### Laplace Filter

**Block Category:** Detection

Input Image
Format

**Input Image Requirements: **None

**Description:** The Laplace Filter block applies
Laplacian filtering on an image to create an image gradient, typically to detect
edges. When the image is read into the Laplace Filter, it is automatically
converted to gray scale and a Gaussian blur is applied to reduce noise
sensitivity.

**K Size:** Specifies the aperture size used to compute
the second derivative filter. The value must be odd and positive. The default is
1.

**Scale:** Specifies the scale factor for the computed
Laplacian values. The default is 1.

#### Example

In this example, the kernel size is 3 and the scale is
2.