共查询到20条相似文献,搜索用时 46 毫秒
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数字万用表是大多数企业普遍常用的计量工具,常规传统校准一个数字万用表全部功能需花去0.5~1h。为了提高效率,节省时间和繁琐的重复工作,校准装置通过计算机来控制标准源的输出,用摄像头将数字万用表的数值图像采集到计算机中,用计算机进行图像数字识别,识别结果记录到Excel表格中,从而完成整个数字万用表的校准工作。 相似文献
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在光电混合联合变换相关器图像识别系统中,对与参考图像完全相同的真目标图像和不同的假目标图像能实现完全识别,但对于与参考图像间存在旋转和比例变化的目标图像却很难识别,甚至无法识别。由此,提出了基于图像质心和最长边的归一化图像处理新算法:根据图像像素总值求取图像质心,根据质心和图像边缘轮廓点之间的长度求出图像的最长边和旋转角度,然后根据统一标准将目标图像和参考图像调整至同一长度和旋转方向的完全相同的图像。最后给出了模拟和实验的相关结果,结果表明,该方法能实现存在旋转和比例变化的图像的畸变不变处理,从而提高了系统的识别能力。 相似文献
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目的 基于图像识别和结构改进对嘴棒发射机运行中产生的横滤嘴棒进行智能剔除、识别和预警,以提高生产效率。方法 采集滤嘴棒侧面运输图像,对异常图像进行追踪,从中提取异常滤嘴棒特征点,基于图像生成警示信息,同时对滤嘴棒发射机输送轨道背板进行结构优化,能剔除大部分横滤嘴棒。结果 改进后的模拟样机,经过输送轨道背板的横滤嘴棒的剔除率高达约77%,其余异常横滤嘴棒被及时预警,嘴棒发射机的管道卡堵概率降低约60%,设备运行效率显著提高。结论 图像识别和结构改进能有效识别预警和剔除嘴棒发射机运行中产生的横滤嘴棒。 相似文献
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文章首先就铁路工作环境中监控系统以及图像识别技术的应用意义做出了必要说明,而后对当前应用领域中的图像识别技术原理和主流技术做出了相应阐述。 相似文献
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本文研究的是一套通过干涉显微镜成像,利用CCD相机提取干涉条纹进行图像识别和处理,实现高精度工件表面粗糙度快速、非接触、自动化的检测系统。该系统在干涉显微镜的结构基础上,安装了CCD相机,将干涉图像采集到计算机中,然后对采集到的图像进行滤波、判别、二值化处理、提取边缘轮廓,并按照GB/T 1031-2009《产品几何技术规范(GPS)表面结构轮廓法表面粗糙度参数及其数值》的要求进行计算,得到被测工件的表面粗糙度。经实验验证,该检测系统满足Ra值(0.01~0.1)μm和Rz值(0.1~1.0)μm测量要求,适用于高精度工件的表面粗糙度测量。 相似文献
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神经网络在二维图像识别中的应用 总被引:5,自引:0,他引:5
本文提出了一种基于神经网络的二维图像识别技术。选取一组机械零件的二维图像,对每张图像进行放缩和旋转变换,并分析、提取对应图像的nmi特征和7个不变矩特征作为BP网络的输入样本,图像的二进制编号为输出样本构建BP神经网络。并对网络进行抗干扰训练,使网络对理想输入及带噪声的输入均有较好的识别率。实验证明该网络具有一定的工程实用性。 相似文献
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In order to improve face recognition accuracy, we present a simple near-infrared (NIR) and visible light (VL) image fusion algorithm based on two-dimensional linear discriminant analysis (2DLDA). We first use two such schemes to extract two classes of face discriminant features of each of NIR and VL images separately. Then the two classes of features of each kind of images are fused using the matching score fusion method. At last, a simple NIR and VL image fusion approach is exploited to combine the scores of NIR and VL images and to obtain the classification result. The experimental results show that the proposed NIR and VL image fusion approach can effectively improve the accuracy of face recognition. 相似文献
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本文提出了一种基于在光学频谱面上进行光学高斯高通滤波的实时处理方法.此方法将一个高斯掩膜覆盖在位于光学频谱面上的CCD中心位置,从而明显降低了相关图像中自相关峰的高度和宽度.通过比较不同的参数效果,确定了一种用于实验的高斯函数滤波器.通过系列实验研究发现,本方法可以明显提高联合变换相关器的效果和速度. 相似文献
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打击破坏野生动物资源犯罪是森林警察的神圣职责。本文重点阐述如何利用图像识别技术鉴定犀牛角和豹皮的真伪、狮子的种属及相关法律,保护国家珍惜濒危野生动物。 相似文献
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D Dutta Majumder 《Sadhana》1986,9(2):139-156
It is well-known that one of the goals of research for the last two decades or so in pattern recognition and its sub-areas,
such as processing, analysis and understanding of image, speech and natural language, and computer vision techniques etc.,
has always been to develop fundamental techniques for flexible interactive intelligent man-machine interfaces for computers.
In this paper, the author tries to argue that for the evolution of fifth generation computer systems (FGCS) as defined by
Japanese scientists, some of the things required are realisation and implementation of the advances in pattern recognition
and its sub-areas, not only to achieve the man-machine interface with a natural mode of communication, but also for the realisation
of the basic mechanisms of inference, association and learning, which are inherent both in pattern recognition and in the
core functions of FGCS. The next generation computers will be knowledge-based systems, which form a subdomain of artificial
intelligence (a1) techniques, and soa1 provides the essential link between pattern recognition domains and different application systems. No attempt is made to
discuss other essential conceptual building blocks, such as software engineering, computer architecture and very large scale
integration technology unless these become very relevant in the discussions of concerned topics of the paper. A section on
limitations of perception, learning and knowledge for computing machines is also included.
This work was funded by the Knowledge-based Computer Systems Project of the Department of Electronics, Government of India. 相似文献
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基于卷积神经网络模型的遥感图像分类 总被引:2,自引:0,他引:2
研究了遥感图像的分类,针对遥感图像的支持向量机(SVM)等浅层结构分类模型特征提取困难、分类精度不理想等问题,设计了一种卷积神经网络(CNN)模型,该模型包含输入层、卷积层、全连接层以及输出层,采用Soft Max分类器进行分类。选取2010年6月6日Landsat TM5富锦市遥感图像为数据源进行了分类实验,实验表明该模型采用多层卷积池化层能够有效地提取非线性、不变的地物特征,有利于图像分类和目标检测。针对所选取的影像,该模型分类精度达到94.57%,比支持向量机分类精度提高了5%,在遥感图像分类中具有更大的优势。 相似文献
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设计了一种基于FPGA与DDR2SDRAM的图像采集显示系统,该系统采用Xilinx公司Spartan-6系列的FPGA作为主控芯片,利用高带宽数据、大容量的DDR2SDRAM存储器实时地对CMOS数字图像传感器OV7670图像数据进行缓存,最后图像数据通过TFT LCD液晶显示屏实时显示出来.实验结果表明,设计并实现的图像采集系统不仅运行稳定,而且图像显示效果较好. 相似文献
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Ahmet Nusret Toprak;Ibrahim Aruk; 《International journal of imaging systems and technology》2024,34(5):e23180
Skin cancer is a significant public health issue, making accurate and early diagnosis crucial. This study proposes a novel and efficient hybrid deep-learning model for accurate skin cancer diagnosis. The model first employs DeepLabV3+ for precise segmentation of skin lesions in dermoscopic images. Feature extraction is then carried out using three pretrained models: MobileNetV2, EfficientNetB0, and DenseNet201 to ensure balanced performance and robust feature learning. These extracted features are then concatenated, and the ReliefF algorithm is employed to select the most relevant features. Finally, obtained features are classified into eight categories: actinic keratosis, basal cell carcinoma, benign keratosis, dermatofibroma, melanoma, melanocytic nevus, squamous cell carcinoma, and vascular lesion using the kNN algorithm. The proposed model achieves an F1 score of 93.49% and an accuracy of 94.42% on the ISIC-2019 dataset, surpassing the best individual model, EfficientNetB0, by 1.20%. Furthermore, the evaluation of the PH2 dataset yielded an F1 score of 94.43% and an accuracy of 94.44%, confirming its generalizability. These findings signify the potential of the proposed model as an expedient, accurate, and valuable tool for early skin cancer detection. They also indicate combining different CNN models achieves superior results over the results obtained from individual models. 相似文献