iDroste

From Pavlos Mavridis:

Droste effect for your iPhone / iPod Touch.

iDroste lets you quickly and easily transform your images in Escher like masterpieces, by applying the same image transformation method as the one used by the famous artist in his drawings.

Load an image, change the parameters until you get the desired result and then save it to the photo album.

Quick Guide:

Step 1. Start with a photo that contains a region where you expect the photo to appear again (like a screen, a picture frame, a door, a book etc).

Step 2. Use the XCenter/YCenter controls to center the spiral over this region.

Step 3. Toggle the transparency switch if needed and adjust the InnerR in combination with XCenter/YCenter until you get the desired result.

Step 4. Use the XShift/YShift controls to frame the overall image.

Step 5. Hit the "Save Image" button and your photo will be saved in the photo albums.