基于图像融合的竹塑复合材内部缺陷边缘检测研究
2019-06-07孙绩婷戚大伟
孙绩婷 戚大伟



摘要:竹塑复合材是一种新型的绿色环保材料,X射线无损检测系统,为其提供了一种行之有效的检测手段,但图像在获取的过程中极易受到环境和实验光线强度等变化所产生的噪声影响,为增强图像清晰程度,降低对图像的分割和边缘检测等处理的误差影响,本文提出基于图像融合的竹塑复合材内部缺陷边缘进行检测的方法。利用小波变换将多幅内部缺陷图像变换融合后,运用OTSU方法和Canny算子分别对其内部缺陷图像进行分割与边缘提取。结果表示,可以应用小波变换融合的方法对竹塑复合材内部缺陷边缘进行检测,对图像信息的进一步表达,具有一定的增强效果。
关键词:小波变换;竹塑复合材;X射线无损检测;图像分割;缺陷边缘检测
中图分类号:S781.1文献标识码:A文章编号:1006-8023(2019)03-0036-05
Detection of Internal Defect Image Edge of Bamboo Plastic
Composite Based on Image Fusion
SUN Jiting,QI Dawei*
(College of Science, Northeast Forestry University, Harbin 150040)
Abstract:Bamboo-plastic composite is a new type of green environmental protection material. X-ray non-destructive testing system provides an effective detection method. In order to enhance the image clarity and reduce the error effect on image segmentation and edge detection, the influence of noise caused by the change of light intensity in the experiment is improved. In this paper, a method based on image fusion to detect the internal defect edge of bamboo-plastic composite is proposed. After fusion of multiple internal defect images by wavelet transform, the OTSU method and Canny operator are used to segment and extract the edge of the internal defect images respectively. The results show that the wavelet transform fusion method can be used to detect the internal defect edge of bamboo-plastic composite, which has certain enhancement effect on the further expression of image information.
Keywords:Wavelet transformation; bamboo plastic composite; X-ray nondestructive testing; image segmentation; defect edge detection
0引言
近年來,塑料、再生塑料与天然纤维等合成的新型材料得到了广泛的重视与研究,可降解的竹塑复合材料更成为了有利于可持续发展和有利于生态环境良好发展的新兴材料之一[1-2]。对竹塑复合材料的研究基于我国竹材资源丰富,废旧塑料也可得到循环再利用等优势,能够起到一定程度上改善生态环境的作用。因此对其制备方式及所具有的主要性能和增强材料特性等方面仍然有大量学者进行研究[3-5]。然而却少有利用无损检测技术对其在不改变外部及其他任何特性的情况下,对竹塑复合材内部可能会出现的腐蚀、分层和裂缝等缺陷信息进行检测。……
