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mmwatershed - Watershed detection.

Synopsis
y = mmwatershed( f, Bc, LINEREG )
Input
f: Gray-scale (uint8 or uint16) or binary image (logical uint8).
Bc: Structuring element. ( connectivity) Default: Elementary cross (mmsecross).
LINEREG: String. 'LINES' or ' REGIONS'. Default: "LINES".
Output
y: Gray-scale (uint8 or uint16) or binary image (logical uint8).
Description
mmwatershed creates the image y by detecting the domain of the catchment basins of f, according to the connectivity defined by Bc. According to the flag LINEREG y will be a labeled image of the catchment basins domain or just a binary image that presents the watershed lines. The implementation of this function is based on [Vin91] .
Limitation
The structuring elements allowed are the elementary cross (4-connected) and the elementary square (8-connected).
Examples 
f=mmreadgray('astablet.tif');
grad=mmgradm(f);
w1=mmwatershed(grad,mmsebox);
w2=mmwatershed(grad,mmsebox,'REGIONS');
mmshow(grad);
mmshow(w1);
mmlblshow(w2);
image
(grad)
image
(w1)
image
(w2)
See Also
mmcwatershed - Detection of watershed from markers.
mmfreedom - Control automatic data type conversion.
mmsebox - Create a box structuring element.
mmsecross - Cross structuring element.
mmswatershed - Detection of similarity-based watershed from markers.
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