Get the position of pixels with specifed color

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nghia nguyen 2011-4-19

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Hi!

I have a problem with my fisrt IP project. I have a picture with 2 circles in it, a red circle and green circle. I want to get the position of two center and then connect them. Please tell me how can I do that. Thanks so much.

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Walter Roberson 2011-4-19

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convert the image to black and white, "label" the image, use regionprops() to find the centroid of each of the objects.

But you will have to define what you mean by "connect them": is that only for display purposes, or do you need to make a new image that has them connected (i.e., for further processing or for writing to a file) ?