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Camera requirement (DORI / OODPCVS)

The minimum resolution and field of view the camera must have to meet, in this zone, the quality level the client needs.

Standards & referencesIEC/EN 62676-4:2014 — DORI frameworkIEC/EN 62676-4:2025 — OODPCVS framework

Each edition has its own scale. The result declares which was used — one is never converted into the other.
Minimum horizontal resolution—
Minimum HFOV—
Target density—
Level and standard—

How it is calculated

  1. Pick the standard and, within it, the operational level you need. Each level has a minimum density in pixels per metre set by the corresponding edition of IEC/EN 62676-4.
  2. Minimum resolution is that density times the width to cover: resolution = density × width. Distance does not enter the resolution calculation — it enters the choice of optics, through the HFOV. Two cameras at different distances covering the same width need the same resolution, but different lenses.
  3. Maximum field of view comes from geometry: HFOV = 2 · atan(width ÷ (2 × distance)). Resolution and HFOV form the vendor-neutral requirement any supplier can answer.

A decision-support estimate. For full sizing — on the real floor plan, both standards in parallel, theoretical and corrected, and the vendor-neutral spec — use B-PLAN.

Open B-PLAN →

The four calculators, in order

Each answers one question and hands its result to the next. Together they follow the same path B-PLAN takes on the real floor plan.

1Camera requirementWhat the system has to be able to seeYou are here
2Lens & field of viewWhich optics meet that requirement3PoE budgetWhat power the installation needs4StorageWhat capacity holds the retention period