改进的直方图均衡化与双边滤波的X射线图像对比度增强算法

Improved Histogram Equalization and Bilateral Filtering X-Ray Image Contrast Enhancement Algorithm

针对传统技术在处理非等厚构件X射线图像时,易出现不同区域处理效果差别大、全局处理效果不均匀等的问题,提出一种X射线图像对比度增强算法.首先采用改进的直方图均衡化算法对X射线图像对比度增强,然后采用双边滤波抑制图像中的噪声,最后采用改进的基于摄影的全局色调映射方法,使动态范围较大的X射线图像可以在显示设备上清晰地显示.实验结果表明,该方法可以有效提高图像的对比度和清晰度.

When dealing with X-ray images of non-equal thickness components in the traditional technology,it was easy to have problems such as large difference in processing effects in different regions and uneven global processing effects.An improved X-ray image contrast enhancement method is proposed.Firstly,the improved histogram Equalization was used to enhance the X-ray image,and then the bilateral filtering was used to denoise the image.Finally,an improved photography-based global tone mapping method was adopted,so that the X-ray image with a large dynamic range can be displayed well on the display device.The experimental results show that this method can effectively improve the contrast and sharpness of the image.