The program takes a bunch of images and generate a composition using a (random) growing pattern algoritm. If you dont like the composition you just have to click and the program will generate a new random composition… till the one you like.
The nice thing is that you can have a mask layer. The black parts of the mask image will be areas forbidden for the algoritm.
As an example I used more than 200 photos from one of my last architectural project, a retail centre in Lorca (Spain). Click to enlarge view or download PDF version.