IMG Mosaic Generator is a simple photo mosaic creator written in Java.

It can be used with or without a GUI. The GUI shows the photomosaic generated so far, and allows a termination of the process.

There is support for multiple threads.

The result is written to an HTML file so that it may be easily modified. Two HTML files are created, one with the closest matching tile in every position, and one where tiles in adjacent positions must be different (in the optimal way, i.e. lowest total cost/difference).

The program will recurse through the given tile directory, trying to read every file as an image. When an image file (tile) is successfully read, it is processed immediately. The program is designed this way to avoid using lots of memory in the case of very many tile files.