Abstract
The rapid and accurate identification of sugarcane stem nodes in the complex natural environment is essential for the development of intelligent sugarcane harvesters. However, traditional sugarcane stem node recognition has been mainly based on image processing and recognition technology, where the recognition accuracy is low in a complex natural environment. In this paper, an object detection algorithm based on deep learning was proposed for sugarcane stem node recognition in a complex natural environment, and the robustness and generalisation ability of the algorithm were improved by the dataset expansion method to simulate different illumination conditions. The impact of the data expansion and lighting condition in different time periods on the results of sugarcane stem nodes detection was discussed, and the superiority of YOLO v4, which performed best in the experiment, was verified by comparing it with four different deep learning algorithms, namely Faster R-CNN, SSD300, RetinaNet and YOLO v3. The comparison results showed that the AP (average precision) of the sugarcane stem nodes detected by YOLO v4 was 95.17%, which was higher than that of the other four algorithms (78.87%, 88.98%, 90.88% and 92.69%, respectively). Meanwhile, the detection speed of the YOLO v4 method was 69 f/s and exceeded the requirement of a real-time detection speed of 30 f/s. The research shows that it is a feasible method for real-time detection of sugarcane stem nodes in a complex natural environment. This research provides visual technical support for the development of intelligent sugarcane harvesters.
Highlights
In 2019, Shangping Li et al [20] introduced the object detection technology for sugarcane stem node recognition based on deep learning, which was applied in the sugarcane cutting process for the first time
The research of this paper focuses on the recognition of sugarcane stem nodes in the field under the complex natural environment, which is still not understood at present
V4 in the natural environment was introduced in this paper for the first time and achieved rapid and accurate recognition of sugarcane stem nodes during harvest in the natural environment, while the robustness and generalisation ability of the algorithm were improved by the dataset expansion method to simulate different illumination conditions
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. In 2019, Shangping Li et al [20] introduced the object detection technology for sugarcane stem node recognition based on deep learning, which was applied in the sugarcane cutting process for the first time. It used an improved YOLO v3 network to establish an intelligent recognition convolutional neural network model. Sci. 2021, 11, 8663 proposes a sugarcane stem node recognition algorithm based on deep learning driven by big data in the natural environment. The object detection algorithm based on deep learning can learn and understand the characteristics of different sugarcane stem nodes in the natural environment by learning big data
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