Multistage Analysis of Abnormal Human Behavior in Complex Scenes

Abstract

Effective abnormal human behavior analysis serves as a warning signal before emergencies. However, most abnormal human behavior detections rely on manual monitoring at present. This method is criticized for being subjective and lack of timeliness. In response to the problems above, this paper proposes a multistage analysis method of abnormal human behavior in complex scenes. This paper firstly differentiates the abnormal behavior roughly from a large monitoring area with similarity measurement applied to the social force model, and precise analysis is conducted thereafter. The multistage analysis, based on the three-frame difference algorithm, is used for intrusion, left-behind baggage detection, and motion trajectory identification. The experimental result demonstrates the superiority of the proposed method in UMV, CAVIAR, and datasets. To demonstrate the adaptability and generalization ability of the proposed method, this paper selects the CVC and JAAD driving anomaly detection data sets to test the method. Experimental results show that the proposed method is superior to the existing methods.

Present status and challenges of underwater acoustic target recognition technology: A review

“…Cao et al [42] used sparse self-encoders to learn invariant features from underwater target spectra, combined with stacked autoencoders and softmax to achieve underwater target classification. Cai et al [43][44][45][46] introduced multi-perspective light field reconstruction into the field of underwater target recognition and implemented multi-target recognition based on a generative adversarial network. Feng et al [47] proposed a fusion feature and 18-layer residual network method to achieve the classification of underwater targets.…”

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“…However, the information extracted from a single image is limited. Aiming at the insufficient acquisition of target information, Cai et al [10][11][12] introduced multiview light field reconstruction into the target recognition field. The target information can be collected through multiple views, 13 that is, multi-AUV is used to recognize underwater dangerous targets.…”