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Tutorial: Perspective correction (the linee cadenti) with Gimp

Finished work

In this tutorial we deal with correct perspective a photo with Gimp. Often (especially in the narrow streets) having to take pictures of monuments or facades of tall buildings, having available a limited field for framing. It is clear that we will be closer to the monument over the photo will be "far" from axonometrically correct. The perspective correction is also called correction (or modification) the falling lines. This is because taking a picture up close to an architectural one gets the impression that the monument is falling backwards (architectural lines converge upwards.

What we will do today is "straighten" the lines of a facade, Gimp as well as we should have another couple of plugins: "MathMap" and "FX-Foundry".