Name: WlzLaplacian - Applies a Laplacian edge enhancement filter.

Synopsis

WlzLaplacian [-o<output object file>] [-s kernel size]
           [-a] [-h] [<input object file>]

Options

-a	absolute value of the convolution.
-s	convolution kernel size (3, 5 or 7), default 3.
-o	Output object file name.
-h	Help - print help message
-v	Verbose operation

By default the input object is read from the standard input and the output object is written to the standard output. Unless the -a flag is set the resulting pixel values will be signed (for int or short pixel values) or centred around 128 for WlzUByte pixel values.

Description: Applies an edge enhancement filter to the input Woolz object, which must be a WLZ_2D_DOMAINOBJ with integral (int, short or unsigned char) grey values.

Examples

# An example of using WlzLaplacian with the default 3X3 kernel:

WlzLaplacian -o outfile.wlz infile.wlz

File: WlzLaplacian.c

See Also: WlzGauss(1) WlzRsvFilterObj(1) WlzGreyCrossing(1) WlzLaplacian(3)