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arXiv 2202.06256cs.CV
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RandomSEMO:用于视频异常检测的运动对象正态性学习

RandomSEMO: Normality Learning Of Moving Objects For Video Anomaly Detection

Yonsei University(延世大学)

Chaewon Park, Minhyeok Lee, MyeongAh Cho, Sangyoun Lee

摘要:

最近的异常检测算法通过采用帧预测自编码器表现出强大的性能。然而,这些方法面临两个挑战性的情况。首先,它们可能被训练得过于强大,甚至可以很好地生成异常帧,这导致检测异常失败。其次,他们被前景和背景中捕捉到的大量物体分散了注意力。为了解决这些问题,我们提出了一种新的基于超像素的视频数据转换技术,称为随机超像素擦除移动对象(RandomSEMO)和移动对象丢失(MOLoss),建立在一个简单的轻量级自动编码器之上。RandomSEMO通过随机擦除它们的超像素来应用于移动对象区域。它强制网络关注前景对象,更有效地学习正常特征,而不是简单地预测未来帧。此外,MOLoss敦促模型通过放大移动对象附近像素的损失来专注于学习RandomSEMO中捕获的正常对象。实验结果表明,我们的模型优于国家的最先进的三个基准。

英文摘要:

Recent anomaly detection algorithms have shown powerful performance by adopting frame predicting autoencoders. However, these methods face two challenging circumstances. First, they are likely to be trained to be excessively powerful, generating even abnormal frames well, which leads to failure in detecting anomalies. Second, they are distracted by the large number of objects captured in both foreground and background. To solve these problems, we propose a novel superpixel-based video data transformation technique named Random Superpixel Erasing on Moving Objects (RandomSEMO) and Moving Object Loss (MOLoss), built on top of a simple lightweight autoencoder. RandomSEMO is applied to the moving object regions by randomly erasing their superpixels. It enforces the network to pay attention to the foreground objects and learn the normal features more effectively, rather than simply predicting the future frame. Moreover, MOLoss urges the model to focus on learning normal objects captured within RandomSEMO by amplifying the loss on the pixels near the moving objects. The experimental results show that our model outperforms state-of-the-arts on three benchmarks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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