基于小波融合的射线图像增强算法*

提出一种基于小波融合的射线图像增强算法，利用射线成像的特点，对射线成像系统采集信号作分段灰度变换，将变换得到的多幅图像利用小波变换进行图像融合，以增强射线图像的显示效果。融合中采用低频图像的小波系数均值作为融合后的低频系数，高频图像根据梯度和一致性检测确定融合规则，调整高频小波系数大小，很好地将来自不同图像的特征与细节融合在一起，并对融合图像质量进行了对比评价。实验结果表明，这种方法能够在保留图像微小细节方面获得满意的结果，且优于传统的射线图像增强方法。

Radiographic image enhancement algorithm based on wavelet fusion

This paper proposed a radiographic image enhancement algorithm based on wavelet fusion.According to the collection signal's character of radiography,the approach maped the subsection of signal to 0~255 to form several gray images and then fused these images to form a new enhanced image.In the fusing process,adopted average of low-frequency image wavelet coefficients as the fusion low-frequency image wavelet coefficients.High-frequency image fusion rules were based on maximum gradient and consistency check a...