how to merge two different blob?

I got 3 color blob(1,2,3).

Firstly, I want to write a loop to create a table which state which blob is connected with another blob.

Then, I want try to merge them to form a same blob.How to solve this?

Answer 1

[Image Analyst]

It's a poor description of what's going on. I'm going to assume you have an image that you thresholded to get a binary image and then you called bwlabel() and label2rgb() to colorize the blobs differently. So you should have the binary image already. If you don't for some reason, and you don't have the labeled image either, you can recover it from using any

binaryImage = logical(any(rgbImage, 3));

[Tan Wen Kun]

I doing image segmentation.

I trying to merge different blob together to form back the object.

So I need try merge on binary image or color blob?

[Image Analyst]

You're going to have to use the original color image along with the labeled image, not the labeled/colorized one.

[Tan Wen Kun]

How to read the color pixel from a region and reassign color of one region to another?

[Image Analyst]

First of all you have to know what color you want to assign to the other region. Then you need to know the label of the region to accept the new color. Do you know that?

[Tan Wen Kun]

MyImage = imread('MyPicture.jpg')

PixelValue = MyImage(y,x); Gets the Pixel value at position y,x.

or using impixel to get it?

[Image Analyst]

That will work for gray scale images. If it's color you need to do

PixelValue = MyImage(y, x, :);

or you can use impixel() for either color or gray scale images.