Horizontal Scharr

Filters an image using a horizontal scharr kernel.

Inputs

Image (Type: Image)

The input image.

Region (Type: Region)

Specifies an optional area of interest.

Outputs

Image (Type: Image)

The output image.

Comments

The function applies a horizontal prewitt filter. The corresponding kernel is a 3x3 matrix with the following values:

 3  10  3
 0   0  0
-3 -10 -3

The filter attenuates horizontal edges while at the same time smoothing in the horizontal direction.

Here are a few results of the horizontal scharr filter with increasing kernel sizes:

Original:

Result:

Sample

Here is an example that shows how to use the horizontal scharr filter.

Often, you want to combine the horizontal and the vertical scharr filter to create an edge map. A simple way to do this is shown in the following sample:

Here is an example image of such an edge map: