CIEDE2000 reports infinity for long videos
shssoichiro opened this issue · 1 comments
shssoichiro commented
Tested against pair of 5000 frame 720p clips.
PSNR - Y: 50.1176 U: 54.2056 V: 54.5304 Avg: 51.1303
APSNR - Y: 50.8060 U: 54.7653 V: 55.1817 Avg: 51.7696
PSNR HVS - Y: 51.2208 U: 52.7011 V: 52.5036 Avg: 48.1122
SSIM - Y: 24.6719 U: 25.0490 V: 25.4352 Avg: 24.8524
MSSSIM - Y: 30.9129 U: 31.4632 V: 31.8206 Avg: 31.1415
CIEDE2000 - inf
shssoichiro commented
Come to think of it, it's possible that this isn't due to video length, and that was just a coincidence. It's possible that our CIEDE2000 implementation just isn't bounded in case a lossless frame is found. The other metrics have an upper limit, e.g. PSNR maxes at 100 for a lossless frame to avoid this exact issue.