| 一种结合解析与离散方法的方向场计算方法 |
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| 引用本文： | 傅启众,高隽,赵晶,曹薇.一种结合解析与离散方法的方向场计算方法[J].合肥工业大学学报(自然科学版),2002,25(3):321-324. |
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| 作者姓名： | 傅启众 高隽 赵晶 曹薇 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,安徽,合肥,230009 |
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| 基金项目： | 国家自然科学基金资助项目 ( 6 0 175 0 11)，安徽省自然科学基金资助项目 ( 0 10 42 30 1)，教育部优秀青年教师资助计划项目 |
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| 摘 要： | 方向场在指纹识别、纹理分类等领域有很重要的应用。文章介绍了两种方向场的计算方法——解析法和离散量化法 ,并对它们进行比较 ,提出一种结合解析法与离散法的算法 ,最后 ,用一幅简单条纹图像来验证本方向场计算方法的计算结果 ,并且给出了指纹等实际灰度图像方向场的计算结果。实验证明 ,这种方向场计算的时间可以与解析法相当。
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| 关 键 词： | 纹理 方向场计算 指纹方向图 主流方向 |
| 文章编号： | 1003-5060(2002)03-0321-04 |
| 修稿时间： | 2002年1月15日 |
A new approach to the orientation field computation based on the analytical and discrete methods |
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| FU Qi-zhong,GAO Jun,ZHAO Jing,CAO Wei.A new approach to the orientation field computation based on the analytical and discrete methods[J].Journal of Hefei University of Technology(Natural Science),2002,25(3):321-324. |
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| Authors: | FU Qi-zhong GAO Jun ZHAO Jing CAO Wei |
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| Abstract: | Orientation field plays an important role in the identification of fingerprints, taxonomy of texture and so forth. Two main approaches to the calculation of orientation field are introduced herein-the analytical method and the discrete quantization method,the calculated results are compared,and a new approach which combines the advantages of the two approaches is presented.The calculation of the orientation fields of a few typical texture and fingerprint images is made with the new approach,and the calculation results are discussed,which shows that there is not much difference in the computation time between the new approach and the analytical method. |
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| Keywords: | texture orientation field computation fingerprint directional image main orientation |
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