EL: Local Image Descriptor Based on Extreme Responses to Partial Derivatives of 2D Gaussian Function

Table 2

Basic properties of the evaluated descriptors. The speed is measured in thousands of descriptors extracted per second.

Descr.	SIFT	RootSIFT	DC-S	DC-S2S	DDESC	TF-M	TF-R	EL	E	L
Dims	128	128	256	512	128	128	128	272	136	136
Patch Sz	65	65	64	64	64	32	32	65	65	65
CPU speed	2	2	0.3	0.2	0.1	0.6	0.6	0.4	1	0.6