Gimp actions:

* Removal of a few branches using Resynthesizer
* Digital blending (see luminous-landscape recipe).
* Selective sharpening (use edge detection layer mask) on Value channel of HSV decomposed image.
* Selective blur (using inverted edge detection layer mask).
* Local contrast enhancement (which is: USM Radius 50!, Amount 20%, Threshold 2)
* resizing / another USM on the Value channel.