Applications of the Discrete Hodge Helmholtz Decomposition to Image and Video Processing
Applications of the Discrete Hodge Helmholtz Decomposition to Image and Video Processing
复制标题
离散 Hodge Helmholtz 分解在图像和视频处理中的应用
DOI：
10.1007/11590316_78
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发表时间：
2005
影响因子：
2
通讯作者：
M. Mandal
中科院分区：
文献类型：
--
作者：
Biswaroop Palit;A. Basu;M. Mandal
离散Hodge-Helmholtz分解（DHHD）能够定位向量场中的临界点。我们探讨了这种技术在图像处理问题中的两个新应用，即，飓风追踪和指纹分析飓风的风眼代表一个旋转中心，这是强大的DHHD检测。随后是飓风眼的自动分割和跟踪，不需要手动初始化。DHHD还用于识别指纹中的参考点。用于参考点检测的新技术对方向场中的噪声相对不敏感。DHHD为基础的方法被证明是正确的检测参考点的数据库中使用的图像的96.25%。
The Discrete Hodge Helmholtz Decomposition (DHHD) is able to locate critical points in a vector field. We explore two novel applications of this technique to image processing problems, viz., hurricane tracking and fingerprint analysis. The eye of the hurricane represents a rotational center, which is shown to be robustly detected using DHHD. This is followed by an automatic segmentation and tracking of the hurricane eye, which does not require manual initializations. DHHD is also used for identification of reference points in fingerprints. The new technique for reference point detection is relatively insensitive to noise in the orientation field. The DHHD based method is shown to detect reference points correctly for 96.25% of the images in the database used.