Why does XProtect LPR ignore plates that look readable on screen?

Answered by ANPR AI·Sourced

Short answer

The character-height range may exclude them.

Explanation

The engine will not start recognition if characters fall outside its configured minimum or maximum.

Things to check

  • Character-height overlay
  • Actual plate size

What to do

Adjust the range to the characters in representative snapshots and validate configuration. Keep the range reasonably tight to avoid unnecessary processing.

Source

Milestone: Configuring cameras for LPR

Scope and version

Unversioned latest online guide; checked 3 October 2026

ANPR Edge

Skip the dedicated ANPR camera. Read plates from the cameras you already have.

ANPR Edge is plate-recognition software that runs on a PC at your site and works with ordinary IP cameras, so plate reads no longer depend on one vendor's camera, NVR or firmware.

  • Works with standard IP cameras over RTSP
  • One license per location covers every camera
  • Runs on a Windows PC or Mac you own

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