pvaluenumber

Returns the amount of non null pixels of image, region map or graph.

Synopsis

pvaluenumber [-m mask] [im_in|-]

Description

pvaluenumber counts the number of non null pixels in the input image im_in. If the input object is a graph, pvaluenumber counts the number of non null nodes.

Inputs

im_in: a grayscale, a region map or a graph.

Result

Returns the number of non null pixels in the input image im_in. This value can be get using operator pstatus.

Examples

Returns the number of non null pixels in tangram.pan (Unix version):

   pvaluenumber tangram.pan
   val=`pstatus`
   echo "Total = $val"

Returns the number of non null pixels in tangram.pan (MsDOS version):

   pvaluenumber tangram.pan
   call pstatus
   call pset val
   echo Total = %val%

C++ prototype

Double PValueNumber( const Img2duc &im_in );

Version française

Comptage du nombre de pixels non nuls dans une image (un graphe ou une carte de régions).

Author: Régis Clouard