How Low Can You Go? Performance Trade-offs in Low-Resolution Thermal Sensors for Occupancy ...
summary
Systematic evaluation uses TIDOS and proprietary datasets, a preprocessing + blob-detection + flow-counter pipeline, and controlled frame-rate/resolution downsampling to measure accuracy. Results show 4×2 resolution supports reliable occupancy when frame rate is ≥4 fps; the lowest tested 2×2 at ≥16 fps can work but needs careful viewing-angle alignment. Frame rates <2 fps drop accuracy, viewing angles matter (best ~42–55° along paths, ~50–75° across doors), and low-res deployment cuts hardware costs by about 97% while preserving identity privacy.
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