pminimumvalue

Measures global minimum value of image, region map or graph.

Synopsis

pminimumvalue [-m mask] [im_in|-] [col_out|-]

Description

pminimumvalue returns the minimum value in the input object im_in. if im_in is an image, the minimum value is the minimum pixel value on each band. If im_in is a region map, the minimum value is the minimum label value. If im_in is a graph, the minimum value is the minimum node value.

The minimum values for each band are stored in the collection col_out.

Inputs

im_in: an image, a region map or a graph.

Outputs

col_out: a collection of float values.

Result

Returns the minimum value (for the first band only). This value can be get using operator pstatus.

Examples

Measures the global minimum of the tangram.pan (Unix version):

   pminimumvalue tangram.pan col.pan
   var=`pstatus`
   echo "Minimum = $val"

Measures the global minimum of the tangram.pan (MsDos version):

   pminimumvalue tangram.pan col.pan
   call pstatus
   call pset var
   echo Minimum = %val%

C++ prototype

Float PMinimumValue( const Img2duc &im_in, Collection & col_out );

Version française

Recherche de la valeur de pixel minimum dans une image (un graphe ou une carte de régions).

Author: Régis Clouard