Making the Rotating illusion image

Attention ! Photosensitive epilepsy

How to make
1. Load a stereo image to SPM
2. Resize to suitable size.
3. Push [Ctrl]+[Alt]+[G] keys.
4. Set Flashing time.(Normal and Negative)
5. Save image file.
6. If you check [Display created image in browser], you can see saved image immediately.