Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326043
Florent Souvestre, M. Hafez, S. Régnier
This paper presents the working principle of a laser-based tracker for wide field of view applications. The objective is to develop a motion capture laser tracker based on a cost effective process that operates in the range of sub-centimeter accuracy. The laser tracker has a wide range of motion and can operate at high speed for both indoor and outdoor without the need for light calibration. Traditional laser scanning devices use expensive high dynamic steering mirror mechanism such as galvanometric scanners. The novel approach presented in this paper consists of splitting the tracking action into two sub-systems. First, a static local scanning based on several laser sources is implemented. The second sub-system consists of a global tracking that moves the overall head tracker using two electrical DC servo-motors. Applications targeted are object tracking and inspection of tanks. The approach is also valid for applications where traditional vision systems are not indicated because of non cooperative lighting condition and where an hemispheric field of view is required.
{"title":"A novel laser-based tracking approach for wide field of view for robotics applications","authors":"Florent Souvestre, M. Hafez, S. Régnier","doi":"10.1109/ISOT.2009.5326043","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326043","url":null,"abstract":"This paper presents the working principle of a laser-based tracker for wide field of view applications. The objective is to develop a motion capture laser tracker based on a cost effective process that operates in the range of sub-centimeter accuracy. The laser tracker has a wide range of motion and can operate at high speed for both indoor and outdoor without the need for light calibration. Traditional laser scanning devices use expensive high dynamic steering mirror mechanism such as galvanometric scanners. The novel approach presented in this paper consists of splitting the tracking action into two sub-systems. First, a static local scanning based on several laser sources is implemented. The second sub-system consists of a global tracking that moves the overall head tracker using two electrical DC servo-motors. Applications targeted are object tracking and inspection of tanks. The approach is also valid for applications where traditional vision systems are not indicated because of non cooperative lighting condition and where an hemispheric field of view is required.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"101 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":"134049520","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326044
A. Ghanbari, A. Rostami, M. M. S. Fakhrabadi, F. Janabi-Sharifi
The main goal of this study is the presentation and development of a novel optomechatronic force sensor based on optical coupling between two waveguides. Static and partially dynamic behavior of proposed system will be studied here.
{"title":"Prediction of the behavior of a microcantilever based optomechatronic force sensor by finite element method","authors":"A. Ghanbari, A. Rostami, M. M. S. Fakhrabadi, F. Janabi-Sharifi","doi":"10.1109/ISOT.2009.5326044","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326044","url":null,"abstract":"The main goal of this study is the presentation and development of a novel optomechatronic force sensor based on optical coupling between two waveguides. Static and partially dynamic behavior of proposed system will be studied here.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"14 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":"114309611","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326060
D. Hong, Hyungsuck Cho, M. Y. Kim, J. Moon
The DOF (depth of field) of an imaging system is closely related to the pupil function that describes the characteristics of the pupil such as size and shape. Shallow DOF is especially problematic in microscopic optical imaging systems because they have relatively large aperture size for high optical resolution. In this paper, a new DOF extension method is proposed. This is to acquire an image by integrating the incoming light while changing the size of annular pupil. By divining the pupil into annular form, the effect of the defocus aberration is reduced. Theoretical background and preliminary experimental results are shown. The results show that the DOF can effectively be extended by this method.
{"title":"Depth of field extension using variable annular pupil","authors":"D. Hong, Hyungsuck Cho, M. Y. Kim, J. Moon","doi":"10.1109/ISOT.2009.5326060","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326060","url":null,"abstract":"The DOF (depth of field) of an imaging system is closely related to the pupil function that describes the characteristics of the pupil such as size and shape. Shallow DOF is especially problematic in microscopic optical imaging systems because they have relatively large aperture size for high optical resolution. In this paper, a new DOF extension method is proposed. This is to acquire an image by integrating the incoming light while changing the size of annular pupil. By divining the pupil into annular form, the effect of the defocus aberration is reduced. Theoretical background and preliminary experimental results are shown. The results show that the DOF can effectively be extended by this method.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"23 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":"128737444","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326115
Myeong-Gyu Song, Young-Jun Hur, N. Park, Young-Pil Park, Kyoung-Su Park, Soo-Cheol Lim, Jaehyuk Park
In this paper, 2-axis voice coil actuator of optical image stabilization which is a technique to compensate a trembling of camera caused by a vibration of user's hand is suggested. The actuator is designed for mobile phone camera. Considering total size and application of auto focusing module, the concept of the moving auto-focusing module is selected for optical image stabilization. The handshake of mobile phone is measured to define the specification of the actuator. Two kinds of 2-axis mechanisms made of two prismatic joints are designed and united the electromagnetic part which is already designed. Finally, two types are fabricated and verified experimentally.
