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Front. Inform. Technol. Electron. Eng.  2011, Vol. 12 Issue (1): 54-61    DOI: 10.1631/jzus.C0910797
    
New separation algorithm for touching grain kernels based on contour segments and ellipse fitting
Lei Yan1,2, Cheol-Woo Park1, Sang-Ryong Lee1, Choon-Young Lee*,1
1 School of Mechanical Engineering, Kyungpook National University, Daegu 702-701, Korea 2 School of Technology, Beijing Forestry University, Beijing 100083, China
New separation algorithm for touching grain kernels based on contour segments and ellipse fitting
Lei Yan1,2, Cheol-Woo Park1, Sang-Ryong Lee1, Choon-Young Lee*,1
1 School of Mechanical Engineering, Kyungpook National University, Daegu 702-701, Korea 2 School of Technology, Beijing Forestry University, Beijing 100083, China
 全文: PDF(283 KB)  
摘要: A new separation algorithm based on contour segments and ellipse fitting is proposed to separate the ellipse-like touching grain kernels in digital images. The image is filtered and converted into a binary image first. Then the contour of touching grain kernels is extracted and divided into contour segments (CS) with the concave points on it. The next step is to merge the contour segments, which is the main contribution of this work. The distance measurement (DM) and deviation error measurement (DEM) are proposed to test whether the contour segments pertain to the same kernel or not. If they pass the measurement and judgment, they are merged as a new segment. Finally with these newly merged contour segments, the ellipses are fitted as the representative ellipses for touching kernels. To verify the proposed algorithm, six different kinds of Korean grains were tested. Experimental results showed that the proposed method is efficient and accurate for the separation of the touching grain kernels.
关键词: Separation algorithmTouching grainsContour segmentsEllipse fitting    
Abstract: A new separation algorithm based on contour segments and ellipse fitting is proposed to separate the ellipse-like touching grain kernels in digital images. The image is filtered and converted into a binary image first. Then the contour of touching grain kernels is extracted and divided into contour segments (CS) with the concave points on it. The next step is to merge the contour segments, which is the main contribution of this work. The distance measurement (DM) and deviation error measurement (DEM) are proposed to test whether the contour segments pertain to the same kernel or not. If they pass the measurement and judgment, they are merged as a new segment. Finally with these newly merged contour segments, the ellipses are fitted as the representative ellipses for touching kernels. To verify the proposed algorithm, six different kinds of Korean grains were tested. Experimental results showed that the proposed method is efficient and accurate for the separation of the touching grain kernels.
Key words: Separation algorithm    Touching grains    Contour segments    Ellipse fitting
收稿日期: 2009-12-29 出版日期: 2010-01-10
CLC:  TP391  
基金资助: Project supported by the Grant of the Korean Ministry of Education, Science and Technology under the Regional Core Research Program
通讯作者: Choon-Young Lee     E-mail: cylee@knu.ac.kr
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Lei Yan, Cheol-Woo Park, Sang-Ryong Lee, Choon-Young Lee. New separation algorithm for touching grain kernels based on contour segments and ellipse fitting. Front. Inform. Technol. Electron. Eng., 2011, 12(1): 54-61.

链接本文:

http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C0910797        http://www.zjujournals.com/xueshu/fitee/CN/Y2011/V12/I1/54

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