I'm using the Superimpose software from Nokia on my N3230. I must say it's a fine piece of software. It allows the creation of new mask from taking pictures and manually selecting the masked area.
I noticed that when you create a new mask, 3 things happened:
1. A new jpg file is created in the \System\Apps\Superimpose\Masks (eg, 000003.jpg) which is of 640x480 resolution.
2. It appends the filename into the file \System\Apps\Superimpose\List.txt So if you have 3 masks, the text file will contain "000010000200003".
3. A file named "000003" is created in \System\Apps\Superimpose. No idea what this file is.
Anyone know how can I create a mask in my PC and then copy it over to the phone to use?