Find out the detailed definition of foreign orientation elements in photogrammetry.

The internal orientation element is a parameter that describes the relative position between the photography center and the photo, including three parameters, namely, the vertical distance (principal distance) f from the photography center S to the photo and the principal point of the image. Coordinates x0 and y0 in the frame coordinate system;

Externally oriented element

External orientation element: a parameter that determines the spatial position and posture of the photographic beam at the moment of photography, called external orientation element. The external orientation elements of a photo include six parameters, three of which are linear elements describing the spatial coordinate values of the photography center, and the other three are angle elements expressing the one-sided spatial attitude of the image.