Table 1.

Comparison of feature detectors and descriptors in the long-wavelength infrared radiation (LWIR) spectrum.

Detector	Descriptors	Execution Time	Features	Matched Feat. (%)
BRISK [44]	BRISK [44]	very long	very few	–
BRISK [44]	FREAK [45]	very long	very few	–
FAST [46]	BRIEF [47]	very short	medium	low
Shi–Tomasi [48]	FREAK [45]	medium	very many	very low
Shi–Tomasi [48]	SIFT [49]	medium	very many	high
Shi–Tomasi [48]	SURF [50]	medium	very many	very low
Oriented FAST (ORB) [51]	Rotated BRIEF (ORB) [51]	short	many	medium
DoG (SIFT) [49]	SIFT [49]	long	few	medium
Fast–Hessian (SURF) [50]	SURF [50]	long	medium	high
Fast–Hessian (SURF) [50]	FREAK [45]	long	medium	very low