vselbig.1Vi

Langue: en

Version: 15 Februar 1994 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)

NAME

vselbig - select largest labelled component

SYNOPSIS

vselbig [infile] [outfile]

DESCRIPTION

vselbig selects the largest labelled component of a labelled image.

The input image must be a labelled image of type "ubyte" or of type "short". Typically, it has been created by some labelling algorithm, such as "vlabel2d", "vlabel3d", or some segmentation routine, e.g. "visodata". vselbig then creates a binary output image in which pixels belonging to the largest component (i.e. the most frequent label value) have value "1" and all other pixels have value "0".

TYPICAL PROCESSING CHAIN

The following is a typical processing chain:

visodata -in image.v | vbinarize -min 2 -max 2 | vlabel3d | vselbig -out result.v

This chain will segment the input image (visodata). It will then extract the class labelled "2" (vbinarize) and perform a connected component analysis of this class (vlabel3d). Finally, the largest connected component of class "2" is selected using vselbig.

COMMAND LINE OPTIONS

vselbig accepts the following options:
-help
Prints a message describing options.
-in infile
Specifies the Vista data file containing the input images.
-out outfile
Specifies where to write the output images as a Vista data file.

Input and output files can be specified on the command line or allowed to default to the standard input and output streams.

SEE ALSO

vlabel2d(1Vi),vlabel3d(1Vi) VImage(3Vi), Vista(7Vi)

AUTHOR

Gabriele Lohmann <lohmann@cns.mpg.de>