摘要: This paper calculates the parameters of image position and orientation, proposes a mathematical model and adopts a new method with three steps of transformations based on parallel ray projection. Every step of the model is strict, and the map function of each transformation is the first order polynomials and other simple function. The final calculation of the parameters is for the linear equations with good status. As a result, the problem of the relativity of image parameter calculation is solved completely. Some experiments are carried out.