Cloud Computing

云计算
  • 文章类型: Journal Article
    本文概述了基于云的通用医学图像存储库系统的部署协议。该提案不仅旨在部署,而且旨在自动扩展平台,结合人工智能(AI)来分析医学图像检查。该方法包括通过通用数据库进行有效的数据管理,以及部署各种旨在帮助诊断决策的AI模型。通过提出这个协议,目标是克服影响工作流程所有阶段的技术挑战和问题,从数据管理到人工智能模型在医疗保健领域的部署。这些挑战包括道德考虑,遵守法律法规,建立用户信任,确保数据安全。系统已经部署好了,经过测试和验证的概念证明,拥有每天接收数千张图像的能力,并维持新AI模型的持续部署,以加快医学影像检查的分析过程。
    This paper outlines the protocol for the deployment of a cloud-based universal medical image repository system. The proposal aims not only at the deployment but also at the automatic expansion of the platform, incorporating Artificial Intelligence (AI) for the analysis of medical image examinations. The methodology encompasses efficient data management through a universal database, along with the deployment of various AI models designed to assist in diagnostic decision-making. By presenting this protocol, the goal is to overcome technical challenges and issues that impact all phases of the workflow, from data management to the deployment of AI models in the healthcare sector. These challenges include ethical considerations, compliance with legal regulations, establishing user trust, and ensuring data security. The system has been deployed, with a tested and validated proof of concept, possessing the capability to receive thousands of images daily and to sustain the ongoing deployment of new AI models to expedite the analysis process in medical image exams.
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  • 文章类型: Journal Article
    将敏捷方法纳入创建可持续产品的重要性已被广泛讨论。这种方法可以加强创新整合,提高对不断变化的发展环境的适应性,并提高产品开发过程的效率和质量。虽然许多敏捷方法起源于软件开发环境,并基于成功的软件项目制定,他们经常由于不正确的程序和缺乏接受而失败,防止深度融入这个过程。此外,市场评估决策往往受到不明确和主观信息的阻碍。因此,这项研究介绍了用于可持续产品开发的扩展TOPSIS(通过与理想解决方案相似的订单性能技术)方法。该方法利用云模型理论解决随机性和不确定性(内不确定性)的优点以及粗糙集理论在不需要额外信息的情况下灵活处理市场需求不确定性的优点。该研究提出了一种综合加权方法,该方法考虑了主观和客观权重,以确定综合标准权重。它还提出了一个新的框架,名为“产品开发的可持续敏捷性”(SAPD),旨在评估可持续产品开发的评估标准。为了验证该方法的有效性,以中国中小企业为例进行了研究。获得的结果表明,公司需要进行产品结构研究和开发以实现新的产品功能。
    The importance of incorporating an agile approach into creating sustainable products has been widely discussed. This approach can enhance innovation integration, improve adaptability to changing development circumstances, and increase the efficiency and quality of the product development process. While many agile methods have originated in the software development context and have been formulated based on successful software projects, they often fail due to incorrect procedures and a lack of acceptance, preventing deep integration into the process. Additionally, decision-making for market evaluation is often hindered by unclear and subjective information. Therefore, this study introduces an extended TOPSIS (Technique for Order Performance by Similarity to Ideal Solution) method for sustainable product development. This method leverages the benefits of cloud model theory to address randomness and uncertainty (intrapersonal uncertainty) and the advantages of rough set theory to flexibly handle market demand uncertainty without requiring extra information. The study proposes an integrated weighting method that considers both subjective and objective weights to determine comprehensive criteria weights. It also presents a new framework, named Sustainable Agility of Product Development (SAPD), which aims to evaluate criteria for assessing sustainable product development. To validate the effectiveness of this proposed method, a case study is conducted on small and medium enterprises in China. The obtained results show that the company needs to conduct product structure research and development to realize new product functions.
