Camera coverage & DORI

Placing a camera on a calibrated floor plan shows exactly what it can see: a field-of-view wedge on the plan, broken into DORI bands so you know not just where the camera points but how much detail it can resolve at each distance.

Before you start

The floor plan must be calibrated, the same requirement as SPL coverage. Each camera product also needs a horizontal field of view and a range set in your catalog, and its category needs to read as a camera type (camera, dome, PTZ, bullet, turret, fisheye, or thermal) for Avitly to recognise it as one.

Set up a camera's spec

1. On the product's Camera tab in your catalog, enter the horizontal and vertical field of view in degrees, straight off the manufacturer's spec sheet.
2. Enter Range in metres: this is the recognise distance (the R in DORI), the distance at which a person can be told apart from an object.
3. Vendors rarely publish a working distance in metres, only degrees, so Avitly shows an estimate for common sensor resolutions (4K, 4MP, 1080p) worked out from the field of view, so you can read off a sensible range to enter rather than guessing.

Place and aim

1. Drag the camera onto the floor plan like any device.
2. Turn on the camera coverage layer to see its field of view.
3. Rotate the camera to aim it, and tilt it down toward the floor; a steep enough tilt shortens the visible reach, since the field of view's top edge hits the floor before the camera's full rated range.

Reading the DORI bands

The wedge is drawn as four stacked bands, scaled off the range you entered: identify (closest, most detail), recognise (matches the range you entered), observe, and detect (farthest, least detail), each corresponding to a lower pixel density on the subject as distance increases. The bands darken toward the camera the way real coverage-planning tools show it, so a quick glance tells you where a face is identifiable versus merely detected.

Tips

• A camera with no field of view or no matching category set does not draw a wedge; the coverage layer simply skips it.
• Diagonal field of view is never needed as an input: Avitly derives everything from the horizontal and vertical figures you enter.
• The near zone right under the camera is not drawn, matching how coverage-planning tools typically present it: the wedge starts at the camera and reaches out to the DORI range.

See also Floor plans and SPL coverage heatmap.