
Street-Lying Person Detection

Algorithm Introduction
Based on AI vision algorithms, this system is specifically designed to detect recumbent pedestrians (particularly intoxicated individuals) in nighttime road and curb scenarios, outputting bounding boxes and counts of detected individuals. It effectively reduces safety hazards and emergency incidents, safeguarding citizens' personal and property safety.
- ● Brightness requirements: The ratio of bright pixels (grayscale value >40) to total pixels in the scene must exceed 50%
- ● Image requirements: Optimal detection performance at 1344×768 resolution
- ● Target size: For 1080p (1920×1080) video streams, detection range is 60×120 pixels (minimum) to 512×512 pixels (maximum)
Application Value
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Urban Roadways
Real-time monitoring of urban roads enables rapid detection of individuals lying on the roadway, providing timely alerts to prevent traffic accidents and safeguard pedestrian safety. -
Night Market/Food Stall Areas
Targeting night markets and food stalls where crowds gather densely at night and alcohol consumption is common, the AI algorithm accurately identifies individuals lying down to mitigate safety risks.
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.


