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I want to measure length of an object from photo.

How can I do it?

Please help me.

What I have tried:

I got some codes in opencv but I want it in javascript so that I can use it on web app.
Updated 20-Aug-20 5:41am
Richard MacCutchan 20-Aug-20 11:12am
You need a frame of reference. e.g the scale of the picture and the actual dimensions of some feature in the image.
Member 14589077 20-Aug-20 12:34pm

1 solution

There is no one way to do this. There are many techniques, but not every technique is going to be valid to use for every photo.

Start doing some research on this by Googling for "measure length of object in a photo". You'll come up with lots of results for various techniques.

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