图像自动聚焦算法聚焦值的选择是数字相机自动聚焦系统的关键问题。
The choice of auto focus value for an image is the key factor to auto focus system of digital camera.
自动聚焦算法包括三个模块：聚焦区域选择、聚焦评价函数和极点搜索算法。
Autofocus algorithm consists of three modules: focus region selection, focus measurement function and peak searching algorithm.
对自动聚焦问题，分析了焦距变化的原因，给出了计算机控制的自动聚焦算法。
After analyzing why the focal length changes, I give an automatic focus algorithm controlled by computer.
在传统图像灰度方差评价函数的基础上，利用小波多分辨率分析，提出了一种新的自动聚焦算法。
On the basis of evaluation function of using image intensity variance, we proposed a new auto-focusing algorithm by means of Wavelet Transform Multi-Resolution Analysis(WTMRA) theory.
该算法能够减少爬山步数，可提高自动聚焦速度。
The algorithm reduces mountain climbing steps, and enhances auto-focus speed.
一个完善的自动聚焦系统软件应包含聚焦评价算法、聚焦区域选择算法以及聚焦搜索算法。
A perfect auto-focus system software should include focused evaluation algorithms, focused region selection algorithm and auto-focus search algorithm.
实验结果表明：将所提出的对焦评价算子和搜索算法结合使用， 能够准确实现自动聚焦，准确度达到95%以上。
The results show that the correlation operator with the cooperation of the lean operator can locate the prime focus position accurately, the accuracy is over 95%.
实验结果表明：将所提出的对焦评价算子和搜索算法结合使用， 能够准确实现自动聚焦，准确度达到95%以上。
The results show that the correlation operator with the cooperation of the lean operator can locate the prime focus position accurately, the accuracy is over 95%.
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