Journal
APPLIED SCIENCES-BASEL
Volume 13, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/app13020895
Keywords
counting tree seedlings; object detection; convolutional neural networks; YOLOv5
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Tree-counting methods based on computer vision technologies are low-cost and efficient alternatives to traditional methods. This study proposes a deep learning algorithm for detecting and counting tree seedlings in images, which has high economic value and broad application prospects. The method can accurately identify and count different types of tree seedlings, as demonstrated by the experimental results. The proposed method can provide technical support for tree counting tasks.
Tree-counting methods based on computer vision technologies are low-cost and efficient in contrast to the traditional tree counting methods, which are time-consuming, laborious, and humanly infeasible. This study presents a method for detecting and counting tree seedlings in images using a deep learning algorithm with a high economic value and broad application prospects in detecting the type and quantity of tree seedlings. The dataset was built with three types of tree seedlings: dragon spruce, black chokeberries, and Scots pine. The data were augmented via several data augmentation methods to improve the accuracy of the detection model and prevent overfitting. Then a YOLOv5 object detection network was built and trained with three types of tree seedlings to obtain the training weights. The results of the experiments showed that our proposed method could effectively identify and count the tree seedlings in an image. Specifically, the MAP of the dragon spruce, black chokeberries, and Scots pine tree seedlings were 89.8%, 89.1%, and 95.6%, respectively. The accuracy of the detection model reached 95.10% on average (98.58% for dragon spruce, 91.62% for black chokeberries, and 95.11% for Scots pine). The proposed method can provide technical support for the statistical tasks of counting trees.
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