中国医疗设备2017，Vol.32Issue(7)：51-55,5.DOI:10.3969/j.issn.1674-1633.2017.07.015
灰度图像校正在视网膜内源光信号探测中的应用
Application of Gray Image Level Correction in the Detection of Intrinsic Optical Signals in Retina
摘要
Abstract
Objective The image of intrinsic optical signals (IOSs) was preprocessed to eliminate the image position offset caused by the blink of the test eye and to reduce background noise caused by image gray level uneven. Methods We have adopted the normalized correlation coefficient of registration for image registration. Then, the gray linear transformation was used to obtain image gray scale correction. Finally we extracted IOSs of the macular area in retinal. Results Experimental results indicated that it could effectively improve the relative intensity of IOSs, trough amplitude was twice as high as the relative treatment (5% to 12%; 12% to 26%); in addition, we could observe more changes in signal details by improve the endogenous optical signal curve. Conclusion The results we get are similar to the results of existing literature. Thus, the method is effective and reliable, which lay a foundation for exploring signal physiology significance.关键词
光学成像/灰度处理/内源光信号/信号探测/视网膜Key words
optical imaging/gray scale/intrinsic optical signals/signal detection/retina分类
医药卫生引用本文复制引用
张洁瑞,郭学谦,马丽萍,侯钧杰,邵双运..灰度图像校正在视网膜内源光信号探测中的应用[J].中国医疗设备,2017,32(7):51-55,5.基金项目
北京市教育委员会科技计划一般项目(KM201610025010). （KM201610025010）
