skimage2.filters.sobel_v

skimage2.filters.sobel_v(image, mask=None)

Find the vertical edges of an image using the Sobel transform.

Parameters:

imagendarray of shape (M, N)

Image to process.

maskndarray of shape (M, N), optional

An optional mask to limit the application to a certain area. Note that pixels surrounding masked regions are also masked to prevent masked regions from affecting the result.

Returns:

outputndarray of shape (M, N) and dtype float

The Sobel edge map.

Notes

We use the following kernel:

1   0  -1
2   0  -2
1   0  -1