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OODPCVS Calculator (IEC 62676-4:2025)
Pixel-density distances for the new 7-step coverage ladder — Overview through Scrutinise — computed in real time.
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1080p Full HD (2MP)
Computed HFOV
68.0°
OODPCVS distances (7-step ladder)
Overview · 20 PPM
71.1m
Notice motion or general scene activity
Outline · 40 PPM
35.6m
Distinguish rough object shape
Discern · 80 PPM
17.8m
Tell object categories apart (person vs cart)
Perceive · 125 PPM
11.4m
Read posture and behaviour (≈ DORI Recognize)
Characterise · 250 PPM
5.7m
Identify a known person (≈ DORI Identify)
Validate · 500 PPM
2.8m
Facial / licence-plate verification
Scrutinise · 1500 PPM
0.9m
Passport-grade biometric capture
With a 1080p camera on a 1/2.8" sensor and a 4.0 mm lens, OODPCVS Characterise (250 px/m, ≈ DORI Identify) is reachable up to 5.7 m. Beyond that you drop to Perceive — read posture but cannot reliably identify the person.
What is OODPCVS?
OODPCVS is the seven-step pixel-density ladder introduced by IEC 62676-4:2025. It sits alongside the legacy DORI four-step ladder (Detection, Observation, Recognition, Identification) and gives procurement teams finer-grained coverage targets — including levels above DORI Identify for facial verification and passport-grade biometrics.
- Overview (20 px/m) — situational awareness, motion-only triggers.
- Outline (40 px/m) — distinguish coarse object shapes.
- Discern (80 px/m) — tell object categories apart (person vs. trolley).
- Perceive (125 px/m) — read posture, gesture, behaviour. Equivalent to DORI Recognize.
- Characterise (250 px/m) — identify a known person. Equivalent to DORI Identify.
- Validate (500 px/m) — face or licence-plate verification suitable for evidentiary use.
- Scrutinise (1500 px/m) — passport-grade biometric capture.
The underlying math is identical to DORI — pixels per metre on the target — but the new ladder lets you specify coverage in three to seven discrete bands instead of the legacy four. Tenders citing IEC 62676-4:2025 increasingly require OODPCVS levels in addition to (or instead of) DORI.
Design with OODPCVS in mind
Use CCTVplanner to drop cameras on a real map, switch each one between DORI and OODPCVS, and export a tender-ready PDF with both ladders side by side.