Improving search for license plates with Milestone

January 23, 2020
Axis has partnered with global leading video management system (VMS) provider Milestone and two of its video analytic application (ACAP) partners to offer a smarter way to search for, recover, identify and share video evidence about vehicles.

AXIS Optimizer forensic search plug-in provides an efficient means to find video evidence in Milestone XProtect using metadata from automatic license plate recognition (LPR) ACAPs from Axis and third-party vendors. VMS operators save significant time and costs using this serverless, camera-based solution for a range of on- and off-street applications. Axis cameras with embedded LPR analytics deliver a broad range of metadata — such as type of vehicle, brand, color etc. — that is then stored as search criteria in the VMS database. Having all data types aggregated in one VMS search database makes for quick, easy and efficient investigations.

Watch the video to see how AXIS Optimizer forensic search plug-in works. It is available to download for free in AXIS Optimizer (version 3.5 and up) at

LPR metadata boosts intelligence in video

A range of Axis cameras support embedding ACAPs available from both Axis and third party vendors. The first release of AXIS Optimizer forensic search is focused on LPR-based ACAPs. It makes it possible to search for vehicle-specific metadata in Milestone XProtect derived from AXIS License Plate Verifier from Axis as well as from LPR ACAPs from Vaxtor and FF Group. These combine to give XProtect users search results of video based on:

  • Vehicle’s type, brand, model, color and speed
  • License plate number and country of origin
  • Date and time the video was recorded

Some practical applications of this solution include:

  • Lane and traffic light enforcement control
  • Traffic management
  • Toll collection
  • Vehicular crime investigations
  • Parking lot security.

Fast and accurate results

This solution allows users to collect important traffic data and manage all aspects — from automatically detecting license plates to getting forensic search results. Vehicle and plate detection, recognition and classification is performed inside the camera before being sent to the VMS.

Using Power of Ethernet (PoE) IP cameras to process and manage metadata keeps costs low compared to server-based processing. Plus, each ACAP and camera are optimized to ensure high-quality video and analytics with optical zoom, autofocus, OptimizedIR, electronic image stabilization, shutter speed and other important camera settings. Depending on which ACAP is used, results typically deliver detection rates of >97% with up to 95% recognition rates.

How Axis Optimizer forensic search plug-in for Milestone XProtect works

Detect. Recognize. Classify.

Performed by the video cameras running LPR applications. Axis offers a range of LPR cameras optimized for specific use cases. Built-in LPR ACAPs include those branded by Axis and its partners.


Milestone XProtect receives and stores all metadata. All in one place. In the familiar XProtect interface.

Search and Get evidence

The solution empowers users to quickly and accurately search for, find and export video evidence. 

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Madeleine Eibrand
For further information, please contact: Madeleine Eibrand, Communications Specialist, Axis Communications
Phone: +46 46 272 18 00
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