基于离焦估计的对焦速度的提高方法

被引:7
作者
李奇
冯华君
徐之海
机构
[1] 浙江大学现代光学仪器国家重点实验室
关键词
快速对焦; 离焦估计; 对焦搜索; 模糊圆;
D O I
10.16136/j.joel.2005.07.022
中图分类号
TB85 [摄影机具与设备];
学科分类号
摘要
提出一种新的自动对焦准焦点定位方法。首先在3个位置估算离焦量,直接驱动镜头至准焦位置附近,用小步长进行搜索,找到最佳对焦位置。实验结果表明,该方法不需要对成像系统进行精确校准,在保持对焦深度(DFF)法的精度优势的同时,将对焦速度提高了37%。
引用
收藏
页码:850 / 853
页数:4
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