How can i convert euclidean distance into real world distance?

I have euclidean distance between a centroid between two consecutive frames, i want to convert this euclidean distance in Real world distance how can i map this euclidean distance with real world distance?

Answer 1

[Meade]

I'm not exactly sure what you mean when you say "real world distance".

If you mean that the euclidean distance is in x,y,z component form and you want the total length (aka magnitude), then you can find the resultant.

r = sqrt((x^2)+(y^2)+(z^2))