Detecting tomatoes in greenhouse scenes by combining AdaBoost classifier and colour analysis

被引:100
|
作者
Zhao, Yuanshen [1 ]
Gong, Liang [1 ]
Zhou, Bin [1 ]
Huang, Yixiang [1 ]
Liu, Chengliang [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
关键词
Tomato detection; Haar-like feature; AdaBoost classifier; Colour analysis; I component image; OBJECT DETECTION; RECOGNITION; FRUIT; APPLES; NUMBER;
D O I
10.1016/j.biosystemseng.2016.05.001
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Despite the rapid development of agricultural robotics, a lack of access to automatic fruit detection and precision picking is limiting the commercial application of harvesting robots. An algorithm for the automatic detection of ripe tomatoes in greenhouse was developed for a simple machine vision system. The images of tomato planting scenes were captured by a colour digital camera, and most of the ripe tomatoes were correctly recognised using the proposed algorithm. The proposed tomato detection approach worked in two steps: (1) by extracting the Haar-like features of grey scale image and classifying with the AdaBoost classifier, the possible tomato objects were identified; (2) the false negatives in the results of classification were eliminated using average pixel value (APV) based colour analysis approach. Comparative test results showed that the C style of Haar-like features and I component image were optimum in the proposed algorithm. The results of validation experiments show that combination of AdaBoost classification and colour analysis can correctly detect over 96% of ripe tomatoes in the real-world environment. However, the false negative rate was about 10% and 3.5% of the tomatoes were not detected. (C) 2016 Published by Elsevier Ltd on behalf of IAgrE.
引用
收藏
页码:127 / 137
页数:11
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