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Blue Iris Integration

Setting up Plate Recognizer to run with Blue Iris and your choice of cameras is easy. Just follow the steps below:

  • Set Up Cameras: You can use any IP camera you wish.  Read tips on how to set up your cameras for ANPR.
  • Download Blue Iris: Go download Blue Iris and then install it on a Windows PC.
  • Connect Cameras: Hook up cameras to Blue Iris Video Management Software.
  • Activate Plate Rec: Blue Iris is pre-integrated with Plate Recognizer.  Just enter in the Plate Rec API info.
  • Set Motion Detection: See steps below to set Motion Detection.
  • Optimize Motion Detection: for Vehicles. When motion is triggered in BI, it will automatically send image to Plate Recognizer. By setting up Zones and also Weights in motion detection, we can avoid animals running across the road. Why? Because the motion will be triggered by a “heavy object” that passes from Zone A to Zone B.
  • See Dashboard: Get full results of decoded plates in Plate Recognizer Dashboard.
  • Use Webhooks: Forward the decoded plate info to another system using our Webhooks.  This feature is mainly for software developers!

Helpful Links

Recommended hardware specs for Blue Iris

Blue Iris Free Trial

Blue Iris Official Support Forum

Activate Plate Recognizer in Blue Iris

Step 1. Sign up on Plate Recognizer.

Step 2. You will be given a Plate Recognizer API Cloud Token in

Please note that the Free Trial API Cloud Plan has a 1 lookup per second limit. If you send more than 1 lookup per second, the other image(s) within that second will be ignored by our Snapshot API Cloud.

Step 3. In Blue Iris, select the camera you want for ALPR. Then select Trigger Tab.

In the Trigger Tab, make sure to select Store alert images as hi-res files.  Make sure that the filesize is under 3 MB.  

Step 4. Enter your Plate Recognizer Token.

That’s it! You have successfully integrated Blue Iris with Plate Recognizer.

Stuck? Contact Us for assistance.

Configure Blue Iris Motion Detection for ALPR

Blue Iris has many features and capabilities to set up motion detection for LPR.  We recommend you watch this helpful video from Cajoling Technologies on Blue Iris Motion Detection.

Motion Sensor: You can set the minimim object size (# pixels) to reflect a vehicle image in your camera.

Make sure the default option (Highlight: Do not highlight the motion) is selected. This way, Blue Iris will not include a rectangle in the image it sends to Plate Recognizer.

Minimum Duration (Make Time): This should be set to 0.1 second, which means that the car will need to be there for 0.1 second before it triggers.

Object Detection: In the Motion Sensor page (screenshot above), click on Edit in Object Detection.

Here, you can indicate that the object must travel for a specified number of pixels (e.g. 100).

You can also have Blue Iris send an image to Plate Recognizer when the object crosses zones:

  • A Object must only have entered zone A
  • AB Object must have entered both zones A and B, overlapping or not
  • A>B Object must start in zone A, traveling to zone B
  • A-B Object must travel between zones A and B in either direction
  • AB>C Object must travel from zone A and B to zone C

Zones: You can create and edit zones. Just click and drag to set areas of the image.

You can specify multiple zones. Zones may or may not overlap. In the screenshot below,

  • Zone A is the full yellow hatch marking.
  • Zone B covers the staircase
  • Zone H (Hot Zone) is shown with the red hatch marking. Zone H is for special applications and should not be generally used.

For more advanced motion sensor options that you may want to try out, refer to the Blue Iris PDF Support Doc. You can view the Support Docs by selecting Help within the Blue Iris application. From there, navigate to Cameras > The Motion Sensor section.

Stuck? Check out Contact Us for assistance.

See ALPR Results

Option 1: View ALPR results on Plate Recognizer Dashboard.

To access the Dashboard, just sign in to your Account page:

Option 2: View ALPR results in Blue Iris alerts. As an example, see the 2 LPR alerts below highlighted in the red rectangle.

Need Help with LPR?

Let us know and we’d be happy to assist.