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Agronomy 2018, 8(9), 178;

GainTKW: A Measurement System of Thousand Kernel Weight Based on the Android Platform

1,2,* and 1,2
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture, Hangzhou 310058, China
Author to whom correspondence should be addressed.
Received: 11 July 2018 / Revised: 17 August 2018 / Accepted: 3 September 2018 / Published: 10 September 2018
(This article belongs to the Special Issue Precision Phenotyping in Plant Breeding)
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Thousand kernel weight (TKW) is an important parameter for the evaluation of grain yield. The traditional measurement method relies on manual steps: weighing and counting. In this paper, we developed a system for the automated evaluation of thousand kernel weight that combines a weighing module and Android devices, called “gainTKW”. The system is able to collect the weight information from the weighing module through a serial port using the RS232-micro USB cable. In the imaging process, we adopt a k-means clustering segmentation algorithm to solve the problem of uneven lighting. We used the marker-controlled watershed algorithm and area threshold method to count the number of kernels that are touching one another. These algorithms were implemented based on the OpenCV (Open Source Computer Vision) libraries. The system tested kernel images of six species taken with the Android device under different lighting conditions. The algorithms in this study can solve the segmentation problems caused by shadows, as well. The appropriate numbers of kernels, of different species, are counted with an error ratio upper limit of 3%. The application is convenient and easy to operate. For the experiments, we can prove the efficiency and accuracy of the developed system by comparing the results between the manual method and the proposed application. View Full-Text
Keywords: thousand kernel weight; serial communication; image processing; Android thousand kernel weight; serial communication; image processing; Android

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Wu, W.; Zhou, L.; Chen, J.; Qiu, Z.; He, Y. GainTKW: A Measurement System of Thousand Kernel Weight Based on the Android Platform. Agronomy 2018, 8, 178.

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