pmaximumvalue

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

Synopsis

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

Description

pmaximumvalue returns the maximum value in the input image or region map or graph im_in. if im_in is an image, the maximum value is the maximum pixel value on each band. If im_in is a region map, the maximum value is the maximum label value. If im_in is a graph, the maximum value is the maximum node value.

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

Examples

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

   pmaximumvalue tangram.pan col.pan
   val=`pstatus`
   echo "Maximum = $val"

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

   pmaximumvalue tangram.pan col.pan
   call pstatus
   call pset val
   echo Maximum = %val%

C++ prototype

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

Version française

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

Author: Régis Clouard