Target detection method and device

The invention discloses a target detection method and device, and relates to the field of data processing. The objective of the invention is to solve the problem of low accuracy of small target detection in the prior art. The technical scheme provided by the embodiment of the invention comprises the steps of obtaining a to-be-detected file; detecting the to-be-detected file through a pre-trained target detection model to obtain a to-be-detected target; wherein the pre-trained target detection model is obtained by training an extended YOLOv3 model through a picture containing the target in advance, and the extended YOLOv3 model is a model obtained by performing scale extension on a preset initial YOLOv3 model. The scheme can be applied to target detection of pictures, short videos and the like. 本发明公开了一种目标检测方法和装置，涉及数据处理领域。为解决现有技术小目标检测的准确率较低的问题而发明。本发明实施例提供的技术方案包括：获取待检测文件；通过预先训练的目标检测模型对所述待检测文件进行检测，得到需要检测的目标；所述预先训练的目标检测模型为预先通过含有所述目标的图片对扩展YOLOv3模型进行训练得到的，所述扩展YOLOv3模型为对预设初始YOLOv3模型进行尺度扩展后的模型。该方案可以应用在对图片、短视频等的目标检测中。