DORI

To produce a better understanding of your proposed camera view/s, an industry standard has been produced called ‘DORI’ which is an acronym for:

• Detect
• Observe
• Recognise
• Identify

These measurements are calculated by several factors, these being:

• Camera Installation height
• Distance/target required from camera
• Target height
• Sensor format
• Focal length (Lens)
• Camera resolution

These particulars would produce not just the ‘FOV’, (Field of View) along with ‘Horizontal angle’. But the ‘DORI’ measurements/scale, giving a better understanding of your views.