全文获取类型
收费全文 | 255篇 |
免费 | 48篇 |
国内免费 | 54篇 |
专业分类
电工技术 | 8篇 |
综合类 | 39篇 |
化学工业 | 4篇 |
金属工艺 | 2篇 |
机械仪表 | 29篇 |
建筑科学 | 3篇 |
矿业工程 | 5篇 |
轻工业 | 7篇 |
水利工程 | 2篇 |
石油天然气 | 2篇 |
武器工业 | 3篇 |
无线电 | 52篇 |
一般工业技术 | 15篇 |
冶金工业 | 2篇 |
自动化技术 | 184篇 |
出版年
2024年 | 3篇 |
2023年 | 2篇 |
2022年 | 7篇 |
2021年 | 6篇 |
2020年 | 14篇 |
2019年 | 11篇 |
2018年 | 5篇 |
2017年 | 11篇 |
2016年 | 14篇 |
2015年 | 11篇 |
2014年 | 20篇 |
2013年 | 15篇 |
2012年 | 20篇 |
2011年 | 29篇 |
2010年 | 24篇 |
2009年 | 21篇 |
2008年 | 30篇 |
2007年 | 32篇 |
2006年 | 25篇 |
2005年 | 16篇 |
2004年 | 15篇 |
2003年 | 7篇 |
2002年 | 7篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
排序方式: 共有357条查询结果,搜索用时 15 毫秒
1.
2.
Yu-Ting Pai Author VitaeAuthor Vitae Shanq-Jang Ruan Author Vitae 《Pattern recognition》2010,43(9):3177-3187
Document image binarization involves converting gray level images into binary images, which is a feature that has significantly impacted many portable devices in recent years, including PDAs and mobile camera phones. Given the limited memory space and the computational power of portable devices, reducing the computational complexity of an embedded system is of priority concern. This work presents an efficient document image binarization algorithm with low computational complexity and high performance. Integrating the advantages of global and local methods allows the proposed algorithm to divide the document image into several regions. A threshold surface is then constructed based on the diversity and the intensity of each region to derive the binary image. Experimental results demonstrate the effectiveness of the proposed method in providing a promising binarization outcome and low computational cost. 相似文献
3.
4.
在一些运动目标检测过程中,需要自动判断是否检测到运动目标,虽然在场景中没有出现运动目标,检测结果却错误的判断为检测到了运动目标.为了找到这个错误的根源,通过实验,发现了光流扰动效应,并且设计了光流扰动效应检测算法,清晰地检测出了光流扰动效果.接下来,通过图像二值化方式,消除了光流扰动效应,避免了运动目标误判现象,得到了理想的运动目标检测结果.研究证明在空间中存在光流扰动效应,该效应会对运动目标检测造成干扰,消除光流扰动效应,可提高了运动目标检测与判断的准确度和可靠度. 相似文献
5.
An adaptive local binarization method for document images based on a novel thresholding method and dynamic windows 总被引:1,自引:0,他引:1
Bilal Bataineh Siti Norul Huda Sheikh Abdullah Khairuddin Omar 《Pattern recognition letters》2011,32(14):1805-1813
Binary image representation is essential format for document analysis. In general, different available binarization techniques are implemented for different types of binarization problems. The majority of binarization techniques are complex and are compounded from filters and existing operations. However, the few simple thresholding methods available cannot be applied to many binarization problems. In this paper, we propose a local binarization method based on a simple, novel thresholding method with dynamic and flexible windows. The proposed method is tested on selected samples called the DIBCO 2009 benchmark dataset using specialized evaluation techniques for binarization processes. To evaluate the performance of our proposed method, we compared it with the Niblack, Sauvola and NICK methods. The results of the experiments show that the proposed method adapts well to all types of binarization challenges, can deal with higher numbers of binarization problems and boosts the overall performance of the binarization. 相似文献
6.
7.
以Visual C++6.0作为软件开发平台,以开源的OpenCV作为辅助的图像处理库,组建系统的硬件系统,实现了对工业自动生产线上的零件图像的采集和处理.该系统能对不同颜色的零件进行识别,为后续零件的筛选和分类奠定了基础.实验证明,采用机器视觉对零件颜色进行在线识别,不但检测精度高,而且能够满足生产线上实时性的要求. 相似文献
8.
Efthimios Badekas Nikos Nikolaou Nikos Papamarkos 《International journal of imaging systems and technology》2006,16(6):262-274
This article presents a new method for the binarization of color document images. Initially, the colors of the document image are reduced to a small number using a new color reduction technique. Specifically, this technique estimates the dominant colors and then assigns the original image colors to them in order that the background and text components to become uniform. Each dominant color defines a color plane in which the connected components (CCs) are extracted. Next, in each color plane a CC filtering procedure is applied which is followed by a grouping procedure. At the end of this stage, blocks of CCs are constructed which are next redefined by obtaining the direction of connection (DOC) property for each CC. Using the DOC property, the blocks of CCs are classified as text or nontext. The identified text blocks are binarized properly using suitable binarization techniques, considering the rest of the pixels as background. The final result is a binary image which contains always black characters in white background independently of the original colors of each text block. The proposed document binarization approach can also be used for binarization of noisy color (or gray‐scale) document images. Several experiments that confirm the effectiveness of the proposed technique are presented. © 2007 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 16, 262–274, 2006 相似文献
9.
胡超群 《计算机应用与软件》1998,15(1):29-32,36
本文提出了一种新的动态二值化算法,以实现从灰度点阵图象中提取其对象。通过分析象素和其所在的局部区和灰度值等数字特征,可以判断局部区的内是否存在对象,阈值和判断条件对应。 相似文献
10.
以往采用统计能量法和虚拟模态综合法预测在轨环境,存在预测精准度低的问题,为了避免传统方法带来的弊端,提出了基于OTSU二值化的航天器在轨环境预测方法。使用单目视觉光学测量法测量航天器所在位置,设计三圆靶,采用亚像素处理方法获取航天器像素版图。推导出像素灰度值以及域灰度值出现频数,引入萤火虫算法进行OTSU二值化图像分割。采用三角形网格模型,以航天器在轨特性为基准生成一个二值化子图,调用宽度优先搜索算法获取最初近似最短路径。取出子图中的边,再进行细分处理,生成子图点集,将子集中的各点连接成线,得到像素点间最短路径,实现航天器在轨环境预测。由结构动力学实验结果可知,该方法所捕获的冲击响应谱与实际获取的冲击响应谱最大误差为100g,而传统方法最大误差为400 g,由此说明基于OTSU二值化方法预测精准度较高,为航天器实际运行条件制定提供了参考。 相似文献