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Pearson-correlation
在统计学中,皮尔逊积矩相关系数(英语:Pearson product-moment correlation coefficient,又称作 PPMCC或PCCs[1], 文章中常用r或Pearson s r表示)用于度量两个变量X和Y之间的相关(线性相关),其值介于-1与1之间。在自然科学领域中,该系数广泛用于度量两个变量之间的相关程度。它是由卡尔·皮尔逊从弗朗西斯·高尔顿在19世纪80年代提出的一个相似却又稍有不同的想法演变而来的。这个相关系数也称作“皮尔森相关系数r”。(In statistics, Pearson product-moment correlation coefficient (English: Pearson product-moment correlation coefficient, also known PPMCC or PCCs [1], the article used or Pearson s r r representation) is a measure of the two variables X and Y between correlation (linear correlation), a value between-1 and 1. In the natural sciences, the coefficient is widely used to measure the degree of correlation between the two variables. It is made a similar Karl Pearson Francis Galton in the 1880s but made a slightly different idea evolved. The correlation coefficient is also called Pearson s correlation coefficient r .)
- 2015-04-27 16:37:58下载
- 积分:1
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水体指数
利用matlab对多光谱遥感影像进行水体指数(ndwi)以及植被指数(ndvi)提取(Extraction of Water body Index (ndwi) and vegetation Index (ndvi) from Multispectral remote Sensing Images by matlab)
- 2020-11-04 09:49:51下载
- 积分:1
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1
说明: 图像分割指把图像分成各具特性的区域并提取出感兴趣目标的技术和过程,它是由图像处理到图像分析的关键步骤。小麦的图像分割是使用各种图像分割算法对小麦图像进行处理和研究,提取出有用的图像信息以实现小麦粘连籽粒的分离,为进一步利用图像处理技术分析小麦品质提供依据。因此,对小麦图像分割方法的研究具有十分重要的意义。
本文首先研究了图像分割算法的分类以及常用图像分割算法的基本原理。然后针对小麦图像的特点,研究了在不同光照、背景和连接情况下使用的小麦图像分割方法,对各种分割算法进行了比较、结合和改进。重点研究了基于小波变换的分水岭算法和阈值分割算法在小麦图像分割中的应用,并借助MATLAB工具软件对选定图像进行处理,实现了对小麦粘连籽粒的分离。最后本文对图像分割技术进行了展望。
本论文的研究对于图像分割技术在小麦品质中的应用具有一定的参考价值。
(Image segmentation is a technology and process that divide image into different character area, which is interesting us. It is a key step from image processing to image analyzing. The wheat image segmentation is a way using many algorithms does some research and processing, and it also can realize the separation of wheat adhesion and realize the extraction of useful image information. So it can lay the foundation for using image processing technologies to analysis the quality of the wheat. there is a very important meaning for the research of the image segmentation method.
This paper studies the class and the principle of segmentation algorithm in common use firstly, then, studies the wheat image segment algorithm with different illumination background. It contrasts kinds of algorithms, and improved them. This paper is based on wavelet transform, and combines with the watershed algorithm and the threshold segmentation method. Using the MATLAB software, does some process on the wheat i)
- 2009-10-21 11:25:02下载
- 积分:1
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edge
opencv c++将彩色图像转换为灰度图像进行边缘检测,(opencv c++ to convert color images to gray-scale image edge detection,)
- 2009-05-31 20:32:37下载
- 积分:1
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Kmeans_grayimage
简单的灰度图像的K均值聚类分割,Matlab实现(gray image segmentation using K-means clustering by matlab.)
- 2020-12-08 15:59:19下载
- 积分:1
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MARPH
对图像变形的一些基本算法的介绍和功能的描述等
(about marphing )
- 2010-11-17 18:21:25下载
- 积分:1
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Untitled
有效的实现车牌定位,车牌字符分割和车牌字符识别。(To achieve effective positioning plate, the vehicle registration license plate character segmentation and character recognition.)
- 2009-05-12 22:03:11下载
- 积分:1
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burns
该程序是发表在IEEE上的经典直线提取论文“Extracting Straight Lines”的源代码实现,对计算机视觉、模式识别和信息提取等领域的科学研究人员具有极其重要的参看意义。建议下载学习和适用。(The program is published in the IEEE paper on the classic straight-line extraction " Extracting Straight Lines" the source code implementation of computer vision, pattern recognition and information extraction and other areas of scientific researchers see an extremely important significance. Recommended to download to learn and to apply.)
- 2021-03-26 16:39:13下载
- 积分:1
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FFCM--all
用FCM 对自然图像 sar图像以及纹理图像进行快速分割 ,用一维和二维直方图分别对图像进行特征映射 从而快速的对图像进行分割 包含结果截图 (By FCM sar image of natural images quickly and texture image segmentation, with one-dimensional and two-dimensional histogram of the image feature maps were so fast image segmentation screenshot contains the results)
- 2013-05-28 11:03:58下载
- 积分:1
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gaussianba
使用特征差别提取,通过特征差别相减,以去除高斯背景(Using the characteristics of different extraction, the characteristics of different background subtraction, to remove Gauss)
- 2014-01-07 17:31:17下载
- 积分:1