| 自动调焦系统中图像清晰度判别方法的研究 |
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| 引用本文： | 蔡明荣,马军山,王福红.自动调焦系统中图像清晰度判别方法的研究[J].光学仪器,2008,30(5):35-39. |
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| 作者姓名： | 蔡明荣 马军山 王福红 |
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| 作者单位： | 上海理工大学,光电学院,上海,200093 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 利用图像处理方法进行自动调焦的关键是图像清晰度特征值的提取。图像清晰度是衡量成像系统质量的重要指标。现介绍了四种新颖的判别方法,分别是经改进的灰度比较法,点锐度算法,平方梯度聚焦函数法,小波变换法。通过在不同的应用场合对这四种图像清晰度判别方法进行比较,为实际操作时如何选取提供了参考。
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| 关 键 词： | 图像清晰度 点锐度 灰度比较 平方梯度聚焦 小波变换 |
Research on the discrimination methods of the image definition in the auto-focusing system |
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| CAI Mingrong,MA Junshan,WANG Fuhong.Research on the discrimination methods of the image definition in the auto-focusing system[J].Optical Instruments,2008,30(5):35-39. |
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| Authors: | CAI Mingrong MA Junshan WANG Fuhong |
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| Abstract: | The key to focus automatically using the image process method is to extract the character of image definition.The image definition is an important item to measure the quality of the image system.Four novel discrimination methods are introduced in this paper.They are modified gray comparison method,point sharpness algorithm,squared-gradient focus function,wavelet transform method.Applied under different circumstances,they are compared to provide reference for selection in the practical operation. |
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| Keywords: | image definition point sharpness gray comparison squared-gradient focus wavelet transform |
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