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  • 文章类型: Journal Article
    背景:智能手机的使用在社会中广泛传播。它们的嵌入式功能和传感器可能在治疗监测和计划中发挥重要作用。然而,使用智能手机进行个人行为和身体监测尚未得到解决技术可靠性和接受度的充分研究的充分支持。
    目的:本文的目的是确定和讨论可能影响智能手机作为临床监测工具的广泛使用的技术问题。重点是数据的质量和获取过程的透明度。
    方法:QuantifyMyPerson是用于连续监控智能手机使用和嵌入式传感器数据的平台。该平台包括一个用于数据采集的应用程序,用于数据存储和处理的后端云服务器,以及用于数据管理和可视化的基于Web的仪表板。数据处理的目的是提取有意义的特征,用于描述日常生活,如电话状态,calls,应用程序使用,GPS,和加速度计数据。总共有健康受试者在智能手机上安装了该应用程序,运行它7个月。对采集的数据进行分析,以评估对智能手机性能的影响(即,电池消耗和功能异常)和数据完整性。通过计算k个最近的邻居全局异常分数来检测与其他日期不同的日期,从而评估了所选特征在描述日常生活变化中的相关性。
    结果:基于智能手机的监控的有效性取决于系统的可接受性和互操作性,因为用户保留和数据完整性是关键方面。该应用程序的完全透明度以及与日常使用智能手机没有任何冲突,证实了可接受性。唯一的问题是电池消耗,即使有和没有运行应用程序的电池消耗趋势是可比的。关于互操作性,该应用程序已成功安装并在多个Android品牌上运行。研究表明,一些智能手机制造商实施了省电政策,不允许连续的传感器数据采集和影响完整性。在节能政策不影响嵌入式传感器管理的智能手机上,数据完整性为96%,总体为84%。
    结论:连续行为和身体监测的主要技术障碍(即,电池消耗和制造商的省电政策)可能会被克服。电池消耗的增加主要是由于GPS三角测量,并且可能受到限制,而由于省电策略而丢失的数据仅与不使用电话的时间段有关,因为任何智能手机事件都会重新激活嵌入式传感器。总的来说,尽管Android市场分散,但基于智能手机的无源传感是完全可行和可扩展的。
    BACKGROUND: Smartphone use is widely spreading in society. Their embedded functions and sensors may play an important role in therapy monitoring and planning. However, the use of smartphones for intrapersonal behavioral and physical monitoring is not yet fully supported by adequate studies addressing technical reliability and acceptance.
    OBJECTIVE: The objective of this paper is to identify and discuss technical issues that may impact on the wide use of smartphones as clinical monitoring tools. The focus is on the quality of the data and transparency of the acquisition process.
    METHODS: QuantifyMyPerson is a platform for continuous monitoring of smartphone use and embedded sensors data. The platform consists of an app for data acquisition, a backend cloud server for data storage and processing, and a web-based dashboard for data management and visualization. The data processing aims to extract meaningful features for the description of daily life such as phone status, calls, app use, GPS, and accelerometer data. A total of health subjects installed the app on their smartphones, running it for 7 months. The acquired data were analyzed to assess impact on smartphone performance (ie, battery consumption and anomalies in functioning) and data integrity. Relevance of the selected features in describing changes in daily life was assessed through the computation of a k-nearest neighbors global anomaly score to detect days that differ from others.
    RESULTS: The effectiveness of smartphone-based monitoring depends on the acceptability and interoperability of the system as user retention and data integrity are key aspects. Acceptability was confirmed by the full transparency of the app and the absence of any conflicts with daily smartphone use. The only perceived issue was the battery consumption even though the trend of battery drain with and without the app running was comparable. Regarding interoperability, the app was successfully installed and run on several Android brands. The study shows that some smartphone manufacturers implement power-saving policies not allowing continuous sensor data acquisition and impacting integrity. Data integrity was 96% on smartphones whose power-saving policies do not impact the embedded sensor management and 84% overall.
    CONCLUSIONS: The main technological barriers to continuous behavioral and physical monitoring (ie, battery consumption and power-saving policies of manufacturers) may be overcome. Battery consumption increase is mainly due to GPS triangulation and may be limited, while data missing because of power-saving policies are related only to periods of nonuse of the phone since the embedded sensors are reactivated by any smartphone event. Overall, smartphone-based passive sensing is fully feasible and scalable despite the Android market fragmentation.
