滤光片在提高高温锻件图像对比度中的应用  

Application of Filters in Improvement of Image Contrast of Hot Forgings

作　　者：毕超[1] 曲兴华[2] 张洋[1] 徐昌语 刘勇[1] 

机构地区：[1]中航工业北京航空精密机械研究所,北京100076 [2]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《航空精密制造技术》2015年第1期1-4,共4页Aviation Precision Manufacturing Technology

基　　金：中航工业技术创新基金(2011F30324)资助项目

摘　　要：为了提高高温锻件的图像质量,采用数字滤光与物理滤光相结合的方法,通过数字滤光滤掉锻件图像的R分量,并把滤光片安装于彩色相机的镜头前,以实现物理滤光,采用图像对比度来评价其应用效果。本文在800~1200℃之间设置图像采样点,通过比较不同滤光片在不同采样点的图像对比度,确定滤光片的最优选择方案。实验结果表明：本文所提出的方法能够使各个温度范围内的热态锻件获得最优的图像对比度,图像质量得到显著提高。For the purpose of improving image quality of hot forgings, digital and physical filtering technologies are combined together. The R component of forging image is filtered out using digital filtering, while physical filtering is realized by installing color filters before lens of industry camera, whose application effect is evaluated by image contrast. The image contrast derived with different filters at different sample points set from 800℃ to 1200℃ is compared to determine the optimal scheme of filters to be selected. According to result of experiments, the optimal image contrast of forgings at different temperature is acquired and the image quality is improved through the method proposed.

关 键 词：高温锻件 图像对比度 物理滤光 数字滤光 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TG316.13[自动化与计算机技术—计算机科学与技术]