摘要
引入了一种基于DFD的自动对焦算法。通过这种算法,只要给定了两幅不同离焦位置的图像,就可由算法推导出目标物体的正确对焦位置,从而控制镜头完成自动对焦。实验表明,这种算法精度比较高,速度比较快,鲁棒性良好。
In this paper,an autofocus algorithm based on depth from defocus is introduced. If two defocus images of different defocus positions are given,the right focus position may be deduced. Then the lens can be adjusted to finish the autofocus. Experiments show that the algorithm is precious,rapid,and robust.
出处
《光学仪器》
2005年第4期39-44,共6页
Optical Instruments
关键词
成像
自动对焦
离焦深度法
点扩散函数
imaging
auto focus
depth from defocus （DFD）
point spread function
