, T. Buck, R. El-Khozondar, A. Koch
{"title":"Experimental investigation of polarization rotation in twisted optical fibers","authors":"H. El-khozondar, M. S. Muller, T. Buck, R. El-Khozondar, A. Koch","doi":"10.1109/ISOT.2009.5326079","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326079","url":null,"abstract":"The twist induced polarization rotation in birefringent optical fibers is well understood and has been treated in the late seventies. We recently derived a formulation of the polarization rotation in twisted optical fibers using a tensorial coupled mode approach, that, other than existing theories, employs a fixed reference frame. This is interesting for fiber sensing applications, where the perturbing effects onto the fiber, such as strains induced by embedding the fiber into a host material, are conventionally given in a fixed laboratory reference frame. Hence, the derived theory can easily be integrated into existing formulations in the laboratory reference frame. In this work we demonstrate the experimental verification of the derived theory.We mechanically twist an optical fiber using an automated test stand and recording the change in polarization. The results are in close agreement with the theory.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130913091","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
A high precision heterodyne interferometer for relative and absolute displacement measurement 用于相对和绝对位移测量的高精度外差干涉仪
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326055
M. Gohlke, T. Schuldt, D. Weise, U. Johann, A. Peters, C. Braxmaier
{"title":"A high precision heterodyne interferometer for relative and absolute displacement measurement","authors":"M. Gohlke, T. Schuldt, D. Weise, U. Johann, A. Peters, C. Braxmaier","doi":"10.1109/ISOT.2009.5326055","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326055","url":null,"abstract":"The gravitational wave detector LISA utilizes as current baseline a high sensitivity Optical Readout (ORO) for measuring the relative position and tilt of a free flying proof mass with respect to the satellite housing. The required sensitivities in the frequency band from 30 µHz to 1 Hz are in the picometer range for the translation and in the nanoradiant range for the tilt measurement. EADS Astrium, in collaboration with the Humboldt University Berlin and the University of Applied Sciences Konstanz, has realized a prototype ORO over the past years. The interferometer is based on a highly symmetric design where both, measurement and reference beam have a similar optical pathlength, and the same frequency and polarization. The technique of differential wavefront sensing (DWS) for tilt measurement is implemented. With our setup noise levels below 5pm/√HZ for translation and below 10nrad/√Hz for tilt measurements-both for frequencies above 10mHz-were demonstrated. We give an overview over the experimental setup, its current performance and the planned improvements.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125279295","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: 5
Design of an ultra thin secondary lens for visible light communication based on a white LED 基于白光LED的超薄可见光通信二次透镜的设计
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326113
Jae-Young Joo, Sun-Kyu Lee, Chang Seog Kang, Soon-Sub Park
{"title":"Design of an ultra thin secondary lens for visible light communication based on a white LED","authors":"Jae-Young Joo, Sun-Kyu Lee, Chang Seog Kang, Soon-Sub Park","doi":"10.1109/ISOT.2009.5326113","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326113","url":null,"abstract":"Light-emitting diodes (LEDs) have begun to penetrate the traditional lighting industry and have left a profound impact on the illumination of thin and portable personnel telecommunication devices. Aside from this, LEDs can also be used in the design of visible optical wireless communication systems. In lighting applications, Surface Mount Device (SMD) LEDs play an important role; however, their low light flux brought about by the large viewing angle should be redistributed to increase luminescence and the communication range in communication applications. For this reason, the current study issue in this application is how to achieve a long data transmission range while dramatically reducing the overall system size for use in thin electronic products. This work presents a proposed design of an ultra-thin secondary lens for visible light communication based on white LEDs. The accurate physical modeling of a chip die and its package can make ray-trace simulation a powerful tool in predicting power distribution of the SMD LEDs in the near-field. To verify the proposed method, modeled ray data was compared with measured data. While relaxing several design constraints, the secondary light colliminator was carried out with a solution of a central refractive aspheric surface and an outer reflective surface. The optical performance of the modeled LEDs was very similar to the real one. The designed lens reduced the viewing angle of white SMD LEDs from 120° to 20° in FWHM. The proposed lens is extremely compact and efficient and is a good starting point in achieving an effective design of visible light communication between personnel telecommunication devices.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125289085","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: 5
Novel tuning method for optofluidics 一种新的光流体调谐方法
2009 International Symposium on Optomechatronic Technologies Pub Date : 2009-11-10 DOI: 10.1109/ISOT.2009.5326158
Wuzhou Song, D. Psaltis
{"title":"Novel tuning method for optofluidics","authors":"Wuzhou Song, D. Psaltis","doi":"10.1109/ISOT.2009.5326158","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326158","url":null,"abstract":"We introduce a novel tuning mechanism for optofluidic devices by embedding pressure driven actuator inside microfluidic chips. Multiple tunable optofluidic devices remotely controlled by the pressure of air or liquid were demonstrated.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132002617","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
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