mmareaclose - Area closing

Input: f: Gray-scale (uint8 or uint16) or binary image (logical uint8).; a: non negative integer.; Bc: Structuring element. ( connectivity). Default: Elementary cross (mmsecross).

Output: y: Gray-scale (uint8 or uint16) or binary image (logical uint8).

Description: mmareaclose removes any pore (i.e., background connected component) with area less than a of a binary image f. The connectivity is given by the structuring element Bc. This operator is generalized to gray-scale images by applying the binary operator successively on slices of f taken from higher threshold levels to lower threshold levels.

Limitation: The structuring elements allowed are the elementary cross (4-connected) and the elementary box (8-connected).

Examples

a=mmreadgray('form-1.tif');
b=mmareaclose(a,400);
mmshow(a);
mmshow(b);

(a)

(b)

a=mmreadgray('n2538.tif');
b=mmareaclose(a,400);
mmshow(a);
mmshow(b);

(a)

(b)

See Also: mmareaopen - Area opening.; mmclohole - Close holes of binary and gray-scale images.; mmfreedom - Control automatic data type conversion.; mmlabel - Label a binary image.; mmregmin - Regional Minimum (with generalized dynamics).; mmsebox - Create a box structuring element.; mmsecross - Cross structuring element.

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