
Abnormal Behavior Recognition

Algorithm Introduction
Utilizing AI vision algorithms to monitor abnormal behaviors such as loitering, wall-climbing, and falling within campus surveillance areas in real time, while extracting human and facial features/attributes from alarm events to assess potential security risks.
Technical Specifications:
Technical Specifications:
- ● Lighting Conditions:
- Minimum 50% bright pixel ratio in pedestrian areas (pixels with grayscale value >40)
- ● Image Requirements:
- Optimal detection performance at 1920×1080 resolution
- ● Target Size Constraints:
- Minimum detectable target: 32×32 pixels
- Maximum detectable target: 512×512 pixels
- (Based on 1080p/1920×1080 standard video stream)
Application Value
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Storage/Operation Areas
The algorithm rapidly detects behaviors such as running and unauthorized climbing to prevent operational safety incidents. -
Facility Entrances/Exits
The algorithm identifies abnormal loitering and tailgating behaviors at facility access points. This effectively deters unauthorized personnel movement and strengthens perimeter access control.
FAQ
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Algorithm AccuracyAll algorithms published on the website claim accuracies above 90 %. However, real-world performance drops can occur for the following reasons:
(1) Poor imaging quality, such as
• Strong light, backlight, nighttime, rain, snow, or fog degrading image quality
• Low resolution, motion blur, lens contamination, compression artifacts, or sensor noise
• Targets being partially or fully occluded (common in object detection, tracking, and pose estimation)
(2) The website provides two broad classes of algorithms: general-purpose and long-tail (rare scenes, uncommon object categories, or insufficient training data). Long-tail algorithms typically exhibit weaker generalization.
(3) Accuracy is not guaranteed in boundary or extreme scenarios.
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Deployment & InferenceWe offer multiple deployment formats—Models, Applets and SDKs.
Compatibility has been verified with more than ten domestic chip vendors, including Huawei Ascend, Iluvatar, and Denglin, ensuring full support for China-made CPUs, GPUs, and NPUs to meet high-grade IT innovation requirements.
For each hardware configuration, we select and deploy a high-accuracy model whose parameter count is optimally matched to the available compute power.
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How to Customize an AlgorithmAll algorithms showcased on the website come with ready-to-use models and corresponding application examples. If you need further optimization or customization, choose one of the following paths:
(1) Standard Customization (highest accuracy, longer lead time)
Requirements discussion → collect valid data (≥1 000 images or ≥100 video clips from your scenario) → custom algorithm development & deployment → acceptance testing
(2) Rapid Implementation (Monolith:https://monolith.sensefoundry.cn/)
Monolith provides an intuitive, web-based interface that requires no deep AI expertise. In as little as 30 minutes you can upload data, leverage smart annotation, train, and deploy a high-performance vision model end-to-end—dramatically shortening the algorithm production cycle.





