Connected component analysis matlab

1. What is connected components in Matlab?
2. What is the use of connected component analysis?
3. How do you label connected components in Matlab?
4. How do you find the largest connected component in Matlab?

What is connected components in Matlab?

A connected component, or an object, in a binary image is a set of adjacent pixels. Determining which pixels are adjacent depends on how pixel connectivity is defined. For a two-dimensional image, there are two standard connectivities: 4-connectivity — Pixels are connected if their edges touch.

What is the use of connected component analysis?

Connected components labeling scans an image and groups its pixels into components based on pixel connectivity, i.e. all pixels in a connected component share similar pixel intensity values and are in some way connected with each other.

How do you label connected components in Matlab?

Description. L = bwlabeln( BW ) returns a label matrix, L , containing labels for the connected components in BW . L = bwlabeln( BW , conn ) returns a label matrix, where conn specifies the connectivity. [ L , n ] = bwlabeln(___) also returns n , the number of connected objects found in BW .

How do you find the largest connected component in Matlab?

Find the number of connected components in the image. Determine which is the largest component in the image and erase it (set all the pixels to 0). numPixels = cellfun(@numel,CC. PixelIdxList); [biggest,idx] = max(numPixels); BW(CC.