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  • 文章类型: Journal Article
    背景:在医疗保健信息学中越来越多地采用远程医疗物联网(IoT)设备,这引起了人们对能源使用和数据处理效率的担忧。
    目的:本文介绍了一种创新模型,该模型将远程医疗物联网设备与雾和基于云计算的平台集成在一起,旨在提高远程医疗物联网系统的能源效率。
    方法:所提出的模型结合了自适应节能策略,局部雾节点,和混合云基础设施。进行了仿真分析,以评估模型在降低能耗和提高数据处理效率方面的有效性。
    结果:仿真结果显示了显著的节能效果,通过自适应节能策略,能耗降低了2%。模拟的样本大小为10-40,为研究结果提供了统计稳健性。
    结论:所提出的模型成功解决了远程医疗物联网场景中的能源和数据处理挑战。通过集成用于本地处理的雾计算和混合云基础设施,实现了大量的节能。正在进行的研究将专注于完善节能模型,并探索其他功能增强功能,以更广泛地适用于医疗保健和工业环境。
    BACKGROUND: The increasing adoption of telehealth Internet of Things (IoT) devices in health care informatics has led to concerns about energy use and data processing efficiency.
    OBJECTIVE: This paper introduces an innovative model that integrates telehealth IoT devices with a fog and cloud computing-based platform, aiming to enhance energy efficiency in telehealth IoT systems.
    METHODS: The proposed model incorporates adaptive energy-saving strategies, localized fog nodes, and a hybrid cloud infrastructure. Simulation analyses were conducted to assess the model\'s effectiveness in reducing energy consumption and enhancing data processing efficiency.
    RESULTS: Simulation results demonstrated significant energy savings, with a 2% reduction in energy consumption achieved through adaptive energy-saving strategies. The sample size for the simulation was 10-40, providing statistical robustness to the findings.
    CONCLUSIONS: The proposed model successfully addresses energy and data processing challenges in telehealth IoT scenarios. By integrating fog computing for local processing and a hybrid cloud infrastructure, substantial energy savings are achieved. Ongoing research will focus on refining the energy conservation model and exploring additional functional enhancements for broader applicability in health care and industrial contexts.
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  • 文章类型: Journal Article
    背景:临床试验(CT)是循证医学发展的基础,招募足够数量的参与者是成功进行的关键步骤之一。然而,招募不良仍然是导致临床试验提前中止或费用昂贵的延长的最常见原因.
    方法:我们设计并实现了一种新颖的,开源软件系统,通过生成自动招募建议来支持临床试验中的招募过程。发展以现代为指导,云原生设计原则,并基于HealthLevel7(HL7)FastHealthcareInteroperabilityResources(FHIR)作为互操作性标准,将观察医疗结果合作伙伴关系(OMOP)通用数据模型(CDM)用作患者数据的来源。在部署应用程序以供研究人员使用后,我们使用系统可用性量表(SUS)评估了可用性。
    结果:实施基于OMOPCDM作为患者数据的存储库,根据给定的临床试验资格标准连续查询可能的试验候选者。可以使用基于网络的筛选列表来显示候选人,并且可以自动发送有关可能的新试验参与者的电子邮件通知。服务之间的所有交互都使用HL7FHIR作为通信标准。该系统可以使用标准容器技术进行安装,并支持在Kubernetes集群上进行更复杂的部署。最终用户(n=19)对系统的SUS评分为79.9/100。
    结论:我们贡献了一部小说,开源实施,以支持临床试验中的患者招募过程,该过程可以使用最先进的技术进行部署。根据SUS评分,该系统提供了良好的可用性。
    BACKGROUND: Clinical trials (CTs) are foundational to the advancement of evidence-based medicine and recruiting a sufficient number of participants is one of the crucial steps to their successful conduct. Yet, poor recruitment remains the most frequent reason for premature discontinuation or costly extension of clinical trials.
    METHODS: We designed and implemented a novel, open-source software system to support the recruitment process in clinical trials by generating automatic recruitment recommendations. The development is guided by modern, cloud-native design principles and based on Health Level 7 (HL7) Fast Healthcare Interoperability Resources (FHIR) as an interoperability standard with the Observational Medical Outcomes Partnership (OMOP) Common Data Model (CDM) being used as a source of patient data. We evaluated the usability using the system usability scale (SUS) after deploying the application for use by study personnel.
    RESULTS: The implementation is based on the OMOP CDM as a repository of patient data that is continuously queried for possible trial candidates based on given clinical trial eligibility criteria. A web-based screening list can be used to display the candidates and email notifications about possible new trial participants can be sent automatically. All interactions between services use HL7 FHIR as the communication standard. The system can be installed using standard container technology and supports more sophisticated deployments on Kubernetes clusters. End-users (n = 19) rated the system with a SUS score of 79.9/100.
