Woolz Image Processing  Version 1.7.0
WlzGreyCrossing
Name
WlzGreyCrossing - detects grey value crossings.
Synopsis
WlzGreyCrossing [-o<output object file>] [-c crossing value]
           [-h] [<input object file>]
Options
-c grey-crossing value, default 0.
-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
Description
Computes a grey value crossing image from a 2D domain object with integral grey values.
Examples
# An example using WlzLaplacian(1) and WlzGreyCrossing for edge
# detection

WlzPixConvert 1 <infile.wlz | \
WlzLaplacian | \
WlzGreyCrossing -c0 | \
WlzThreshold -H -v1 >outfile.wlz
File
WlzGreyCrossing.c
See Also
WlzCannyDeriche(1) WlzGreyGradient(1) WlzGreyCrossing(3)