Abstract

Flocks of birds may cause major damage to fruit crops in the ripening phase. This problem is addressed by various methods for bird scaring; in many cases, however, the birds become accustomed to the distraction, and the applied scaring procedure loses its purpose. To help eliminate the difficulty, we present a system to detect flocks and to trigger an actuator that will scare the objects only when a flock passes through the monitored space. The actual detection is performed with artificial intelligence utilizing a convolutional neural network. Before teaching the network, we employed videocameras and a differential algorithm to detect all items moving in the vineyard. Such objects revealed in the images were labeled and then used in training, testing, and validating the network. The assessment of the detection algorithm required evaluating the parameters precision, recall, and F1 score. In terms of function, the algorithm is implemented in a module consisting of a microcomputer and a connected videocamera. When a flock is detected, the microcontroller will generate a signal to be wirelessly transmitted to the module, whose task is to trigger the scaring actuator.

Highlights

  • Received: 28 May 2021Accepted: 18 June 2021Published: 21 June 2021Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.The protection of fruit crops from raiding flocks of birds constitutes a major problem for fruit farmers and winegrowers

  • Evaluated items are introduced within the true positive (TP) set

  • The false negative (FN) detections group comprises all items that were not evaluated as belonging to a given class but fit within it

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Summary

Introduction

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. The protection of fruit crops from raiding flocks of birds constitutes a major problem for fruit farmers and winegrowers. One of the most prominent pests in this respect is the European starling (Sturnus vulgaris), whose immense flocks feeding on fruit in large orchards and vineyards are perfectly capable of ruining the entire harvest [1]. Diverse measures are being taken to prevent this beautiful passerine from attacking fruit fields and wine-growing areas, with the relevant efforts and applicable techniques usually conceived or designed to be physically harmless to the bird. The scaring methods involve mechanical, optical, and acoustic approaches, in addition to utilizing natural enemies

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