Introduction - If you have any usage issues, please Google them yourself
Multi-Scale Structural Similarity Index (MS-SSIM). Download here.
Please cite the following paper in any published work if you use this software.
Z. Wang, E. P. Simoncelli and A. C. Bovik, "Multi-scale structural similarity for image quality assessment," IEEE Asilomar Conference Signals, Systems and Computers, Nov. 2003.