1
$\begingroup$

I am trying to find actual length of an object, say X, from an image. For that I'm using a reference object , say Y, ( object of known dimensions ). From image while converting pixel length of X to physical length, using reference object dimension , it is consistently resulting in error b/w 1.2 inch to 1.6 inch.

I am using one frame of 60 inch * 48 inch as a reference object and actual object is placed inside the frame. My formula is actual length of X = pixel length of X * actual length of Y / pixel length of Y.I am using overhead camera of 13 MP. what can be the reason of error ? and how to reduce this within 1 inch ?

$\endgroup$
  • $\begingroup$ Hi! can you please upload an example image with clear indications of your reference object and the measured object... $\endgroup$ – Fat32 Sep 28 '18 at 0:18

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.