Application of Image Information to the Measurement of Soil Clod Fineness after Tillage

Hiromichi ITOH; Kimiko KITAZAWA; Akira OIDA; Hiroshi NAKASHIMA; Juro MIYASAKA; Takahito IZUMI

doi:10.11357/jsam1937.69.44

Hiromichi ITOH, Kimiko KITAZAWA, Akira OIDA, Hiroshi NAKASHIMA, Juro MIYASAKA, Takahito IZUMI

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Keywords: soil clod fineness, image feature, analysis of variance, multiple comparison, multiple regression analysis

JOURNAL FREE ACCESS

2007 Volume 69 Issue 1 Pages 44-51

DOI https://doi.org/10.11357/jsam1937.69.44

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Abstract

The purpose of this study is to evaluate the capability of image information in obtaining the fineness of soil clods by real time measurement, as defined by mean-weight-diameter (MWD). Thirty-four kinds of image features were measured from the surface images of all the soil samples, which included 26 variations of MWD. The effective features, which showed significant differences among the 26 levels of MWD by analysis of variance, were extracted and used for multiple regression analysis. The proportion of the regression equation for estimating the MWD was over 0.95. The capability of image information was then evaluated for the real-time measurement of soil clod fineness.

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