基于区域对比度的图像清晰度评价算法

张亚涛, 吉书鹏, 王强锋, 郭正玉

张亚涛, 吉书鹏, 王强锋, 郭正玉. 基于区域对比度的图像清晰度评价算法[J]. 应用光学, 2012, 33(2): 293-299.
引用本文: 张亚涛, 吉书鹏, 王强锋, 郭正玉. 基于区域对比度的图像清晰度评价算法[J]. 应用光学, 2012, 33(2): 293-299.
shu
ZHANG Ya-tao, JI Shu-peng, WANG Qiang-feng, GUO Zheng-yu. Definition evaluation algorithm based on regional contrast[J]. Journal of Applied Optics, 2012, 33(2): 293-299.
Citation: ZHANG Ya-tao, JI Shu-peng, WANG Qiang-feng, GUO Zheng-yu. Definition evaluation algorithm based on regional contrast[J]. Journal of Applied Optics, 2012, 33(2): 293-299.
shu

基于区域对比度的图像清晰度评价算法

  • 1.

    中国空空导弹研究院,河南 洛阳 471009;

  • 2.

    西北工业大学 机电学院,陕西 西安 710072

详细信息
    通讯作者:

    张亚涛（1986-），男，河南濮阳人，硕士研究生，主要从事航空图像处理和自动对焦研究工作。

  • 中图分类号: TN911.73;TP391.41

Definition evaluation algorithm based on regional contrast

  • 1.

    China Airborne Missile Academy, Luoyang 471009,China;

  • 2.

    School of MechanicalEngineering,Northwestern Polytechnical University,Xi-an 710072,China

摘要

    摘要
  • 摘要: 高效、准确的图像清晰度评价是实现自动调焦的关键。在分析了现有图像清晰度评价方法优缺点的基础上，提出了一种基于图像区域对比度的清晰度评价新方法，建立和分析了评价函数的数学模型，并对航空摄像机采集的系列图像进行实验和仿真。与其他算法比较的结果表明：该方法具有精确度高、对比度明显等优点，能够应用于实际的图像清晰度评价和自动对焦中，克服了单纯依靠计算灰度差带来的不足，具有较高的实用性和可靠性。
    Abstract: The accurate and efficient evaluation of image definition is a critical step in automatic focusing. In the available evaluation methods, there are a variety of limitations due to different parameters used. After analyzing the advantages and disadvantages of existing methods for image clarity evaluation, a new evaluation method for image definition based on regional contrasting is proposed based on image analysis and statistics. The mathematical model is established and analyzed, and the experimental results are given. It is proved that, this evaluation method satisfies the basic tactic requirements, and has high sensitivity and reliability in automatic focusing.
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    • 参考文献(1)
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出版历程
  • 刊出日期:  2012-03-14

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