plocalminima

Computes local minimum values of grayscale image or graph.

Synopsis

plocalminima connexity [-m mask] [im_in|-] [im_out|-]

Description

plocalminima builds the new image im_out with the local minimum pixels of the input image im_in. The value of the minimum pixel is the same as in the input image. All other pixels are set to 0.

A point is a minimum if no neighbor is lower than it.

For graph, the minima are computed from the node values.

Parameters

connexity specifies the neighborhood relation (4, 8 in 2D) or (6, 26 in 3D). For graph, this parameter is ignored.

Inputs

im_in: a grayscale image or a graph.

Outputs

im_out: a grayscale image or a graph.

Examples

Locates the local minima in tangram.pan:

   plocalminima 8 tangram.pan a.pan

Result

Returns SUCCESS or FAILURE.

C++ prototype

Errc PLocalMinima( const Img2duc &im_in, Img2duc &im_out, int connexity );

Version française

Localisation des points constituant un minimum local.

Author: Régis Clouard