| 摘要 |
<p>The method according to the invention comprises the following steps: forming a virtual space corresponding to the sports field by drawing the field in three dimensions on the basis of the actual measures and the position of a television camera; determining the virtual height of the billboard by drawing a line from the outer limit of said billboard to the camera and determining the intersection with a vertical plane; placing the desired polygonal or other form with the proportions of the original billboard and the calculated height on the inner limits and obtaining the deformation template by drawing lines from the camera to the billboard.</p> |
