Many auto focus algorithms base on focus value curves, and they do not consider the correlation between sampling and image characteristic. 许多的自动对焦演算法基于清晰度值的曲线,但是他们并没有考虑到取样位置与影像的特性。
A interpolation formula for densing finite sampling points is given. 给出了用于有限样点加密的内插公式。