Journal
ENGINEERING JOURNAL-THAILAND
Volume 24, Issue 4, Pages 85-96Publisher
CHULALONGKORN UNIV, FAC ENGINEERING
DOI: 10.4186/ej.2020.24.4.85
Keywords
Color analysis; object detection; machine vision; seed germination; agriculture
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Funding
- Faculty of Agriculture, Ubon Ratchathani University
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This research was designed to investigate an automatic seed germination rate for the top of paper germination method. Chili and guinea were adopted to be used in the experiment with a 4-time repetition and 2 sets of the germination group (4-separated plates with 50 seeds per plate, 2 sets per seed type, totally 400 seeds of chili and 400 seeds of quinea). Two detection methods were proposed binary thresholding and maximum likelihood; based on color analysis. An uncontrolled environment image taking was the way to collect image data. The results were compared to a hand-labeling groundtruth. Both methods achieved accuracy rate higher than 93% which was promising to implement this system. The binary thresholding was a lightweight method suitable for a very limited resource software environment system. The maximum likelihood was more complex. The method had more potential than the binary thresholding, it was flexible to the light condition, returned few false alarms per image (less than 3 false alarms per image). Maximum likelihood could be adopted to implement in a proper environment which still could be in a mobile device.
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