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BUILT-IN MATHEMATICA SYMBOL

LaplacianGaussianFilter

convolves image with a Laplacian-of-Gaussian kernel of pixel radius r.

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convolves image with a Laplacian-of-Gaussian kernel of radius r and standard deviation

applies Laplacian-of-Gaussian filtering to an array of data.

LaplacianGaussianFilter specifies different radii in vertical and horizontal directions.

Method	"Bessel"	how to determine elements of the Gaussian matrix
Padding	"Fixed"	padding method
WorkingPrecision	Automatic	the precision to use
"Standardization"	True	whether to rescale and shift the Gaussian matrix to account for truncation

LaplacianGaussianFilter by default gives an image of the same dimensions as image.

With a setting Padding->None, LaplacianGaussianFilter normally gives an image smaller than image.

In LaplacianGaussianFilter, data can be an array of any rank, and can contain symbolic as well as numerical entries.

Find edge features in a color image:

Laplacian of Gaussian applied to a grayscale image:

Find the edges of an object, showing the inside of the edge in darker tones and the outside in brighter tones:

Laplacian of Gaussian filter of a numeric array:

Find edge features in a color image:

Out[1]=

Laplacian of Gaussian applied to a grayscale image:

Out[1]=

Find the edges of an object, showing the inside of the edge in darker tones and the outside in brighter tones:

Out[1]=

Laplacian of Gaussian filter of a numeric array:

Out[1]=

Detect edges by finding the zero crossings of a LoG filtered image:

Apply a LoG filter to the output of a distance transform: