Patent Tech Sheet: TTC.PA.1623

TTC.PA.1623 : CONSTRUCTION SITE SAFETY
COMPLIANCE MONITORING
ENRICHED BY MULTI-CAMERA
WORKER RE-IDENTIFICATION

PROBLEM ADDRESSED

Construction worker re-identification and personal protective equipment detection across multiple cameras for continuous monitoring of site safety compliance over a large site area

APPLICATION AREAS

  1. Smart construction
    workers’ safety & site analysis
  2. Smart transportation
    traffic flow analysis
  3. Smart mobility
    walkability evaluation
  4. Aging city
    elderly mobility improvement
  5. Smart retail
    behavioural analysis

TECHNOLOGY INNOVATIONS

A new loss function named Similarity Loss facilitates ReID robustness of different convolutional neural networks

A weighted-class model training strategy to enhance PPE classification given an imbalanced number of samples

A mechanism of incident logging to identify PPE safety incompliance of workers walking over a large site area

KEY IMPACTS & ADVANTAGES

  • Accurate worker ReID
    4%
    improvement over baselines
  • PPE classification
    13%
    improvement over baselines
  • Efficiently identity unsafe behaviour of workers on construction sites
  • Continuously log down any incident of safety incompliance for devising safety measures

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