Length & Width measurement of an image in Millimeters

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Vijay
Vijay le 9 Fév 2013
Commenté : Matt J le 4 Fév 2018
I am able to get the length and width of an image in pixels only.I am in need of measuring the length & width in millimeters for pixels/mm for a text extraction algorithm. how to get the values in millimeter?

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Matt J
Matt J le 9 Fév 2013
You could measure, physically, the dimensions of a letter of text and then measure the same letter's dimensions in pixels in your image. Then you could deduce the size of your pixels in mm.
  2 commentaires
Caroline David
Caroline David le 4 Fév 2018
Is there a code for length measurements??
Matt J
Matt J le 4 Fév 2018
No, there is no code for length measurements.

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Plus de réponses (2)

Vijay
Vijay le 9 Fév 2013
Thats what i am not aware of how to measure the length & width in physical quantities.. all i get is in pixels only
  4 commentaires
Vijay
Vijay le 10 Fév 2013
Thanks image analyst i got your demonstration on spatial calibration. ill make sure to answer people who are asking the same question again and again thanks a lot..
Image Analyst
Image Analyst le 10 Fév 2013
Where did you get my demo on spatial calibration?

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Vijay
Vijay le 10 Fév 2013
  1 commentaire
Image Analyst
Image Analyst le 10 Fév 2013
Thanks - I'd forgotten about that one. It's quite a nice demo.

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