Glossary Definition

What is DORI (Detection, Observation, Recognition, Identification) and why is it important for CCTV/ IP Surveillance cameras

DORI is an industry standard that defines how much detail in PPM (Pixels Per Meter) a visible surveillance camera needs to provide to obtain Detection, Observation, Recognition, Identification. This will be specified as a distance rating usually in Meters or Kilometers but can also be defined in miles and feet. Just as gas mileage tells you the rated fuel efficiency of a car, DORI and PPM defines how much detail a camera is providing tied to a specific distance.

•   Detection 25PPM- The detection level allows for reliable and easy determination of whether a person or vehicle is present.

•   Observation 62PPM - The observation level gives characteristic details of an individual, such as distinctive clothing, while allowing a view of activity surrounding an incident.

•   Recognition 125PPM - The recognition level determines with a high degree of certainty whether an individual shown is the same as someone that has been seen before.

•   Identification 250PPM - The identification level enables the identity of an individual beyond a reasonable doubt.

The DORI standard that is based on the IEC EN62676-4: 2015 International Standard, which defines different levels of detail for Detection (25PPM), Observation (62PPM), Recognition (125PPM), and Identification (250PPM) for visible light surveillance cameras. 
The goal of DORI is to provide a benchmark and rating system to define how far a camera will see at different ranges based on how much detail is required. For DORI, Detection only requires 25PPM (Pixel Per Meter) whereas Identification requires 250PPM so a visible camera rating for detection is 10x the distance compared to its identification rating. Of course, some customers will want more detail than what is specified by DORI, and some will require less. It is always best to use DORI as a baseline and ensure that the camera is providing enough detail to meet the expectations and requirements for a specific project. That will may differ from the standard as the terms Detection, Observation, Recognition, and Identification are quite subjective, and are based on individual preferences. Therefore, surveillance cameras should be designed based on your day and night requirements for detail and distance, especially for long range surveillance.

In addition to VIS/NIR and thermal, Infiniti also offers active IR illumination,
SWIR, and other sensors such as LRF, Radar and more. We do not limit our
customers to any one technology; rather we custom build solutions that
typically use multiple sensors depending on the project.

At Infiniti we excel at designing customized systems to suit your specific
needs. We can examine your situational requirements, location conditions
and project budget and recommend the best system (or systems) available
within that budget. We are also experienced in configuring multi-camera
systems complete with multichannel recording, wired or wireless networking,
access control, radar integration and more.

Contact us today for our expert advice on the ideal solution for you.

Full Glossary