Table 2.

Structural similarity index (SSIM) values between the topographic image and the DMT modulus image of different bitumen before and after aging.

Sample		70#	50#	30#
Virgin	MV	0.8521	0.8946	0.8295
	SD	0.0099	0.0158	0.0294
RTFO	MV	0.9000	0.9055	0.8353
	SD	0.0105	0.0057	0.0254
PAV	MV	0.8954	0.8588	0.8611
	SD	0.0221	0.0427	0.0125