An Efficient Shape Representation and Description Technique

An Efficient Shape Representation and Description Technique
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一种高效的形状表示和描述技术

DOI:
10.1109/icip.2007.4379616
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发表时间:
2007
期刊:
2007 IEEE International Conference on Image Processing
影响因子:
--
通讯作者:
W. Abdelsalam
W. Abdelsalam
中科院分区:
--
文献类型:
--
作者:
Y. Ebrahim;Maher Ahmed;Siu;W. Abdelsalam

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本文提出了一种基于Hilbert空间填充曲线和小波分析相结合的形状表示和描述方法。我们的目标是利用希尔伯特空间填充曲线的局部化保持性质和小波变换的逼近能力。使用希尔伯特曲线扫描对象图像,并且使用小波变换对所得到的矢量进行平滑并采样。时间复杂度为O(N),时间复杂度为O(N)。我们在MPEG-7数据集,Kimia-99数据集,ETH-80数据集和徽标数据集上展示了一些实验结果。
In this paper, we present a novel approach to shape representation and description based on the combination of the Hilbert space filling curve and wavelet analysis. Our objective is to capitalize on the localization-preserving nature of the Hilbert space filling curve and the approximation power of the wavelet transform. The object image is scanned using the Hilbert curve and the resulting vector is smoothed using the wavelet transform and sampled. The technique is O(N) for both representation and comparison. We present some experimental results on the MPEG-7 dataset, Kimia-99 dataset, ETH-80 dataset, and a logo dataset.