I am using Photoshop CS5 Robin. Usually I just use the clone tool, however, in this case I would know that I will want to remove the wires in post processing so I would take a second image from a slightly higher or lower angle then align both images which would put the wires at different heights across the images. I could then simply paint out the wires using layers and a mask.
I used that technique here: Project 52 by Frank Miller to remove wires and tree branches,...
...and again here: Project 52 by Frank Miller and here: Project 52 by Frank Miller to remove light poles.
Robin,
As Frank in using photoshop CS5 or CS6, the easiest way to remove the lines is to use the Spot Healing Brush Tool with Content Aware ticked. This works perfectly on thin lines. If needed you may have to use short strokes and do them more than once.
Patrik
I have been using Capture NX and NX2 for years and can assure you that the product can't be used to reliably remove the unwanted pixels. That's because it has no clone tool that allows you to determine the source pixels that are to be used to replace the unwanted pixels. I keep a copy of Photoshop Elements because it's cheap for use on images such as this once I have completed all other post-processing tasks using NX2.
You could load up the Gimp Robin and use it's clone tool. It is a very powerful free program and I have done exactly what you want to do with it many times.
I have done a bit more playing with the photo and used FastStone in some place to repair some of the damage I did (on a copy!~!) it has what I consider so far to be a good source selection tool.
I will check out GIMP.
Robin, when useing Gimp....do not save. Use export and it will give you the options you need for Tiff or Jpeg. It does have a nice clone tool.
Well I can't easily go back and do this. The photo was taken in Brno.
However I have a few photos of this Cathedral, from attempting to get a photo with minimal lines cluttering the best look of the Cathedral.
I had a another go at cloning the lines out and making a few colour adjustments. I think I overdid boosting the red though.