    CONCLUSIONS: We contribute a novel, open-source implementation to support the patient recruitment process in clinical trials that can be deployed using state-of-the art technologies. According to the SUS score, the system provides good usability.
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  • 文章类型: Clinical Trial Protocol
    背景:由于患者生存的感知优势,建立了主动脉瘤疾病的血管内修复术,减少术后并发症,和更短的住院时间。高空间和对比度分辨率的3DCT血管造影图像用于计划程序并告知设备选择和制造,但是在标准护理中,手术是使用2DX射线透视的图像引导进行的,同时注射肾毒性造影剂以可视化血管。这项研究旨在评估对患者的益处,从业者,以及新型图像融合医疗设备(CydarEV)的健康服务,这使得这种高分辨率的3D信息可以在手术时提供给操作者。
    方法:该试验是一个多中心,开放标签,340名患者的双臂随机对照临床试验,随机1:1接受血管内动脉瘤修复的标准治疗或使用CydarEV的治疗,包括云计算的CE标记的医疗设备,增强智能,计算机视觉。主要结果是程序时间,次要结果是程序效率,技术有效性,患者结果,和成本效益。临床诊断为AAA或TAAA适合血管内修复并能够提供书面知情同意书的患者将被邀请参加。
    结论:该试验是第一个评估血管内主动脉手术中先进图像融合技术的随机对照试验,可以很好地评估该技术对患者预后和NHS成本的影响。
    背景:ISRCTN13832085。12月2021年3月3日。
    BACKGROUND: Endovascular repair of aortic aneurysmal disease is established due to perceived advantages in patient survival, reduced postoperative complications, and shorter hospital lengths of stay. High spatial and contrast resolution 3D CT angiography images are used to plan the procedures and inform device selection and manufacture, but in standard care, the surgery is performed using image-guidance from 2D X-ray fluoroscopy with injection of nephrotoxic contrast material to visualise the blood vessels. This study aims to assess the benefit to patients, practitioners, and the health service of a novel image fusion medical device (Cydar EV), which allows this high-resolution 3D information to be available to operators at the time of surgery.
    METHODS: The trial is a multi-centre, open label, two-armed randomised controlled clinical trial of 340 patient, randomised 1:1 to either standard treatment in endovascular aneurysm repair or treatment using Cydar EV, a CE-marked medical device comprising of cloud computing, augmented intelligence, and computer vision. The primary outcome is procedural time, with secondary outcomes of procedural efficiency, technical effectiveness, patient outcomes, and cost-effectiveness. Patients with a clinical diagnosis of AAA or TAAA suitable for endovascular repair and able to provide written informed consent will be invited to participate.
    CONCLUSIONS: This trial is the first randomised controlled trial evaluating advanced image fusion technology in endovascular aortic surgery and is well placed to evaluate the effect of this technology on patient outcomes and cost to the NHS.
    BACKGROUND: ISRCTN13832085. Dec. 3, 2021.
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  • 文章类型: Journal Article
    神经影像学的最新进展提高了我们对精神分裂症潜在生物学机制的理解。然而,难治性精神分裂症(TRS)的神经影像学检查结果尚不清楚.在本研究中,我们旨在通过使用MRICloud方法比较TRS和非TRS患者的神经解剖区域,探索精神分裂症患者可能与治疗抵抗相关的潜在神经解剖区域.共有33名精神分裂症患者(符合DSM5精神分裂症诊断标准)被纳入研究。将患者分为TRS(n=18)和非TRS(n=15)组,所有患者都接受了MRI检查。使用MRICloud方法比较TRS和非TRS患者的神经解剖区域。使用阳性和阴性综合征量表(PANSS)测量疾病严重程度。有趣的是,与非TRS患者相比,在TRS患者中发现有统计学意义的更大的左侧Collosum(CC)厚度.很明显,需要进一步研究比较TRS患者与非TRS患者,这些研究应该集中在call体的回路上,这些回路被认为在治疗抵抗中起作用。还需要进一步的纵向研究来补充横断面研究,在具有明确定义的TRS标准的患者中使用多模态成像方法。
    Recent developments in neuroimaging have improved our understanding of the biological mechanisms underlying schizophrenia. However, neuroimaging findings in treatment-resistant schizophrenia (TRS) remain unclear. In the present study, we aimed to explore potential neuroanatomical regions that may be associated with treatment resistance in schizophrenia patients by comparing neuroanatomical regions of TRS and non-TRS patients using the MRICloud method. A total of 33 schizophrenia patients (meeting DSM 5 diagnostic criteria for schizophrenia) were included in the study. Patients were dichotomized into TRS (n = 18) and non-TRS (n = 15) groups, and all patients underwent MRI. Neuroanatomical regions of TRS and non-TRS patients were compared using the MRICloud method. Disease severity was measured using the Positive and Negative Syndrome Scale (PANSS). Interestingly, a statistically significant greater left Corpus Collosum (CC) thickness was found in TRS patients compared to non-TRS patients. It is clear that further studies comparing TRS patients with non-TRS patients are needed, and these studies should focus on the circuits in the corpus callosum that are thought to play a role in treatment resistance. Further longitudinal studies are also needed to complement the cross-sectional studies, using a multimodal imaging approach in the patients with clearly defined TRS criteria.
