| 基于数字图像边缘信息的自动对焦算法研究 |
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| 引用本文： | 裘晓光,陈国金.基于数字图像边缘信息的自动对焦算法研究[J].杭州电子科技大学学报,2004,24(4):91-94. |
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| 作者姓名： | 裘晓光 陈国金 |
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| 作者单位： | 杭州电子科技大学机电学院,浙江,杭州,310018 |
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| 摘 要： | 基于数字图像的自动对焦算法有广泛的应用。提出了一种新的自动对焦算法，该算法通过一最小各向同性小波滤波器在对焦图像序列进行滤波，得到了一边缘特征图像序列，再以能量目标函数为准则，从这些边缘特征图像序列中，选出最佳对焦图像，从而确定精确对焦的位置。实验证明了该算法效果好于方差函数对焦算法。
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| 关 键 词： | 自动对焦 小波 小波滤波器 边缘提取 能量函数 |
| 文章编号： | 1001-9146(2004)04-0091-04 |
| 修稿时间： | 2004年2月24日 |
An Autofocus Algorithm Study Based on Image Edge |
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| QIU Xiao-guang,CHEN Guo-jin.An Autofocus Algorithm Study Based on Image Edge[J].Journal of Hangzhou Dianzi University,2004,24(4):91-94. |
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| Authors: | QIU Xiao-guang CHEN Guo-jin |
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| Abstract: | An novel autofocus algorithm is proposed. The algorithm involves edge extraction technology and extremum locating technology. The edge extraction is implemented by a 2D minimum isotropic wavelet filter, and the extremum locating is performed by energy function of edge feature image, namely searching the maximum energy image in a sequence of edge feature images which be obtained in the course of the focusing. Some experimental results are given in this paper. |
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| Keywords: | Autofocusing Wavelet Wavelet filter Edge extraction Energy function |
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