Straight line extraction via multi-scale Hough transform based on pre-storage weight matrix

Straight line extraction via multi-scale Hough transform based on pre-storage weight matrix
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基于预存权重矩阵的多尺度Hough变换直线提取

DOI:
10.1080/01431161.2010.536184
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发表时间:
2011-12
影响因子:
3.4
通讯作者:
Zhang, Yunsheng
Zhang, Yunsheng
中科院分区:
工程技术3区
文献类型:
--
作者:
Xu, Shenghua;Liu, Jiping;Wang, Yong;Han, Litao;Zhang, Yunsheng

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针对现有大尺度图像直线提取方法效率低、精度低的问题,提出一种基于预存储权值矩阵的多尺度Hough变换(HT)方法。拟议的运输安排的改善措施包括:使用预存储权重矩阵来节省存储空间并提高HT的效率,应用多尺度方法来实现从大尺寸图像中检测较小特征,使用重叠的相邻瓦片来避免碎片线,优化离散变换域的维度,对累加器进行归一化以提取偏离中心的线,并使用双阈值进行分布线检测。实验结果表明,该算法不仅具有更高的效率和鲁棒性,而且能够获得更丰富、更准确的特征信息,特别是对于大尺寸图像。
Considering the low efficiency and accuracy of existing straight line extraction methods from large-scale imagery, a multi-scale Hough transform (HT) method based on the pre-storage weight matrix is proposed. Improvements of the proposed HT include: using the pre-storage weight matrix to save storage space and improve the efficiency of the HT, applying a multi-scale method to enable the detection of smaller features from large-size images, using overlapping adjacent tiles to avoid the fragmented lines, optimizing the dimensions of the discrete transform domain, normalizing the accumulator to extract off-centred lines and using a dual threshold for distributed line detection. The experimental results show that the proposed algorithm is not only more efficient and robust but also can obtain richer and more accurate information about features, especially for large-size images.
DOI: 10.1016/j.patcog.2004.09.003
发表时间: 2005-04
期刊: Pattern Recognit.
影响因子: --
作者:
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