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  • 文章类型: Journal Article
    随着云计算、大数据等技术的快速发展,全国各级政府部门相继出台数字补贴政策,推动企业数字化转型.然而,这些政策的有效性及其真正实现政策目标的能力已成为整个社会的紧迫问题。在这种背景下,本文运用调节中介效应模型,实证分析了2013-2022年我国沪深股市财政补贴对A股制造业上市公司数字化转型的激励效应。研究结果表明,财政补贴对制造业企业数字化转型具有显著的促进作用,特别是对大型企业数字化转型产生了显著的激励影响,非资产密集型企业,技术密集型企业,和非劳动密集型企业。然而,对中小企业数字化转型的激励效应,资产密集型企业,非技术密集型企业,而劳动密集型企业意义不大。值得注意的是,财政补贴的扩大对制造企业研发投入的增加有积极的影响,随后为他们的数字化转型提供间接鼓励。此外,市场化程度的纳入意味着它有可能缓和财政补贴对企业数字化转型的直接和间接影响。本研究丰富了财政补贴在数字化转型中作用机制的研究,为市场参与如何影响财政补贴效应提供了经验证据,从而帮助决策者全面了解财政补贴政策对不同类型企业的影响。
    With the rapid development of technologies such as cloud computing and big data, various levels of government departments in the country have successively introduced digital subsidy policies to promote enterprises\' digital transformation. However, the effectiveness of these policies and their ability to truly achieve policy objectives have become pressing concerns across society. Against this backdrop, this paper employs a moderated mediation effects model to empirically analyze the incentive effects of financial subsidies on the digital transformation of A-share listed manufacturing companies in the Shanghai and Shenzhen stock markets from 2013 to 2022. The research findings indicate a significant promotion effect of financial subsidies on the digital transformation of manufacturing enterprises, especially demonstrating a notable incentive impact on the digital transformation of large enterprises, non-asset-intensive enterprises, technology-intensive enterprises, and non-labor-intensive enterprises. However, the incentive effect on the digital transformation of small and medium-sized enterprises (SMEs), asset-intensive enterprises, non-technology-intensive enterprises, and labor-intensive enterprises is not significant. Notably, the expansion of financial subsidies positively influences the augmentation of R&D investment within manufacturing enterprises, subsequently providing indirect encouragement for their digital transformation. Additionally, the incorporation of the degree of marketization implies its potential to moderate both the direct and indirect impacts of financial subsidies on enterprise digital transformation. This study enriches the research on the mechanism of the role of financial subsidies in digital transformation and provides empirical evidence on how market participation influences the effects of financial subsidies, thereby assisting policymakers in comprehensively understanding the impact of financial subsidy policies on different types of enterprises.
