Portrait instance tracking and segmenting system, method and device and storage medium

The invention discloses a portrait instance tracking and segmenting system, method and device and a storage medium, and relates to an image data processing technology and a backbone network unit, comprising n feature extraction network layers, inputting a to-be-processed image into the backbone network unit, and outputting n feature layers; the m independent target detection sub-network units are respectively connected to the last m feature layers of the feature extraction network layer to predict the position of a target; the feature sampling unit is used for sampling more than one feature extraction network layer according to the output target of each layer of target detection sub-network unit; the segmentation sub-network unit is connected with the feature sampling unit, receives a plurality of target sampling results, and predicts a segmentation mask according to the target sampling results; the invention provides a segmentation sub-network for carrying out feature sampling on a feature layer of multiple