基于预浸纱自动铺放缺陷的分割算法

为保证预浸纱自动铺放成型制件的性能,基于图像处理技术,根据预浸纱表面图像沿纤维方向灰度均匀的特性,提出了一种结合灰度补偿和差影分割的缺陷分割算法。利用图像灰度补偿矩阵对图像进行灰度补偿,依据图像的灰度误差服从正态分布的特点剔除图像矩阵中的极大误差点,并建立标准背景图像,以允许差值系数K作为判据进行差影分割。结果表明：该算法对气泡、异物两种典型铺放缺陷分割效果好、速度快,为实现自动铺放缺陷在线监测提供了良好的理论基础。...

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Bibliographic Details
Published in航空材料学报 Vol. 37; no. 2; pp. 21 - 27
Main Author 蔡志强 肖军 文立伟 王东立 吴瑶平
Format Journal Article
LanguageChinese
Published 南京航空航天大学 材料科学与技术学院,南京,210016 2017
Subjects
差影算法
灰度补偿
缺陷检测
自动铺丝
质心分割
灰度补偿
gray compensation
defect detection
自动铺丝
segmentation of mass centroid
差影算法
automated fiber placement
质心分割
缺陷检测
subtraction algorithm
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ISSN1005-5053
DOI10.11868/j.issn.1005-5053.2016.000157

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Summary:为保证预浸纱自动铺放成型制件的性能,基于图像处理技术,根据预浸纱表面图像沿纤维方向灰度均匀的特性,提出了一种结合灰度补偿和差影分割的缺陷分割算法。利用图像灰度补偿矩阵对图像进行灰度补偿,依据图像的灰度误差服从正态分布的特点剔除图像矩阵中的极大误差点,并建立标准背景图像,以允许差值系数K作为判据进行差影分割。结果表明：该算法对气泡、异物两种典型铺放缺陷分割效果好、速度快,为实现自动铺放缺陷在线监测提供了良好的理论基础。
Bibliography:automated fiber placement ; defect detection ; gray compensation ; segmentation of mass centroid ; subtraction algorithm
11-3159/V
CAI Zhiqiang, XIAO Jun, WEN Liwei, WANG Dongli, WU Yaoping（College of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China）
In order to ensure the performance of the automated fiber placement forming parts, according to the homogeneity of the image of the prepreg surface along the fiber direction, a defect segmentation algorithm which was the combination of gray compensation and substraction algorithm based on image processing technology was proposed. The gray compensation matrix of image was used to compen-sate the gray image, and the maximum error point of the image matrix was eliminated according to the characteristics that the gray error obeys the normal distribution. The standard image was established, using the allowed deviation coefficient K as a criterion for substrac-tion segmentation. Experiments show that the algorith
ISSN:1005-5053
DOI:10.11868/j.issn.1005-5053.2016.000157