A Method of Height Measure Based on Image

Introduces a practical method which can measure the height of the object located on the ground based on single image. Firstly, need some geometric information which include the vanishing line of the ground plane, a vanishing point for the vertical direction and a known vertical height. With the information, the value of the scale factor α can be fixed on through the function described below. At last, can easily get the height of the object only by the image coordinate of the vertex of the object. The experiments indicate the method is effective.