雷尔维德:使用视觉语言模型进行关系式学习,用于弱视频异常检测
Jingxin Wang1,2, Guohan Li1,3, Jiaqi Liu1
1Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
RelVid通过扩大功能空白以辅助任务来增强弱监督的视频异常检测. 这种新的框架提高了在没有框架级监督的情况下识别异常事件的准确性和稳定性.
科学领域:
- 计算机视觉 计算机视觉
- 机器学习 机器学习
背景情况:
- 弱监督的视频异常检测是具有挑战性的,因为缺乏级标签.
- 传统方法与依赖上下文的正常/异常事件界限和有限的特征表示作斗争.
研究的目的:
- 引入RelVid,这是一个改进弱监督视频异常检测的新型框架.
- 通过扩大阶级之间的相对特征差距来增强特征的歧视力.
主要方法:
- RelVid集成了辅助任务:基于文本的异常检测和功能重建学习.
- 包含类激活功能学习和时间注意模块,用于改进歧视和顺序分析.
主要成果:
- 在UCF-犯罪和XD-暴力基准数据集上,RelVid表现优越.
- 与现有方法相比,在检测准确性和稳定性方面取得了最先进的结果.
结论:
- RelVid有效地解决了监督不足的异常检测方面的局限性.
- 该框架的辅助任务和组件在复杂的场景中显著提高了性能.
相关概念视频
Vision
52.4K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
52.4K
Associative Learning
249
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
249
Observational Learning
102
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
102


