This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Hauck Neue Constructionen der Perspective figa. en picture of the vision by two cameras of point in the space epipolar vision fr image de la vision par deux appareils photo d'un mme point en vision pipolaire from file Hauck Neue Constructionen der Perspective und Photogrametrie Hermann Guido Hauck Dezember in Heilbronn Januar