[mmMaxpropagate] [Up] [mmMaxaopenth] Attribute Openings

mmMaxaopen
Attribute opening.

Synopsis

Image mmMaxaopen ( const MaxTree& maxtree , const String& attr , const Double& value , const Double& value2 = 0.0 );

Input

maxtree	MaxTree The MaxTree to be pruned.
attr	String Attribute: "area", "height", "volume", "bbox".
value	Double Attribute value.
value2	Double Optional attribute value. Default: `0.0`

Output

y	Image Filtered Image.

Description

This function implements attribute openings and returns the filtered image. The following filters are implemented:

"area" - prune nodes with area less than value. Equivalent to mmareaopen.
"height" - prune nodes with height less than value. Equivalent to mmhmax.
"volume" - prune nodes with volume less than value. Equivalent to mmvmax.
"bbox" - prune nodes with bounding box width less than valueand bounding box height less than value2.

Examples

Image a = mmReadgray("cameraman.tif");
MaxTree mt = mmMaxtree(a);
mmShow(a);
//
Image c1 = mmMaxaopen(mt, "area", 350);
mmShow(c1);
//
Image c2 = mmMaxaopen(mt, "height", 50);
mmShow(c2);
//
Image c3 = mmMaxaopen(mt, "volume", 5000);
mmShow(c3);
//
Image c4 = mmMaxaopen(mt, "bbox", 50, 50);
mmShow(c4);


a	c1


c2	c3


c4