Patent Document ID: 4175328
Application ID: 05814147
Patent Status: 1

Claim One:
1. A method for producing photographic pictures suitable for photogrammetric survey of a spatial object, particularly after traffic accidents, comprising the steps of: establishing control points in said spatial object; taking two photographs using central projection with different positions of a projection center; evaluating said photographs by determining image coordinates of said control points and selected object points, said control points being part of a control point system, said system comprising: a reference plane with at least four points having known position coordinates defining a quadrangle, and at least two space points located outside said reference plane having position coordinates relative to said reference plane, at least the position coordinates of one of said space points and the space coordinates of the other of said space points being known; recording image coordinates of said six points and solving transformation equations of collinear transformation of said four image points of the quadrangle onto four points of said reference plane; recording spatial positions of the two projection centers; projecting image coordinates of selected object points onto the reference plane by applying transformation equations for determining transformed image points; forming intersection of two straight lines between the projection center and one of said transformed image points for determining space coordinates of a selected object point.