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How Does the (Inpho software) calculates the ground coordinates for each pixel in the image

Question asked by Ahmad SAELH on Jan 24, 2016
Latest reply on Jan 29, 2016 by Thomas Koch

Hello All,

 

How Does the (Inpho software) calculates the ground coordinates for each pixel in the image

 

I have a conceptual question regarding photogrammetry, what is the formula used to find the (X,Y,Z) on ground. All known software requires inputs like ( focal length, H of the plane, image exteriors (x,y,z, omega, phi, kappa), GCPs, pixel size) then the result is an orthophoto that have accurate coordinates, but I am curious on how does these software calculates the ground coordinate for each pixel in the image !

Is there any formulas/references on this, can I calculate a coordinate for one pixel manually just to check that the software is working fine or just to prove it for myself.

Best Regards

Ahmad

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