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how many rows of an image form 1 feet

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input image is a person standing in full view. i am calculating height of the person. i got number of rows as 1936. how to find the height of this person in terms of feet

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Valentino on 7 Sep 2016
You have got the pixel in your pic. Now you need a calibration scale, something like 1 feet are 1200 Pixels (for instance).
Sivakumaran Chandrasekaran
thanks Valentino.. What about the accuracy? how much percentage we will get accuracy on an average?
Valentino on 7 Sep 2016
Matlab doesn't lose any of the pixels in your picture. If you put in an exact calibration scale, you'll only have the accuracy error from your resolution. If you cannot provide an exact calibration scale, that will also put down your accuracy.

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