Video quality metrics, reference implementation in python, with GPU optimizations and C versions as time permits.

• VIF-P, Visual Information Fidelity: implemented
• SSIM, Structural Similarity Metric: implemented
• PSNR, Peak Signal to Noise Ratio: implemented
• RECO, Relative Polar Edge Coherence: planned
• MS-SSIM, MultiScale Structural Similarity Metric: planned
• 3SSIM, 3-Component Structural Similarity Metric: planned
• VQUAD-HD: planned
• VQM: maybe
• UIQ, Universal Image Quality
• MSSIM, Motion SSIM

References:

H. R. Sheikh and A. C. Bovik, “Image information and visual quality,” Image Processing, IEEE Transactions on, vol. 15, no. 2, pp. 430–444, 2006.

V. Baroncini, L. Capodiferro, E. D. Di Claudio, and G. Jacovitti, “The polar edge coherence: a quasi blind metric for video quality assessment,” EUSIPCO 2009, Glasgow, pp. 564–568, 2009.

Z. Wang, E. P. Simoncelli, and A. C. Bovik, “Multiscale structural similarity for image quality assessment,” Conference Record of the Thirty-Seventh Asilomar Conference on Signals, Systems and Computers, 2003, vol. 2, pp. 1398–1402.