How to connect each pair of pixels Image A taken from image B (Image A and Image B are given as under)

Hi,

I have extracted some pixels (based on some criteria ) from image A and got Image B

as shown below.

Now, I need to connect each pair pixel of Image B, if the corresponding points/pixels are connected in A?? How to do that.???

Answer 1

[Image Analyst]

Very easy. Just call bwlabel on A

[labeledImage, numRegions] = bwlabel(A);

where A is a binary image.

Then use find() and pdist2() (stats toolbox) on B to get distances and select the smallest non-zero distance - trivial, but let me know if you can't do it.

Then, for your two pixels locations in B you want to check on, simply check if the labels are the same or different.

if labeledImage(row1, col1) == labeledImage(row2, col2)
    % Those two locations in B are on the same curve in A
else
    % Those two locations in B are on different curves in A
end

[Mohammad Bhat]

Sir, If u can provide code-snippet , that will help...

[Image Analyst]

Read this http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

and then upload your original image A and image B. Also provide what you'd like your final image to look like - mock something up in Photoshop if you have to.

[Mohammad Bhat]

Sir,

Here the Images are shown in the pipeline, respectively.

Third Image (from left to right) is desired image

(pixels shown in desired image are shown apart for understanding, )