if through done through a perl code.

It is done through perl code with the aid of GD.

You still haven't answered the question as to whether two completely non-overlapping lines far apart are less similar than two non-overlapping lines closer together.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^5: Can i Compare two images in perl ? by BrowserUk
in thread Can i Compare two images in perl ? by deep3101

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