{"title":"Development of small sized actuator for optical image stabilization","authors":"Myeong-Gyu Song, Young-Jun Hur, N. Park, Young-Pil Park, Kyoung-Su Park, Soo-Cheol Lim, Jaehyuk Park","doi":"10.1109/ISOT.2009.5326115","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326115","url":null,"abstract":"In this paper, 2-axis voice coil actuator of optical image stabilization which is a technique to compensate a trembling of camera caused by a vibration of user's hand is suggested. The actuator is designed for mobile phone camera. Considering total size and application of auto focusing module, the concept of the moving auto-focusing module is selected for optical image stabilization. The handshake of mobile phone is measured to define the specification of the actuator. Two kinds of 2-axis mechanisms made of two prismatic joints are designed and united the electromagnetic part which is already designed. Finally, two types are fabricated and verified experimentally.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"30 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":"123483431","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326133
A. Trufasu, C. Comeaga, C. Nitu
The paper deals with the measuring of a robot displacement, by stereo image matching; images of a hotspot placed onto the robot, generated by LASER reflected radiation are acquired by two CCD cameras; the reflective point is up to designer, in this particular case being the reflective surface of a small ball placed in view field of cameras. The technique to determine the 3D displacement of the robot, using the image matching approach, is presented. Using a pair of stereo images, the coordinates for a set of points belonging to the robot in a reference position are computed in a 3D Cartesian system. The procedure is then repeated for a new position. In order to demonstrate the validity of this technique, some experimental results are also presented.
{"title":"Reflected hotspot used in industrial vision","authors":"A. Trufasu, C. Comeaga, C. Nitu","doi":"10.1109/ISOT.2009.5326133","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326133","url":null,"abstract":"The paper deals with the measuring of a robot displacement, by stereo image matching; images of a hotspot placed onto the robot, generated by LASER reflected radiation are acquired by two CCD cameras; the reflective point is up to designer, in this particular case being the reflective surface of a small ball placed in view field of cameras. The technique to determine the 3D displacement of the robot, using the image matching approach, is presented. Using a pair of stereo images, the coordinates for a set of points belonging to the robot in a reference position are computed in a 3D Cartesian system. The procedure is then repeated for a new position. In order to demonstrate the validity of this technique, some experimental results are also presented.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"84 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":"125935642","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326121
Ming Fang, H. Takauj, Shun'ichi Kaneko, H. Watanabe
This paper describes a novel and robust method of estimating optical flow for underwater image sequences. This method can give out reliable optical flows output, even if the quality of image is very poor. In order to estimate optical flow of current templtate, first, we divide the template into some sub-templates, and then copute the similarity profiles of each sub-template. These similarity profiles can be used to extract two voting roles: positive voting role and negative voting role. The positive voting role can be used to increase correct optical flows, and the negative voting role can be used to reduce incorrect optical flows. We use two voting qualification variable (TP, TQ) to control the positive and negative voting processing, and use a SNR value to evaluate the each voting result. The estimated optical flow is reliability when SNR value converge to infinity only by useing small TP and TQ.
{"title":"Robust optical flow estimation for underwater image","authors":"Ming Fang, H. Takauj, Shun'ichi Kaneko, H. Watanabe","doi":"10.1109/ISOT.2009.5326121","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326121","url":null,"abstract":"This paper describes a novel and robust method of estimating optical flow for underwater image sequences. This method can give out reliable optical flows output, even if the quality of image is very poor. In order to estimate optical flow of current templtate, first, we divide the template into some sub-templates, and then copute the similarity profiles of each sub-template. These similarity profiles can be used to extract two voting roles: positive voting role and negative voting role. The positive voting role can be used to increase correct optical flows, and the negative voting role can be used to reduce incorrect optical flows. We use two voting qualification variable (TP, TQ) to control the positive and negative voting processing, and use a SNR value to evaluate the each voting result. The estimated optical flow is reliability when SNR value converge to infinity only by useing small TP and TQ.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"16 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":"129303881","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326162
Baris Altiner, N. O. Unverdi
This paper initially investigates the design parameters for an EDFA (Erbium Doped Fiber Amplifier) simulation perspective. Complex effects which occur during the gain and noise figure improvement operations of EDFA are researched and simulated with an optical environment design software tool named OptiSystem. A gain flattered EDFA is simulated with the expected results.
{"title":"Modelling - Simulation and gain flattening improvements for an Erbium Doped Fiber Amplifier","authors":"Baris Altiner, N. O. Unverdi","doi":"10.1109/ISOT.2009.5326162","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326162","url":null,"abstract":"This paper initially investigates the design parameters for an EDFA (Erbium Doped Fiber Amplifier) simulation perspective. Complex effects which occur during the gain and noise figure improvement operations of EDFA are researched and simulated with an optical environment design software tool named OptiSystem. A gain flattered EDFA is simulated with the expected results.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"2 7 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":"116873778","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326056
S. Isikman, E. Erden, S. Varghese, Fahd Abdullah, Robin Augustine, R. Sprague, Voytek Andron, H. Urey
A self-oscillating scanned beam imaging device is presented, with variable focusing mechanism and extended imaging range. The focusing and imaging optics, as well as the die level laser diode and photodiode are integrated on the same platform, and scanned synchronously to extend the imaging range of the system. More than 600mm imaging range is achieved with 52° total optical scan angle. An integrated back-emf coil both enables the self-starting of the oscillations of the scanner, and also provides the velocity feedback for running the system in closed-loop. A special circuit is implemented to decrease the time to reach 80% of the full amplitude self-oscillations from 970ms down to 60ms.
