X-ray image file of TIFF format proces

I have a large x-ray file of TIFF in the link. I want to process it more clarity. Expecially the link line in the image . I have do something. But it is not enough。 Will you give me some sugesstions. Thinks!

This is the result I did with opencv. One thing i would to say is that the x-ray file is grayimage with one channel.

https://www.kdocs.cn/l/cepRwoEycxj9