Vertical Prewitt¶
Filters an image using a vertical prewitt kernel.
Inputs¶
Image (Type: Image)¶
The input image.
Region (Type: Region)¶
Specifies an optional area of interest.
Comments¶
The function applies a vertical prewitt filter. The corresponding kernel is a 3x3 matrix with the following values:
1 0 -1
1 0 -1
1 0 -1
The filter attenuates vertical edges while at the same time smoothing in the vertical direction.
Here are a few results of the vertical prewitt filter with increasing kernel sizes:
Original:
Result:
Sample¶
Here is an example that shows how to use the vertical prewitt filter.
Often, you want to combine the horizontal and the vertical prewitt 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:
