Measurement of Volume and Surface Area for Spheroid Agricultural Product Based on 3D Wire Frame Model
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    Abstract:

    This article proposed a new method for fast measurement of the volume and surface area (VSA) of spheroid agricultural products based on 3D wire frame model via image processing using an Android device (AD). The spheroid product counting algorithm software was developed in Java combined with OpenCV library that uses AD to measure the VSA of spheroid agricultural products. The target photos were taken in normal conditions by AD. The image processing was used to get image, segment image, generate binarization image, filter noise, and calculate the VSA according to the coordinate of threedimensional wireframe model. Using this method to measure the ball with different diameters at six distances that between 100mm and 350mm, and the segment spacing was 50mm, which verified that the camera distortion was less than 0.3%, and the contour size of the measured object had scarcely effect on the measurement accuracy. The proposed method was applied to measure the VSA of 10 different citrus, apple and pear, and then all the fruits were measured by drainage method to get their volume and scanning method to attain their surface area. The test result shows that the correlation coefficient among proposed method, drainage method and scanning method was more than 0.98. The results indicated that the introduced method could be utilized as a rapid and nondestructive method for the AD measurement of different spheroid produces of agricultural products.

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History
  • Received:March 09,2016
  • Revised:
  • Adopted:
  • Online: July 10,2016
  • Published: July 10,2016
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