Farmland Pest Detection Based on YOLO-V5l and ResNet50

Abstract

At present, China’s farmland is increasingly affected by insect pests. Insect situation analysis can formulate different plans to control farmland pests according to the insect situation in different regions. Traditional pest situation analysis relies on manual collection and statistics, which is time-consuming and labor-consuming. With the development of deep learning technology in the field of computer vision, this paper proposes to build a farmland pest detection model by combin-ing YOLO-V5l target detection and ResNet50 neural network. Insects have the characteristics of diverse body shapes, missing scales and falling limbs in the image data, which have a great impact on the target detection and classification. Therefore, this paper roughly classifies 28 pests into seven A~G species according to their body shapes and colors, uses YOLO-V5l model to detect and count them, and then substitutes the detection results into ResNet50 recognition model to deter-mine their species. This method greatly reduces the false detection rate of farmland pest detection. Moreover, this paper proposes a predictive enhancement algorithm. After the pest images to be detected are enhanced, they are brought into the recognition model respectively, and the recognition results are weighted average to get the final results. mAP.5:.95 of single YOLO-V5l model was 71.4%, the average accuracy rate was 80.91%, and the missed detection rate was 5.39%. The average accuracy of the pest detection model proposed in this paper is 89.56%, which improves the recognition accuracy of farmland pests. The model will improve the shortcomings of original artificial statistics and promote the development of Intelligent Agriculture in China.