Table 4.

Computation Cost (Second).

Index	ASIFT	SIFT	Proposed Method
30°	11.25	4.58	6.11
40°	10.66	4.75	6.36
50°	9.76	4.07	5.89
60°	9.56	3.01	5.76
70°	9.56	2.64	4.18
Aerial image 1	9.27	4.66	6.77
Aerial image 2	10.86	4.85	6.14