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Reading ruler position with webcam.

PostPosted: Tue May 26, 2015 4:35 pm
by aykutcanturk
Hi friends,

There are tools like digital caliper, linear encoders that measures lengths. the are basically rulers and they use magnetic strips. they simply count magnetic stripes and calculated the distance.

I want to make it optical by using webcam instead of using magnetic stripes.

Imagine a ruler with webcam pointed on it. dont think about numbers or anything. just imagine ruler with vertical lines. webcam placed to this ruler very closely and image is very clear.

as webcam moves, vertical lines will travel across video.

what I want to do is count these lines at the center of the video so I can calculate how far we go.

I googled every word I can think of to find a stating point I had no luck.

any suggestions please ?