How do you even out a wooden texture?
In the image below, the fence is all washed out in areas. I've been cloning parts of it to even it out, but it's tedious and I'm not getting the result I want. Is there a way to quickly even the whole texture/look? I work for an architecture firm, often retouch images, and this is a recurring situation on images so I'd really like to know once for all.
The original image is very high res, this is just a screen shot:

