摘要
在目前的轮毂X射线成像系统中,常采用的图像显示算法为窗位窗宽算法,此算法操作过程繁琐,效率不高,不能同时还原图像的各部分细节,图像显示质量较差.鉴于此,本文借鉴HDR色调映射技术,提出了基于梯度域引导滤波的分层色调映射算法,利用梯度域引导滤波器进行图像分层,然后对基础层进行自适应对数压缩,对细节层进行补偿,最后将图像合并输出,使高动态范围图像在普通显示屏上显示效果更优.实验结果表明,本文算法还原了图像细节信息,提高了图像对比度和清晰度,产生了较好的视觉效果.
In the current hub X-ray imaging system,the commonly used image display algorithm is the window level and window width algorithm.This algorithm is cumbersome in operation and inefficient,and cannot restore the details of each part of the image at the same time,and the image display quality is resulting in poor image display quality.In view of this,this paper draws on HDR tone mapping technology,proposes a layered tone mapping algorithm based on gradient domain guidance filtering,uses the gradient domain guidance filter to layer image,and then compresses the base layer with adaptive logarithmic function and compensate the detail layer,and finally the images are combined and output,so that the high dynamic range image is better displayed on the ordinary display screen.Experimental results show that the algorithm restores image detail information,improves image contrast and sharpness,and produces better visual effects.
作者
焦腾云
王明泉
张俊生
郭智杰
王玉
JIAO Tengyun;WANG Mingquan;ZHANG Junsheng;GUO Zhijie;WANG Yu(Key Laboratory of Instrumentation Science&Dynamic Measurement of Ministry of Education,North University of China,Taiyuan 030051,China)
出处
《测试技术学报》
2019年第5期412-417,共6页
Journal of Test and Measurement Technology
基金
国家重大科学仪器设备开发专项资助项目(2013YQ240803)
山西省重点研发计划资助项目(201803D121069)
山西省应用基础研究项目面上自然基金资助项目(201801D121162)
