Nonintrusive Method Based on Neural Networks for Video Quality of Experience Assessment

Table 2

Mapping among QoE metrics (SSIM, PSNR, VQM, and MOS) [16].

MOS	PSNR (dB)	SSIM	VQM
5 (excellent)	≥37	≥0.93	<1.1
4 (good)	≥31–<37	≥0.85–<0.93	≥1.1–<3.9
3 (fair)	≥25–<31	≥0.75–<0.85	≥3.9–<6.5
2 (poor)	≥20–<25	≥0.55–<0.75	≥6.5–<9
1 (bad)	<20	<0.55	≥9