Metric plane rectification using symmetric vanishing points

Video analysis often requires mapping of activity or object locations from image coordinates to ground plane coordinates. This process is termed Plane Rectification. In this paper we propose a geometric method to find plane rectification using the plane´s vanishing line and the vertical vanishing point. Unlike common methods that provide sophisticated algebraic solutions and non-linear optimizations, the proposed approach is intuitive and simple to implement while providing a geometric explanation and interpretation of the plane rectification. We show that the proposed approach provides stable and accurate solutions also in the presence of noise.