作者：张从华1, 杨勇1, 刘若凡1, 张宪亮1, 石敏2, 苏红雨1
作者单位：1. 中国测试技术研究院, 四川 成都 610021;
2. 无锡市计量测试中心, 江苏 无锡 214101
关键词：红外热成像; 边缘检测; 图像增强; 图像处理; 缺陷
摘要：
为分析红外热成像图像的基本特征,测试图像中缺陷的几何尺寸,将图形图像处理中的边缘检测技术和图像增强技术运用到红外图像处理分析中,便于图像客观分析和参数测试。简要介绍了红外热成像的基本原理、图像边缘检测的算子、图像增强方法,并设计了一个金属试件,采用红外加热分析试件的缺陷。图像处理结果表明:边缘检测和图像增强相结合,便于发现缺陷并准确测试缺陷,可为红外图像中的微弱信号的分析提供技术支持。
Application of graphic and image technology in infrared thermal imaging
ZHANG Cong-hua1, YANG Yong1, LIU Ruo-fan1, ZHANG Xian-liang1, SHI Min2, SU Hong-yu1
1. National Institute of Measurement and Testing Technology, Chengdu 610021, China;
2. Wuxi Measurement and Testing Center, Wuxi 214101, China
Abstract: In order to analyze the basic features of infrared thermal images and measure the sizes of their defects, the authors applied the techniques of graphic edge detection and image enhancement to analyze the infrared thermal image, orderly to facilitate image analysis and measure objective scale. This paper briefly presents the basic principles of infrared thermal imaging, image edge detection operator and image enhancement methods. One designed metal specimen is analyzed by using infrared thermal image to detect the defects. The results of the image-processing show that it is easy to find and measure defects accurately through combining edge detection with image enhancement technology, which is to provide technical support for the analysis of the weak signals in the infrared thermal image.
Keywords: infrared thermal imaging; edge detection; image enhancement; image processing; defect
2012, 38(2): 77-80 收稿日期: 2011-10-31;收到修改稿日期: 2012-1-5
基金项目: 国家科技支撑计划项目(2011BAI02B07)四川省青年科技基金项目(08ZQ026-073)
作者简介: 张从华(1973-),男,四川成都市人,博士,主要从事辐射物理与医学物理领域的计量测试研究工作。
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