Inicio  /  Future Internet  /  Vol: 14 Par: 11 (2022)  /  Artículo
ARTÍCULO
TITULO

Real-Time Image Detection for Edge Devices: A Peach Fruit Detection Application

Eduardo Assunção    
Pedro D. Gaspar    
Khadijeh Alibabaei    
Maria P. Simões    
Hugo Proença    
Vasco N. G. J. Soares and João M. L. P. Caldeira    

Resumen

Within the scope of precision agriculture, many applications have been developed to support decision making and yield enhancement. Fruit detection has attracted considerable attention from researchers, and it can be used offline. In contrast, some applications, such as robot vision in orchards, require computer vision models to run on edge devices while performing inferences at high speed. In this area, most modern applications use an integrated graphics processing unit (GPU). In this work, we propose the use of a tensor processing unit (TPU) accelerator with a Raspberry Pi target device and the state-of-the-art, lightweight, and hardware-aware MobileDet detector model. Our contribution is the extension of the possibilities of using accelerators (the TPU) for edge devices in precision agriculture. The proposed method was evaluated using a novel dataset of peaches with three cultivars, which will be made available for further studies. The model achieved an average precision (AP) of 88.2% and a performance of 19.84 frames per second (FPS) at an image size of 640 × 480. The results obtained show that the TPU accelerator can be an excellent alternative for processing on the edge in precision agriculture.

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