{"title":"Analysis of methods for the recognition of Indian coins: A challenging application of machine vision to automated inspection","authors":"Keyur D. Joshi, B. Surgenor, V. D. Chauhan","doi":"10.1109/M2VIP.2016.7827286","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827286","url":null,"abstract":"The subject of this paper is a particularly challenging machine vision (MV) based sorting application where the ‘part’ is an Indian coin. The application is challenging in part because of the lack of distinctive features to differentiate between denominations as well as the variability in the features for a given denomination. Although there are coin recognition algorithms documented in the literature, the applications are typically tested off-line with static images of the coins. In this paper, a MV-based system for on-line recognition and counting of Indian coins moving on a conveyor is evaluated. The accuracy and performance of three different techniques are compared: particle classification, pattern matching and geometric matching. The conclusion is that none of these three techniques produced acceptable results, where the goal was to achieve 95% accuracy at 1000 coins/min.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130490888","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}
Ryman Hashem, Weiliang Xu, M. Stommel, Leo K. Cheng
{"title":"Conceptualisation and specification of a biologically-inspired, soft-bodied gastric robot","authors":"Ryman Hashem, Weiliang Xu, M. Stommel, Leo K. Cheng","doi":"10.1109/M2VIP.2016.7827316","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827316","url":null,"abstract":"Digestion of food is a regular activity in many species to maintain nourishment and growth. In humans, a typical digestion depends on the process of a churning action to break down the food in a stomach. Medical and biomedical experts stated that this physical motility frequency and deformation significantly affect the digestion process. Antral contraction wave (ACW) is the mechanical peristalsis action occurs in the smooth muscles of a stomach. Researchers from diverse disciplines are seeking more understanding of the ACW mechanism. The current state of physical stomach replicants is usually rigid models. The motility of these robots is different compared to the observed biological organ. In response to this gap, the interest of the proposed robot is to mimic the ACW physical deformation more similar to the gastric motility. It is assumed that the biologically-inspired robot will facilitate the investigation of ACW by physical peristaltic actuation model. The conceptualisation and specification of the soft gastric actuator discussed in this article. The primary robot conduit had been designed with geometry similar to that in the biological gastric. The proposed actuation method was tested by finite element analysis (FEA) software preceding the final conceptual gastric-soft robot design.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123710342","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}
{"title":"Development of IMU-based angle measurement system for finger rehabilitation","authors":"Hsien-Ting Chang, Li-Wei Cheng, J. Chang","doi":"10.1109/M2VIP.2016.7827295","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827295","url":null,"abstract":"With rapid growing of medical demands, especially rehabilitation, for aging society and disabled population, devices such as prosthetics and exoskeletons are required not only to over assistant but to provide more detailed bioinformatics to help patients regain mobility and ability. Traditionally, measurement of posture of human body such as finger motions, is not simple and not compact. As such, the aim of this paper is devoted to development and validation of math model and algorithm to process data collected by multi-axis inertial measurement unit (IMU) for measuring human finger posture. It is showed that with the proposed method, accumulated error can be greatly reduced which exclude recursive calibrations and sensor fusion of IMU systems for real-time rehabilitation.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124787888","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}
{"title":"Uncertainty evaluation of a confocal image alignment assembly system for miniature parts","authors":"Yang Li, Xin Ye, Zhijing Zhang","doi":"10.1109/M2VIP.2016.7827303","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827303","url":null,"abstract":"The confocal image alignment assembly principle is briefly proposed and the micro-assembly system based on this alignment principle is set up. The confocal image alignment principle can greatly improve the accuracy and efficiency of the micro-assembly. The composition of micro-assembly system is introduced in detail. The detection accuracy of the laser scanning confocal microscope can reach the submicron level. The uncertainty is a significant assessment criterion of an assembly system. So the assembly deviation uncertainty of the micro-assembly system is calculated and obtained. The value of the uncertainty is a little big for precise micro-assembly. So the system has to be calibrated and the errors of the components should be compensated. Then the error of the assembly can be reduced a lot.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126577021","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}
{"title":"On complexity and effectiveness of attitude controllers of quad-rotor UAVs","authors":"L. Huang, Jiang Huang, J. Xu","doi":"10.1109/M2VIP.2016.7827273","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827273","url":null,"abstract":"This paper presents the results of simulation of several model based and model free attitude controllers of quad-rotor UAVs with an aim to find a simple and effective one suitable for the UAV developed in our lab. The backgrounds of the controllers are also described.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122016100","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}
{"title":"Measuring and imaging of a soft-bodied swallowing robot conduit deformation and internal structural change using videofluoroscopy","authors":"Mingzhu Zhu, Weiliang Xu, Leo K. Cheng","doi":"10.1109/M2VIP.2016.7827312","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827312","url":null,"abstract":"This paper presents a new method with which to characterize a soft-boded swallowing robot. The conduit deformation and internal structural changes are recorded by videofluoroscopy scanning. Metal markers are embedded into the esophageal wall to indicate the boundary of the conduit under X-ray. Two sets of experiments are carried out on the swallowing robot: fixed pressure and dry swallows, to explore the device response to changed chamber pressures. Both chamber area size and conduit displacement were measured and then analysed though a image processing software, called ImageJ. The conduit deformation is also profiled using curve fitting technique with the data obtained from imaging process. The experimental results validate the application of videofluoroscopy and ImagaJ for measuring and imaging the conduit's deformation of the swallowing robot, from which reasonable explanations and meaningful predictions of chamber deformation were made. This information is important for pressure trajectory generation and the construction of suitable sensors for future study.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123139751","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}