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  • 文章类型: Journal Article
    Web实时通信(WebRTC)是一种开源技术,可实现远程对等视频和音频连接。它已迅速成为通过Web进行实时通信的新标准,并且通常用作视频会议平台。在这项研究中,我们提出了一个不同的应用领域,这可能会极大地受益于WebRTC技术,这是基于虚拟现实(VR)的手术模拟。虚拟肩袖关节镜技能训练器(ViRCAST)是我们的测试平台,我们完成了WebRTC的初步可行性研究。由于云计算的弹性提供了满足未来可能的硬件/软件需求和需求增长的能力,ViRCAST部署在云环境中。此外,为了进行合理的模拟和互动,任何基于VR的手术模拟器都必须具有触觉反馈。因此,我们实现了WebRTC的接口,用于集成触觉设备。我们通过各种客户端配置下的触觉集成WebRTC在Google云上测试了ViRCAST。我们的实验表明,具有云和触觉集成的WebRTC是基于VR的手术模拟器的可行解决方案。从我们的实验来看,WebRTC集成仿真产生了33fps的平均帧速率,并且硬件集成实时产生0.7毫秒的平均滞后。
    Web Real-Time Communication (WebRTC) is an open-source technology which enables remote peer-to-peer video and audio connection. It has quickly become the new standard for real-time communications over the web and is commonly used as a video conferencing platform. In this study, we present a different application domain which may greatly benefit from WebRTC technology, that is virtual reality (VR) based surgical simulations. Virtual Rotator Cuff Arthroscopic Skill Trainer (ViRCAST) is our testing platform that we completed preliminary feasibility studies for WebRTC. Since the elasticity of cloud computing provides the ability to meet possible future hardware/software requirements and demand growth, ViRCAST is deployed in a cloud environment. Additionally, in order to have plausible simulations and interactions, any VR-based surgery simulator must have haptic feedback. Therefore, we implemented an interface to WebRTC for integrating haptic devices. We tested ViRCAST on Google cloud through haptic-integrated WebRTC at various client configurations. Our experiments showed that WebRTC with cloud and haptic integrations is a feasible solution for VR-based surgery simulators. From our experiments, the WebRTC integrated simulation produced an average frame rate of 33 fps, and the hardware integration produced an average lag of 0.7 milliseconds in real-time.
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  • 文章类型: Journal Article
    在工业4.0的背景下,制造计量学对于检测和测量机器至关重要。物联网(IoT)技术通过本地和云计算服务器实现先进工业设备之间的无缝通信。本研究调查了使用MQTT协议通过OpenCV增强云服务器和圆孔数据源之间的圆度测量数据传输的性能。准确检查圆形特性,特别是圆度误差,对润滑剂的分配至关重要,组件,和旋转力创新。圆度测量技术采用诸如最小区域圆公差算法之类的算法。视觉检测系统,利用图像处理技术,可以通过圆形尺寸分析对模型的表面进行分析,及时准确地检测质量问题。这涉及到将模型的图像发送到计算机,它采用了霍夫变换等技术,边缘检测,和轮廓分析来识别圆形特征并提取相关参数。该方法用于照相机工业和部件组装。为了评估性能,在各种行业中广泛使用的基于非接触式的3SMVI系统和基于接触式的CMM系统之间进行了比较实验,以进行圆度评估。CMM技术以其高精度而闻名,但耗时。实验结果表明两种方法之间的变化为5至9.6微米。建议使用高分辨率相机和适当的照明条件可以进一步提高结果精度。
    In the context of Industry 4.0, manufacturing metrology is crucial for inspecting and measuring machines. The Internet of Things (IoT) technology enables seamless communication between advanced industrial devices through local and cloud computing servers. This study investigates the use of the MQTT protocol to enhance the performance of circularity measurement data transmission between cloud servers and round-hole data sources through Open CV. Accurate inspection of circular characteristics, particularly roundness errors, is vital for lubricant distribution, assemblies, and rotational force innovation. Circularity measurement techniques employ algorithms like the minimal zone circle tolerance algorithm. Vision inspection systems, utilizing image processing techniques, can promptly and accurately detect quality concerns by analyzing the model\'s surface through circular dimension analysis. This involves sending the model\'s image to a computer, which employs techniques such as Hough Transform, Edge Detection, and Contour Analysis to identify circular features and extract relevant parameters. This method is utilized in the camera industry and component assembly. To assess the performance, a comparative experiment was conducted between the non-contact-based 3SMVI system and the contact-based CMM system widely used in various industries for roundness evaluation. The CMM technique is known for its high precision but is time-consuming. Experimental results indicated a variation of 5 to 9.6 micrometers between the two methods. It is suggested that using a high-resolution camera and appropriate lighting conditions can further enhance result precision.
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