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Computes the Laplacian of input scalar-valued image(s).

The Laplacian filter is a type of image derivative filter that computes the second derivative of the intensity values in an image. It calculates the rate of change of the gradient magnitude, and is used to detect areas of rapid intensity change in an image, such as edges and corners. The Laplacian filter outputs a map of the second derivative values, which highlight the areas of rapid intensity change in the image. In computer vision and image processing, the Laplacian filter is often used in tasks such as edge detection, image sharpening, and blob detection. The Laplacian is usually applied to an image that has first been smoothed with a Gaussian filter in order to reduce its sensitivity to noise, and is usually known as the Laplacian of Gaussian (LoG) filter..



Input image(s).

Type: Image, List, Required, Single



Output image(s).

Type: Image, List


Displacement Unit Selection

Set the displacement unit. If set to pixels [px], the voxel size will be ignored.

Values: px, mm

See also