Abstract: Few-shot object detection aims to train target detection model through a small amount of sample learning.At present,most of the existing few-shot object detection methods are based on classical target detection algorithms.In the two-stage detection method,due to the small number of new class samples,many irrelevant border boxes are generated,resulting in low accuracy of candidate regions.To solve this problem,this paper proposes a few-shot object detection algorithm FF-FSOD based on feature fusion.It uses the feature fusion method to enhance the data,supplements the new category samples,increases the coverage range of the sample,and introduces the FPN network to extract multi-scale feature.Then,the RPN network is improved,and the support set image branch is introduced.The depth correlation between the support set image feature and the query set image feature is calculated,and the attention feature map is obtained,and the more accurate candidate box is obtained.The effectiveness of the proposed model is verified on MS COCO and FSOD datasets.Experimental results show that the proposed method obtains more accurate candidate boxes and improves the detection accuracy.

Key words: Few-shot learning, Object detection, Deep learning, Feature fusion, Feature pyramid