Remote Sensing and Geographic Information System for Fault Segments Mapping a Study from Taiz Area, Yemen

Table 2

Sobel kernel filters in four main directions.

Four main principal directions
NW-SE			E-W			NW-SE			N-S
−2	−1	0	−1	−2	−1	0	1	2	1	0	−1
−1	0	1	0	0	0	−1	0	1	2	0	−2
0	1	2	1	2	1	−2	−1	0	1	0	−1