Mathematica(@mathemetica):The 8-direction Sobel templates are convolution kernels used for edge detection in digital images. 3×3 convolution kernels for detecting edges in 8 different directions (0° to 315° at 45° intervals). Top row: 0, 1, 2 direction Middle row: 3, 4, 5 direction Bottom row: 6, 7 direction Right panel shows the corresponding edge direction numbering.

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Mathematica@mathemetica

2026.05.19 10:14

The 8-direction Sobel templates are convolution kernels used for edge detection in digital images. 3×3 convolution kernels for detecting edges in 8 different directions (0° to 315° at 45° intervals). Top row: 0, 1, 2 direction Middle row: 3, 4, 5 direction Bottom row: 6, 7 direction Right panel shows the corresponding edge direction numbering.