工业射线照相影像质量评价  

Image Quality Evaluation of Industrial Radiography

作　　者：李衍[1] 

机构地区：[1]无锡华光锅炉股份有限公司

出　　处：《影像技术》2002年第3期31-34,共4页Image Technology

摘　　要：射线照相影像质量对保证工业射线无损探伤检测的可靠性和有效性具有重要意义。本文概述射线照相影像质量三要素—对比度,不清晰度和颗粒度的涵义,并重点介绍像质核心———射线照相三维灵敏度(对比灵敏度、细节灵敏度和裂纹灵敏度)的评价方法。本文分六个部分:1.概述;2.射线照相对比度;3.射线照相清晰度;4.颗粒性和颗粒度;5.信噪比;6.射线照相灵敏度。本期刊登其1和2两部分,其他部分将在以后各期陆续刊出。Radiographic image quality(IQ)is of great importance to the assuran ce of the reliability and effectiness of radiographic NDT.This article outl ines the meaning of the three major IQ factors,i.e.contrast,unsharpness and granularity,and introduces in deta il methods for evaluation the nucleu s of image quality:triple sensitivity of radio-graphy,i.e.contrast sensitivity,detail sensitivity and crack sensitivity.This article contains six parts:1.I ntroduction,2.Radiography Contra st,3.Radiography Sharpness,4.Graininess and Granularity,5.Si gnal Noise Ratio.6.Radiography Sen sitivity.Part 1and part 2will be included in this numero,other parts will be publ ished successively in the forthcomi ng numeros.

关 键 词：对比度 不清晰度 颗粒度 对比灵敏度 细节灵敏度 裂纹灵敏度 无损探伤工业射线照相 影像质量 评价 

分 类 号：TB867[一般工业技术—摄影技术] TH878.1[机械工程—仪器科学与技术]