In the world of CCTV, DORI stands for Detection, Observation, Recognition and Identification.

• Detection - The detection level allows for reliable and easy determination of whether a person or vehicle is present.

• Observation - The observation level gives characteristic details of an individual, such as distinctive clothing, while allowing a view of activity surrounding an incident.

• Recognition - The recognition level determines with a high degree of certainty whether an individual shown is the same as someone that has been seen before.

• Identify - The identification level enables the identity of an individual beyond a reasonable doubt.

Here is a blog post and video explaining what DORI is.

What is DORI