Beadiful

Beadiful lets you create fuse bead pixel art from photographs. 

Select a photo from your photo album, zoom and pan it, and generate a bead pattern using one or more of the Hama, Nabbi and Perler bead sets and the size of peg board you choose.

There is an option to boost photos for clarity and increased contrast which can improve the pattern. 

Save the generated patterns as images to the phone's photo album. You can save the pattern as a grid with bead codes, a list of the beads used for the pattern, and with the colors of the beads overlaid on the photo for manual tweaking.

Color matching from picture to bead is performed using an algorithm that takes perception into account (https://www.compuphase.com/cmetric.htm), with additional criteria to match blues, greens and grays, and to avoid overmatching purples.