i want an algorithm to convert an 8 connected labelling into a 4 connected labelling on this binary image ?

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Amir 2015-4-5

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Image Analyst 2015-4-5

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Simply pass in 4 as the second argument indicating that you want to consider it as 4-connected.

labeledImage = bwlabel(binaryImage, 4);

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Amir 2015-4-5

SIR, its a built in function, i need an alternative code?

Image Analyst 2015-4-5

Why? Is it homework? Is so, you should have added the tag homework and mentioned that first. Here is a link to the algorithm that you can program up yourself from scratch: http://en.wikipedia.org/wiki/Connected-component_labeling

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