동력기계공학회지 (Journal of Power System Engineering)

  • 제20권4호
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  • Pages.32-37
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  • 2016
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  • 2713-8429(pISSN)
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  • 2713-8437(eISSN)
한국동력기계공학회 (The Korean Society for Power System Engineering)
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Fish Injured Rate Measurement Using Color Image Segmentation Method Based on K-Means Clustering Algorithm and Otsu's Threshold Algorithm

  • Sheng, Dong-Bo (Department of Mechanical Design Engineering, Pukyong National University) ;
  • Kim, Sang-Bong (Department of Mechanical Design Engineering, Pukyong National University) ;
  • Nguyen, Trong-Hai (Department of Mechanical Design Engineering, Pukyong National University) ;
  • Kim, Dae-Hwan (Department of Mechanical Design Engineering, Pukyong National University) ;
  • Gao, Tian-Shui (Department of Mechanical Design Engineering, Pukyong National University) ;
  • Kim, Hak-Kyeong (Department of Mechanical Design Engineering, Pukyong National University)
  • 투고 : 2016.04.12
  • 심사 : 2016.08.10
  • 발행 : 2016.08.31
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초록

This paper proposes two measurement methods for injured rate of fish surface using color image segmentation method based on K-means clustering algorithm and Otsu's threshold algorithm. To do this task, the following steps are done. Firstly, an RGB color image of the fish is obtained by the CCD color camera and then converted from RGB to HSI. Secondly, the S channel is extracted from HSI color space. Thirdly, by applying the K-means clustering algorithm to the HSI color space and applying the Otsu's threshold algorithm to the S channel of HSI color space, the binary images are obtained. Fourthly, morphological processes such as dilation and erosion, etc. are applied to the binary image. Fifthly, to count the number of pixels, the connected-component labeling is adopted and the defined injured rate is gotten by calculating the pixels on the labeled images. Finally, to compare the performances of the proposed two measurement methods based on the K-means clustering algorithm and the Otsu's threshold algorithm, the edge detection of the final binary image after morphological processing is done and matched with the gray image of the original RGB image obtained by CCD camera. The results show that the detected edge of injured part by the K-means clustering algorithm is more close to real injured edge than that by the Otsu' threshold algorithm.

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참고문헌

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