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gray images
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  灰度图像
    The main content are as follows:(1) 5 typical PD defect models are designed. According to the analysis of testing method, it acquires data, constructs gray images and analyzes the discrepancy between different discharge images.
    本文的主要内容有:(1)设计制作了五种人工油纸绝缘缺陷放电模型,通过模型试验获得了局部放电样本数据,构造了局部放电灰度图像,分析了不同模式的局部放电灰度图像的差异;
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    (2) Entropy, standard deviation, mean absolute deviation of the PD gray images are extracted and the acquired characteristics are analyzed for five types of discharge pattern recognition.
    (2)研究了根据局部放电灰度图像光谱特征提取熵、标准差和平均绝对误差等三个统计特征的方法,对五类放电图像的统计特征计算结果进行了分析;
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  gray images
The Gray images of such negacyclic codes over Z4 are also determined under the Gray map.
      
Differently from well known inpainting applications for the recovery of gray images, the proposed techniques apply to color images embedding blanks where only gray level information is given.
      
In this paper, we describe authentication codes via (generalized) Gray images of suitable codes over Galois rings.
      
A quick neural network for computer vision of gray images
      
The paper aims at designing a novel scheme for sensory data fusion by a mobile robot for reconstructing its 3-D world from their multiple gray images.
      
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Image display processing for the analysis software system of pipeline inspected MFL dada is described primarily in this paper.Curve image display is directly generated by converting MFL data to a certain point of the screen.Gray image display is drawn by the gray scale of MFL data.After gray image is generated,the gray image is processed by some methods of image enhancement such as interpolation,sharp and smooth etc.The result of programming and testing is proved that...

Image display processing for the analysis software system of pipeline inspected MFL dada is described primarily in this paper.Curve image display is directly generated by converting MFL data to a certain point of the screen.Gray image display is drawn by the gray scale of MFL data.After gray image is generated,the gray image is processed by some methods of image enhancement such as interpolation,sharp and smooth etc.The result of programming and testing is proved that the curve display can describe the real change of the MFL data,and the processed gray image is rather ideal.The information of pipeline characters is shown more vividly and clearly.The quality of data analysis is improved.

本文主要介绍了管道漏磁检测数据的软件分析处理系统中的图形化显示部分。曲线图形直接采用将数据转化为屏幕上一点的方法进行显示;灰度图形先将数据转化为相应的灰度值,再根据灰度值画出初步的灰度图,然后利用插值和图像滤波(平滑)、锐化等图像增强手段进行处理。经过编程测试,曲线图形较好地表现了数据变化的真实性,灰度图的效果也较为理想,管道的特征信息显示更为形象、直观,提高了数据分析的质量。

Based on the analysis of defect in oil-paper insulation of transformer,5 corresponding PD models were made to simulate the actual defects existed in transformers.Aging experiment was carried out at different temperature and test voltage.The developing process of different types of PD was studied and the influence of temperature and voltage on PD in oil-paper insulation. were analyzed.Gray images show differences for different typrs of PD or one type of PD at different precedures.Gray images can be...

Based on the analysis of defect in oil-paper insulation of transformer,5 corresponding PD models were made to simulate the actual defects existed in transformers.Aging experiment was carried out at different temperature and test voltage.The developing process of different types of PD was studied and the influence of temperature and voltage on PD in oil-paper insulation. were analyzed.Gray images show differences for different typrs of PD or one type of PD at different precedures.Gray images can be used to recognize PD patterns and discharge stage.The research resalts coutribute for further research on PD pattern recognition and insulation aging of transformer.

根据对变压器油纸绝缘内部常见缺陷的分析,制作了5种油纸绝缘缺陷放电模型,并在不同温度和电压下进行老化实验,用以模拟变压器中的实际缺陷.研究了不同类型放电的发展过程,分析了温度和电压对油纸绝缘局部放电的影响.对应于不同类型的放电和同一放电模型的不同放电阶段,放电的灰度图谱都存在较大差异,因此,可以通过灰度图谱来区分不同的放电类型和放电阶段.所得结果为进一步研究变压器局部放电模式识别和绝缘老化特征提供了实验依据.

Discreteness between image elements make the continuous gray image discrete when using CCD as the detecting device of Hartmann-Shack wavefront sensor,which will influence the accuracy of wavefront sensing.So the polynomial interpolation applied to light spot image is presented,which can improve the detecting precision of spot by reducing the discreteness of image and noise.Computer simulation and experimental results show that bi-cubic interpolation can greatly improve the wavefront sensing...

Discreteness between image elements make the continuous gray image discrete when using CCD as the detecting device of Hartmann-Shack wavefront sensor,which will influence the accuracy of wavefront sensing.So the polynomial interpolation applied to light spot image is presented,which can improve the detecting precision of spot by reducing the discreteness of image and noise.Computer simulation and experimental results show that bi-cubic interpolation can greatly improve the wavefront sensing accuracy,also,the suitable interpolating density can decrease processing time of computer.The bi-cubic interpolation applied to light spot image offer a valuable reference to the wavefront sensing in real research..

哈特曼-夏克波前传感器通常采用CCD相机作为探测器件,CCD像元之间的离散性,导致连续灰度图像被抽样成离散图像.文章提出用多项式插值对光斑图进行插值处理来降低图像灰度的离散度,可以平滑光斑图噪声,提高光斑阵列的探测精度,从而提高波前探测精度.仿真和实验结果证明,双立方插值方法很大程度上提高了波前探测的精度,选取合适的插值密度可以减小计算机处理时间.光斑图插值处理的研究为在实验中提高波前探测精度提供了有益的参考。

 
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