MorphologicalComponents

MorphologicalComponents[image]
gives an array in which each pixel of image is replaced by an integer index representing the connected foreground image component in which the pixel lies.

MorphologicalComponents[image, t]
treats values above t as foreground.

MORE INFORMATION

MorphologicalComponents assigns sequential integers to different connected components.

MorphologicalComponents gives 0 for pixels that correspond to the background in the image.

MorphologicalComponents[image] is equivalent to MorphologicalComponents[image, 0].

MorphologicalComponents by default treats all eight pixels surrounding a given pixel as adjacent.

The option setting CornerNeighbors->False treats only the four pixels in the coordinate directions as adjacent.

MorphologicalComponents works with binary, grayscale and other images.

EXAMPLES

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Basic Examples (2)

Connected component labels as a matrix:

In[1]:=

Out[1]//MatrixForm=

Find the connected components in a binary image:

In[2]:=

Out[2]=

Specify an explicit threshold:

Options (1)