Table 1.

Average fractal dimension and luminance values for each category of paintings and each type of synthetic fractal image in Experiment 1.

	Average fractal dimension			Average luminance
	Low	Intermediate	High	Low	Intermediate	High
Abstract	1.06	1.42	1.85	147.1	115.3	119.0
Buildings	1.18	1.45	1.67	128.5	118.2	126.1
Flowers	1.29	1.42	1.72	76.80	68.86	80.15
Forest	1.13	1.40	1.73	127.6	114.72	102.0
Mountain	1.08	1.37	1.65	141.3	111.8	121.5
River	1.14	1.44	1.69	124.5	89.17	83.73
Sea	1.18	1.40	1.70	128.2	147.1	148.4
Mean	1.154	1.418	1.711	124.8	109.3	111.6
Grayscale	0.97	1.62	2.05	127.5	127.5	127.5
Threshold	0.97	1.62	2.05	115.3	123.7	127.6
Edge	0.99	1.66	1.97	1.530	27.27	74.51
Mean	0.98	1.63	2.02	81.46	92.81	109.9