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利用小变换和特征加权进行纹理分割
引用本文:吴高洪,章毓晋,林行刚. 利用小变换和特征加权进行纹理分割[J]. 中国图象图形学报, 2001, 6(4): 333-337
作者姓名:吴高洪  章毓晋  林行刚
作者单位:吴高洪(清华大学电子工程系,北京 100084)      章毓晋(清华大学电子工程系,北京 100084)      林行刚(清华大学电子工程系,北京 100084)
基金项目:国家自然科学基金项目(69672029)
摘    要:为了提高纹理图象分割的边缘准确性和区域一致性以及降低分割错误率,提出了一种基于小波变换的利用特征加权来进行纹理分割的方法。该方法包括特征提取、预分割和后分割3个阶段,其中,特征提取在金字塔结构小小以变换的基础上进行;预分割利用均人矣类算法来对原始图象进行初步的分割;后分割则根据预分割的结果对特征进行加权,然后利用最小距离分类器来实现图象的最后分割。与传统的方法相比,该方法在分割错误率、边缘准确性以及区域一致性等方面均有明显的改善。

关 键 词:纹理分析 纹理分割 小波变换 特征提取 特征加权 图象分割
文章编号:1006-8961(2001)04-0333-05
修稿时间:1999-02-04

Texture Segmentation with Wavelet Transform and Feature Weighting
WU Gao-hong,ZHANG Yu-jin and LIN Xing-gang. Texture Segmentation with Wavelet Transform and Feature Weighting[J]. Journal of Image and Graphics, 2001, 6(4): 333-337
Authors:WU Gao-hong  ZHANG Yu-jin  LIN Xing-gang
Abstract:To improve the accuracy of boundary locations and region homogeneity as well as to reduce the error rate in texture image segmentation, a novel approach based on wavelet-transform and using feature weighting is proposed in this paper. This new technique contains three consecutive stages: feature extraction, pre-segmentation and post-segmentation. In the feature extraction stage, texture features are extracted by using the pyramid-structured wavelet transform. The original image is then segmented initially using the means clustering algorithm in the pre-segmentation stage. According to the pre-segmentation results, the extracted features are weighted and the pre-segmented image is further processed with a minimum distance classifier in the post-segmentation stage to finally get the segmented image. All technical points are clearly described and presented in detail. Some segmentation experiments with different Brodatz's texture images are performed to test the performance of the new technique and are also included. Compared with a typical traditional method, the present approach shows visible improvements both in diminishing segmentation error, and in increasing boundary precision and region harmony.
Keywords:Texture analysis   Texture segmentation   Wavelet transform   Feature extraction   Feature weighting
本文献已被 CNKI 维普 等数据库收录!
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