Inverse Tone Mapping Based upon Retina Response

Table 1

Red, green, and blue percentages of metric result for subset images: large red percentage means more contrast reversal, large green percentage denotes more contrast loss, and large blue percentage indicates more detail revelation.

Images	Percentage (%)
	Proposed			iPG			LDR2HDR			𝛾 expansion
	Red	Green	Blue	Red	Green	Blue	Red	Green	Blue	Red	Green	Blue
Sky	1.020	0.072	88.46	6.260	2.140	24.56	7.200	28.71	17.38	3.160	0.380	54.18
Sun	0.370	0.760	81.17	3.040	17.50	31.92	1.620	15.07	43.58	73.15	26.12	0.660
Snow	1.540	0.590	68.09	3.490	9.650	41.44	6.600	55.56	17.15	0	100	0
Sea	1.250	3.350	49.56	2.020	3.160	53.63	2.240	65.05	9.820	1.700	3.040	30.84
Building	1.560	0.190	61.06	3.260	5.250	32.59	8.520	25.90	28.73	6.230	61.70	22.28
Gate	2.680	0.350	76.19	9.100	10.37	65.69	13.75	16.98	40.84	7.820	76.22	10.86
River	2.320	0.760	55.75	4.990	2.200	2.470	10.01	39.93	1.580	24.03	75.92	0
Average	1.534	0.868	68.61	4.594	7.181	36.04	7.134	35.31	22.73	16.59	49.05	16.97