Target attention non-directional confrontation attack method

The invention relates to the technical field of non-directional attack adversarial, and discloses a target attention non-directional attack adversarial method, which comprises the following steps: S1, carrying out target detection on an image through YOLOv4 to obtain a target area (represented by S1), S2, carrying out SOD on the image by using HVPNet to obtain a salient target area (represented by S2), and S3, carrying out SOD on the salient target area by using HVPNet to obtain a salient target area (represented by S2); and S3, generating an accurate target area (represented by S, S = S1 nS2) by taking an intersection of the two regions. According to the method, whether an incomplete detection phenomenon occurs or not is judged by using a significant region activation factor k, and when SOD detection is incomplete and an SOD detection result in S2 only contains a small part of a real target region, only a YOLOv4 detection result is used as estimation of an object region, and the SOD result is discarded. A la