how to align the line detected to the middle of the image

The two transmission line is detected and then how can I align that two blue lines to the middle of the image which are symmetrically

Answer 1

[Image Analyst]

Presumably you know the angle if the line(s) since you plotted them over the grayscale image. So use imrotate() to rotate it, then use imtranslate() to shift it.

[PEIYU LIM]

If let say I want to make it automatically, its possible for me to do it?

[Image Analyst]

Yes, though after it's been rotated, it might be a little tricky to figure out how much to translate it. I don't have any code for that, so give it a try and attach your script if you can't figure it out.

[PEIYU LIM]

Because I have a series of image which is slightly changed about the alignment.

So I'm finding the solution that can auto align the line to the middle and straight after the line has been detected.