一种融合Canny和改进ISODATA的砾岩图像分割.pdfVIP

Computer Engineering and Applications 计算机工程与应用 2012 ，48 （10） 175 一种融合Canny 和改进ISODATA 的砾岩图像分割算法 袁传虎，吴晓红，王正勇，杨慧彪 YUAN Chuanhu, WU Xiaohong, WANG Zhengyong, YANG Huibiao 四川大学 电子信息学院，图像信息研究所，成都 610064 Institute of Image Information, College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China YUAN Chuanhu, WU Xiaohong, WANG Zhengyong, et al. Conglomerate image-segmentation method based on combining Canny and improved ISODATA algorithm. Computer Engineering and Applications, 2012, 48 （10）：175-178. Abstract ：The method based on combining Edgeflow and normal ISODATA has the disadvantage of the low pro- cessed speed and the inaccurate result, the method based on combining Canny and improved ISODATA is proposed for image segmentation. Color space of RGB is converted to color space of Lab, Canny algorithm is applied to get the initial over-segmentation image with the L of the color space Lab, and ISODATA is applied to get the conglomer- ation image in the color space of Lab. Then, the result based on ISODATA algorithm is applied to solve over- segmentation problem caused by Canny. Experimental results show that the method proposed for image segmenta- tion in this paper is efficient to conglomerate image segmentation. Key words ：conglomerate image; color space; image-segmentation; Canny; ISODATA 摘 要：针对基于边缘流和传统ISODATA （迭代自组织的数据分析算法）相融合的算法对砾岩图像进行分割时 存在速度慢、分割不准确的问题，提出了一种融合Canny 和改进ISODATA 聚类相结合的砾岩图像分割算法。 该算法将图像从RGB 色彩空间转换到Lab 色彩空间，利用Canny 算子对砾岩图像的L 分量进行边缘提取，得到 过分割图像；运用改进的ISODATA 聚类算法进行聚类，得到聚类图像，消除了Canny 算子的过分割问题。在砾 岩图像的分割应用中，该算法取得了较好的分割效果。 关键词：砾岩图像；颜色空间；图像分割；Canny 算子；ISODATA 聚类 文章编号：1002-8331（2012 ）10-0175-04 文献标识码：A 中图分类号：TP391.4 1 引言 构复杂，粒度粗，分选差，成分多样，采集的砾岩图像 砾岩是油气地质勘探的过程中重要的样本，近 背景复杂，颜色纹理丰富，这些给砾岩图像的分割带