ONVIF Releases Profile M for Metadata, Events
ONVIF has released Profile M, which standardizes metadata and events for analytics applications and expands pathways for use of metadata and event handling into other systems such as access control, cloud services and IoT platforms.
Profile M provides a standard way of communicating metadata between edge devices or services, such as IP cameras or analytics apps for devices, and clients, such as video management software (VMS), network video recorders or server- or cloud-based services. This means that systems integrators and end users can flexibly mix and match solutions from different providers of analytics, edge devices, and video management software or cloud services, together with IoT applications, into one system.
“ONVIF recognizes that the need for interoperability has evolved beyond the traditional relationship between a hardware device and software client from different vendors,” said Sriram Bhetanabottla, chair of the Profile M Working Group.
“The flexibility to include Cloud- and server-based services as conformant devices makes Profile M interesting also for independent developers of software-based analytics solutions. It will help drive the growth in the number and types of security, safety and operational efficiency applications available to end users.”
Analytics metadata can be used to highlight certain objects in a video stream, trigger automatic responses, and effectively store and search for video content of interest. Other uses include heat mapping in a retail store using human and geolocation metadata, and vehicle mapping in a parking lot using vehicle and geolocation metadata.
Profile M supports event handling interfaces for object counting, and face and license plate recognition (LPR) analytics, as well as JSON-formatted events over MQTT, a protocol for IoT applications. An example of an IoT use case can be for room temperature control, where a Profile M camera (with MQTT support) detects humans in a room and sends an ONVIF event over MQTT to an IoT platform or application that, in turn, triggers a smart thermostat to adjust the room temperature.
Profile M can be combined with other ONVIF video and access control profiles for an integrated system based on ONVIF interfaces.