{"title":"Self-oscillating FR4 laser scanner with integrated dynamic focus and extended imaging range","authors":"S. Isikman, E. Erden, S. Varghese, Fahd Abdullah, Robin Augustine, R. Sprague, Voytek Andron, H. Urey","doi":"10.1109/ISOT.2009.5326056","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326056","url":null,"abstract":"A self-oscillating scanned beam imaging device is presented, with variable focusing mechanism and extended imaging range. The focusing and imaging optics, as well as the die level laser diode and photodiode are integrated on the same platform, and scanned synchronously to extend the imaging range of the system. More than 600mm imaging range is achieved with 52° total optical scan angle. An integrated back-emf coil both enables the self-starting of the oscillations of the scanner, and also provides the velocity feedback for running the system in closed-loop. A special circuit is implemented to decrease the time to reach 80% of the full amplitude self-oscillations from 970ms down to 60ms.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"339 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":"124770667","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326083
E. Higurashi, R. Sawada, T. Suga
This paper focuses on heterogeneous integration technology and its application in optical displacement microsensor. The integration is based on the Au-Au surface-activated bonding at a relatively low bonding temperature of 150°C. Applying this technique, an ultra-compact and thin optical displacement microsensor with three-dimensional structure (2.8 mm × 2.8 mm × 1 mm thick) was fabricated. The feasibility of displacement measurement based on grating interferometer was demonstrated using the prototype microsensor.
本文重点研究了异构集成技术及其在光学位移微传感器中的应用。该集成基于Au-Au表面活化键合，键合温度相对较低，为150°C。利用该技术，制备了厚度为2.8 mm × 2.8 mm × 1mm的超紧凑、超薄的三维光学位移微传感器。利用该微传感器样机验证了基于光栅干涉仪进行位移测量的可行性。
{"title":"Heterogeneous integration towards an ultra-compact and thin optical displacement microsensor","authors":"E. Higurashi, R. Sawada, T. Suga","doi":"10.1109/ISOT.2009.5326083","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326083","url":null,"abstract":"This paper focuses on heterogeneous integration technology and its application in optical displacement microsensor. The integration is based on the Au-Au surface-activated bonding at a relatively low bonding temperature of 150°C. Applying this technique, an ultra-compact and thin optical displacement microsensor with three-dimensional structure (2.8 mm × 2.8 mm × 1 mm thick) was fabricated. The feasibility of displacement measurement based on grating interferometer was demonstrated using the prototype microsensor.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"4 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":"128540008","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}
Pub Date : 2009-11-10DOI: 10.1109/ISOT.2009.5326106
Jung-Gon Kim, Kyoung-Su Park, N. Park, Hyunseok Yang, Young-Pil Park
In this paper, the optimized anti-shock control algorithm is developed and implemented in an solid immersion lens (SIL)-based near-field (NF) storage systems to improve air gap control performance during dynamic conditions. Accordingly, to detect the stable gap error signal under continuous operating conditions, the air gap control performance must be increased to avoid collisions due to external shocks. In this study, we propose an anti-shock air gap control system using a double disturbance observer (DOB) and a dead-zone non-linear controller. Experimental results demonstrate that a double DOB with a dead-zone non-linear controller maintained the optical head with SIL optics for a 5.31 G@10 ms shock. Thus, the air gap control performance in the presence of external shocks was improved.
{"title":"Improved air gap control using optimized antishock control algorithm for SIL-based near-field storage system","authors":"Jung-Gon Kim, Kyoung-Su Park, N. Park, Hyunseok Yang, Young-Pil Park","doi":"10.1109/ISOT.2009.5326106","DOIUrl":"https://doi.org/10.1109/ISOT.2009.5326106","url":null,"abstract":"In this paper, the optimized anti-shock control algorithm is developed and implemented in an solid immersion lens (SIL)-based near-field (NF) storage systems to improve air gap control performance during dynamic conditions. Accordingly, to detect the stable gap error signal under continuous operating conditions, the air gap control performance must be increased to avoid collisions due to external shocks. In this study, we propose an anti-shock air gap control system using a double disturbance observer (DOB) and a dead-zone non-linear controller. Experimental results demonstrate that a double DOB with a dead-zone non-linear controller maintained the optical head with SIL optics for a 5.31 G@10 ms shock. Thus, the air gap control performance in the presence of external shocks was improved.","PeriodicalId":366216,"journal":{"name":"2009 International Symposium on Optomechatronic Technologies","volume":"22 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":"128621260","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}
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