Study on sorting system for strawberry using machine vision, 2: Development of sorting system with direction and judgement functions for strawberry (Akihime variety)
2000
Bato, P.M. (University of tha Philippines at Los Banos, Laguna) | Nagata, M. | Cao, Q. | Hiyoshi, K. | Kitahara, T.
In this study, a sorting software and system with direction and judgment functions were developed for automatic strawberry sorting. After the correct direction was decided by using the direction software in Part 1, the developed software classified the strawberry according to shape and size. Shape judgment was based on the ratio of the area from the maximum diameter to the top of the strawberry image and the product of the maximum diameter and the height while size judgment was based on the projected area of the strawberry image. The sorting system consisted of the software and the hardware components. The software component had the direction and size-shape judgment softwares. The system's hardware is composed of the belt conveyer, robot, personal computer and CCD camera. According to the results of the sorting experiments using strawberries of Akihime variety, high average shape and size judgment accuracies of 98.6 and 100%, respectively, were obtained regardless of fruit orientation angle. The judgment time was within 1.18 seconds. Therefore, the validity of the developed sorting system was confirmed
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