Perceived Image Quality on Mobile Phones with Different Screen Resolution

Table 5

Comparison between perceived image quality for 4K images on P4, P5, P6, P7, and P8.

Quality level	Test devices	Percentage of ΔPQ ≥ 0	Mean ΔPQ	Percentage of ΔPQ < 0	Mean ΔPQ
High ()	P4 versus P5	100%	0.12	0%	—
	P5 versus P6	80%	0.06	20%	−0.12
	P7 versus P8	60%	0.19	40%	−0.14
Medium ()	P4 versus P5	90%	0.12	10%	−0.07
	P5 versus P6	60%	0.11	40%	−0.18
	P7 versus P8	40%	0.18	60%	−0.13
Low ()	P4 versus P5	80%	0.13	20%	−0.09
	P5 versus P6	70%	0.12	30%	−0.18
	P7 versus P8	60%	0.13	40%	−0.16

P4 (720P, 5.1 inches), P5 (1080P, 5.1 inches), P6 (Quad HD, 5.1 inches), P7 (1080P, 5.5 inches), and P8 (Quad HD, 5.5 inches).