{"title":"Design and control strategy of humanoid lower limb exoskeleton driven by pneumatic artificial muscles","authors":"Shilong Wan, Mingxing Yang, Ruru Xi, Xingsong Wang, Ruiming Qian, Qingcong Wu","doi":"10.1109/M2VIP.2016.7827288","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827288","url":null,"abstract":"This paper firstly introduces a humanoid lower limb exoskeleton (HLLE) actuated by pneumatic artificial muscles. It is almost anthropomorphic and retains six degrees of freedom (DOFs) for each lower limb. Pneumatic artificial muscle (PAM) is designed and manufactured according to McKibben principle which has already been examined to acquire the basic static performance. Then, the fuzzy self-tuning PID (FSPID) control based on pulse-width modulation (PWM) is purposed to control the motion of HLLE and it is an effective strategy which does not rely on the kinetic model of the lower limb. Besides, inertial measurement units (IMUs) are installed on certain components to receive precise motion parameters timely, which aim to be able to get helpful feedback results. As the control center of the system, microcontroller unit (MCU) is mainly responsible for communicating with sensors and PC, generating PWM signals to regulate valves and dealing with data. In the application of the HLLE, an effective intelligent control strategy for lower limbs with PAMs is expected to acquire; and the research result is to be applied to the human body which is wearing HLLE in the future. As a consequence, what we have researched contributes much to the application of pneumatic artificial muscles in several fields, such as intelligent prosthesis device, medical rehabilitation exoskeleton and power-assisted exoskeleton. In the end, this paper gives an outline of the prospected work for later experimental research.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"PP 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126424314","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}
Shu-Wei Pu, J. Chang, Y. Pei, Chia-Chen Kuo, Mao-Jiun Wang
{"title":"Anthropometry-based structural design of a hand exoskeleton for rehabilitation","authors":"Shu-Wei Pu, J. Chang, Y. Pei, Chia-Chen Kuo, Mao-Jiun Wang","doi":"10.1109/M2VIP.2016.7827282","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827282","url":null,"abstract":"We propose a novel exoskeleton for grasping hand rehabilitation based on anthropometry. The proposed design has one degree of freedom (DOF) for each finger, yielding coordinated movement across the distal interphalangeal (DIP), proximal interphalangeal (PIP), and metacarpophalangeal (MCP) joints for each finger. The dimension of each segment is determined by hand anthropometric data obtained from measurements. Each finger is controlled by one motor to allow for independent movement of each finger, which is fundamental for hand dexterity. The design was guided by a proposed mechanical model (the exo-finger model) which was verified by simulation and validated by the movement recorded by prototype fingers. It is concluded that, in the present study, anthropometry-based structural design provides a framework for the development of exoskeletal robotic devices.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125638584","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}
{"title":"Operating an underwater manipulator via P300 brainwaves","authors":"Jin Zhang, Wei Li, Jiancheng Yu, Xiaoqian Mao, Mengfan Li, Genshe Chen","doi":"10.1109/M2VIP.2016.7827301","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827301","url":null,"abstract":"It would be difficult and stressful for a single operator to operate an underwater manipulator using his/her both hands in deep sea environments while the operator has to monitor or manipulate additional equipment. In order to reduce the operating pressure and make full use of the operator potentials, in this paper we propose a control strategy for operating the underwater manipulator via P300 brainwaves, which provides the operator a new way to operate the underwater manipulator without need for both hands. In this case, the two hands can be used to manipulate other equipment. The manipulator is a master-slave servo hydraulic manipulator with 7 functions, consisting of six degrees of freedom (DOFs) and a parallel gripper for manipulations. A p300 interface is designed by considering operation tasks of the underwater manipulator. It's a 3∗3 image matrix where each image corresponds to an underwater manipulator behavior. An experimental platform, in which a virtual underwater manipulator is developed, is used for validating the feasibility and effectiveness of the proposed brainwave-based strategy. Eight subjects are invited to do a typical underwater operational task, grasping a marine organism sample, on the virtual experimental platform. Their experimental results demonstrate that the proposed method is feasible and effective.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114363573","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}
{"title":"Double-shot inverse-phase color fringe projection profilometry using two-step phase shifting","authors":"S. Xing, Ping Chen, Yi Xiao","doi":"10.1109/M2VIP.2016.7827260","DOIUrl":"https://doi.org/10.1109/M2VIP.2016.7827260","url":null,"abstract":"A double-shot inverse-phase color fringe projection profilometry is proposed to measure 3D shape information by using two-step phase shifting. Each of these two patterns encoded with two sinusoidal patterns and one uniform intensity pattern is projected by a digital projection and recorded by a color CCD camera. Firstly, the captured color fringe patterns are separated into its RGB components and two-step phase shifting is composed with red and blue components. Secondly, the dominant error sources are analyzed to reduce the variable errors and the red and blue components are filtered with a band-pass filter by using fast Fourier transform. Finally, 3D shape information is decoded by applying 1D Hilbert Transform and the phase errors are weakened with the sum of inverse-phase. Simulation and experimental results demonstrate that the proposed approach is able to effectively suppress phase errors.","PeriodicalId":125468,"journal":{"name":"2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130396190","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}