共查询到19条相似文献,搜索用时 93 毫秒
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分析了机器视觉技术发展现状及未来趋势,设计了一种基于机器视觉技术的产品瑕疵识别系统,通过图像采集模块采集待检产品视觉图像,通过专用控制器对图像进行处理,最终识别出瑕疵产品。 相似文献
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机器视觉技术在社会各行业生产和检测中的应用越来越多,那么对于机器视觉系统采集到得图像的真实性的要求也就越高,本文利用图像坐标使图像翻转产生投影,并在该算法的基础上利用图像的渐变透明度提高图像的真实性,算法本身的复杂度非常低,大大提高了程序的运行速度,使得机器视觉技术采集的图像处理得更快更具真实效果。 相似文献
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基于图像建模技术研究综述与展望 总被引:17,自引:3,他引:17
基于图像建模技术是计算机图形学和计算机视觉领域共同关心的重要问题.文中侧重从计算机图形学的研究角度对基于图像建模技术进行了综述,介绍了近年来提出的典型的基于图像建模方法及其最新研究进展,给出了这些方法的基本原理并加以分析比较,最后对基于图像建模技术的未来研究给出了一些建议。 相似文献
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Design and application of industrial machine vision systems 总被引:2,自引:0,他引:2
In this paper, the role and importance of the machine vision systems in the industrial applications are described. First understanding of the vision in terms of a universal concept is explained. System design methodology is discussed and a generic machine vision model is reported. Such a machine includes systems and sub-systems, which of course depend on the type of applications and required tasks. In general, expected functions from a vision machine are the exploitation and imposition of the environmental constraint of a scene, the capturing of the images, analysis of those captured images, recognition of certain objects and features within each image, and the initiation of subsequent actions in order to accept or reject the corresponding objects. After a vision system performs all these stages, the task in hand is almost completed. Here, the sequence and proper functioning of each system and sub-systems in terms of high-quality images is explained. In operation, there is a scene with some constraint, first step for the machine is the image acquisition, pre-processing of image, segmentation, feature extraction, classification, inspection, and finally actuation, which is an interaction with the scene under study. At the end of this report, industrial image vision applications are explained in detail. Such applications include the area of automated visual inspection (AVI), process control, parts identification, and important role in the robotic guidance and control. Vision developments in manufacturing that can result in improvements in the reliability, in the product quality, and enabling technology for a new production process are presented. The key points in design and applications of a machine vision system are also presented. Such considerations can be generally classified into the six different categories such as the scene constraints, image acquisition, image pre-processing, image processing, machine vision justification, and finally the systematic considerations. Each aspect of such processes is described here and the proper condition for an optimal design is reported. 相似文献
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文本是计算机视觉的许多应用中的一项重要特征。大量复杂图像文本的应用,使图像文本分析技术成为研究的新方向。图像文本分析技术和通常的文档图像分析技术之间有着紧密的联系;但是图像文本其自身所具有的特性,又使得图像文本分析技术具有不同于一般的文档图像分析的更加丰富的内容。我们将图像文本分析技术划分为三大组成部分:图像文本定位、图像文本的预处理和图像文本的识别进行讨论。最后,本文也对图像文本分析技术的应用进行了讨论。 相似文献
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计算机视觉与机器学习技术在三维人体动画中的应用综述 总被引:1,自引:0,他引:1
近年来计算机视觉与机器学习技术广泛应用于三维人体动画领域中.基于图像/视频的人体运动数据获取技术、数字角色和场景建模、交互式角色动画控制与运动生成等方面都大量应用了计算机视觉技术;同时,机器学习理论在三维人体运动数据重用以及后期智能角色动画创作中扮演了越来越重要的角色,并得到一些很好的研究成果.文中以三维人体动画创作流程为主线对这些方法的基本思想和关键技术进行了归纳与分析,并讨论了三维人体动画制作技术的发展趋势. 相似文献
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We develop a framework for learning generic, expressive image priors that capture the statistics of natural scenes and can
be used for a variety of machine vision tasks. The approach provides a practical method for learning high-order Markov random
field (MRF) models with potential functions that extend over large pixel neighborhoods. These clique potentials are modeled
using the Product-of-Experts framework that uses non-linear functions of many linear filter responses. In contrast to previous
MRF approaches all parameters, including the linear filters themselves, are learned from training data. We demonstrate the
capabilities of this Field-of-Experts model with two example applications, image denoising and image inpainting, which are implemented using a simple, approximate
inference scheme. While the model is trained on a generic image database and is not tuned toward a specific application, we
obtain results that compete with specialized techniques.
The work for this paper was performed while S.R. was at Brown University. 相似文献
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随着国内工业机器人行业的高速发展,智能装备也开始应用于工程实践项目中。机器视觉作为机器人的眼睛,近年来取得了令人瞩目的发展,正广泛地应用于各种工况监视、成品检验和质量控制领域。系统主要以碗碟餐具的分拣作为研究对象,采用美国NI公司开发的LabVIEW软件作为开发环境,通过调用视觉开发工具包IMAQ Vision及Vision Assistant丰富的专业化控件和函数库,针对碗碟分类的特殊条件,设计出一套方便易用,且同时集成 图像采集、图像处理、视觉检测、决策判断的完整的机器视觉应用系统。基于LabVIEW的机器视觉系统的应用实现了碗碟分拣,解决了实际应用中的一些问题,为进一步的研究开发奠定了较好的基础。该系统的设计大大提高了餐具分类的准确率与效率。 相似文献
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主要介绍了基于机器视觉检测技术在五金件检测系统中的应用,系统控制步进马达旋转,带动料带式的五金件前进,通过视觉成像装置(工业相机、镜头、光源)将产品形状转化为图像信号并传输到系统,系统进行图像处理,提取出需要产品轮廓并计算其尺寸数据。系统通过生产验证,取得良好的效果,具有一定的推广价值。 相似文献
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Improved AdaBoost-based image retrieval with relevance feedback via paired feature learning 总被引:2,自引:0,他引:2
Boost learning algorithm, such as AdaBoost, has been widely used in a variety of applications in multimedia and computer vision. Relevance feedback-based image retrieval has been formulated as a classification problem with a small number of training samples. Several machine learning techniques have been applied to this problem recently. In this paper, we propose a novel paired feature AdaBoost learning system for relevance feedback-based image retrieval. To facilitate density estimation in our feature learning method, we propose an ID3-like balance tree quantization method to preserve most discriminative information. By using paired feature combination, we map all training samples obtained in the relevance feedback process onto paired feature spaces and employ the AdaBoost algorithm to select a few feature pairs with best discrimination capabilities in the corresponding paired feature spaces. In the AdaBoost algorithm, we employ Bayesian classification to replace the traditional binary weak classifiers to enhance their classification power, thus producing a stronger classifier. Experimental results on content-based image retrieval (CBIR) show superior performance of the proposed system compared to some previous methods. 相似文献
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机器视觉关键技术与应用实例分析 总被引:4,自引:0,他引:4
本文简要介绍了有关机器视觉概念、系统的组成,并介绍了与机器视觉相关的关键技术,如照明光源、镜头、摄像机、图像采集卡、图像处理卡、集成式视觉组件等,最后扼要介绍了在工业检测、农产品分选、机器人导航等多个领域的应用实例. 相似文献
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图像深度提取是机器视觉的重要课题。本文研究了一种基于图像频域特征的深度恢复方法,对散焦图像以点扩散函数建立模糊程度与距离间的关系,以二维散焦图像频域局部特征为依据,通过取样窗口的恰当选择,提取深度信息。对采集图像的实验结果表明,该方法行之有效。 相似文献