FOV · PPM Calculator
Pick a camera model and focal length to get the horizontal FOV, coverage width and PPM-based identification levels.
View in 3D — Use FOV 3D to check mounting height, tilt and blind spots in 3D space.
See this setup in 3D ↗Camera View Simulation
Distance Check (DORI · AI Analytics)
Threshold not confirmedCalculated from the camera, mounting and target settings above.
AI Video Analytics Range
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Max Distance for Human Viewing (DORI)
Per EN 62676-4DORI levels are defined for people. They are not defined for vehicles, so no distances are shown.
Ground distance, accounting for mounting height. This is the farthest point that meets each level's PPM; check the table below to see whether the target is in frame. The side view enlarges the near side (not to scale).
Each thumbnail draws a person's upper body (about 50cm) with the number of pixels it gets at that level. With few pixels it is just a blob.
What are DORI levels? (EN 62676-4)
EN 62676-4 is the application guidelines part of the European video surveillance system (VSS) standard series EN 62676 (international edition: IEC 62676-4). It defines what an operator can do based on how many pixels cover 1m of the target (PPM).
DORI stands for Detection · Observation · Recognition · Identification. The standard also defines a wider Monitor level and a finer Inspection level.
| Level | PPM | In plain terms |
|---|---|---|
| Monitor | 12.5 | See the number and flow of people or vehicles over a wide area |
| Detection | 25 | You can tell something is there |
| Observation | 62.5 | You can see clothing colors and actions |
| Recognition | 125 | You can tell who it is if you know the person |
| Identification | 250 | You can establish the identity of a stranger |
| Inspection | 1000 | Zoom in on fine details such as tattoos or carried items |
DORI describes what a human viewer can see. For AI video analytics, see 'AI Video Analytics Range' above and the 'AI analytics' column in the table below.
By Distance
| Ground distance | Target height (px) | PPM | Human viewing (DORI) | AI analytics |
|---|
Theoretical values for reference only. Actual results vary with lighting, weather, backlight, mounting angle and analytics engine version.
Storage Needed for This Camera
Open full reportPPM (Pixels Per Meter) Guide
PPM is the number of pixels covering 1m of width in the image and indicates identification capability. Higher resolution or a narrower FOV gives higher PPM. For level thresholds, see 'What are DORI levels?' above.