---
title: "License Plate Recognition (LPR) Setup and Search Guide"
slug: "license-plate-recognition-lpr-setup-and-search-guide"
tags: ["Aibase color", "NVR", "LPR", "License Plate Detection", "AI Function"]
updated: 2024-10-29T21:26:17Z
published: 2024-10-29T21:26:17Z
canonical: "ametawiki.ametagroup.com/license-plate-recognition-lpr-setup-and-search-guide"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://ametawiki.ametagroup.com/llms.txt
> Use this file to discover all available pages before exploring further.

# License Plate Recognition (LPR) Setup and Search Guide

### Description:

License Plate Recognition (LPR) cameras are advanced surveillance tools designed specifically for automatic license plate recognition. With an integrated search feature, users can easily retrieve plate information by entering a license plate number or browsing by time and date.

### Compatible List:

| **Type** | **Model** | **Version** |
| --- | --- | --- |
| NVR | NVR3216-16P-AI | V8.2.4.1-20240914 |
| NVR3432-16P-AI |
| NVR3432(No POE) |
| IP Cameras | CAM-IP3765W-0550-LPR | V21.45.8.2.4.1_240819 |

### Related question:

- How to create allow list and block list for my parking spot?
- Why does my LPR view appear very dark at night?
- How do I back up and import the database for license plate recognition?
- How to active deterrence and siren?
- How do I search for AI events and watch their playback?

### Physical Setup

The camera can be installed in the center or side of lane, with different recommended distances for mounting.

|  |  |  |  |
| --- | --- | --- | --- |

![A graph of a person with a pencil Description automatically generated with medium confidence](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-t48moslq.png)

![A car with a blue line Description automatically generated with medium confidence](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-1cm7471p.png)

The relationship between the installation height(H) and the capture distance(X) is X≥1.7*H. If possible, place a license plate on the road to help adjust the installation angle and height.

**Caution:**

- Avoid installing the camera in an east-west direction.
- Do not install the camera facing direct sunlight or reflective surfaces.

### On the Local Monitor

1. Click on **Main Menu** icon in the bottom left corner and click on **Setup** button.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-c8w8i28g.png)

1. Select **Detection Setup** from the **AI** Section.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-4oa1r3s2.png)

1. Click on **License Plate**, select the channel you want to configure, **check the box** under the **'Switch'** column, and then click the 'Apply' button to Enable the feature.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-xdhs2dwe.png)

1. Click the **gear icon** to access the setup page.

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-xw8v1rkf.png)

1. Use the drop-down box to select the **Channel**. Select the **Detection Target** based on your local license plate type. Left click anywhere within the video frame and drag to draw the **detection line**. When a vehicle crosses this line, its license plate will be captured and recognized. Enable the **License Plate Enhance** option to improve performance in low-light conditions (note that this may cause the view to appear very dark in such environments). You can adjust the other parameters or leave them at their default settings.

![A red line on the road Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-5910y8r3.png)

1. Click **Recognition**, then select **License Plate Management**. There are three default groups: Allow List, Block List, and Unknown. Check the box to enable a list or click the pencil icon to edit it. You can back up the database to a USB flash drive or import one from it by clicking the ' Backup Database' or ' Import Database' buttons. Click **Apply** to save your settings.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-0bhq0i3m.png)

1. On the Edit page of the list:

- **Import**: Manually create a new plate entry.
- **Import from CSV**: Upload a list from an existing CSV file.
- **Import from Local**: Import a plate from a previously captured snapshot.
- **Delete**: Remove the plate entry.
- **Move to**: Transfer the entry to another list.
- **Export**: Export the selected entry to a CSV file.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-qu08mgcu.png)

1. Click the pencil icon to modify an existing entry.

![A screen shot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-2queeutl.png)

1. Click **Alarm**, then click **License Plate Recognition**. On this page, you can configure actions to be taken when a plate in any list is detected. Click the **Apply** button after making any modifications.

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-jd9gozus.png)

1. **Search License Plate**: Click the **Playback** icon in the menu bar at the bottom of the screen, Click AI, Click **License Plate**, set the time duration, and enter the license plate number you are looking for (or leave it blank). Select the channel you want to search and then click the **Search** button. The search results will be displayed on the right. Lower fault tolerance leads to more accurate search results.

![A screen shot of a video player Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-m408eki3.png)

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-95ra7e93.png)

1. The AI Color VMS software also supports license plate search functionality and offers better performance.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-9sk4i2se.png)

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-zuirxr6g.png)

### On the NVR’s Web Page

1. Click **Remote Setting**, then select **Setup** under the **AI** section. Choose **License Plate** and select the channel you want to configure. Enable the **License Plate Enhance** option to improve performance in low-light conditions (note that this may cause the view to appear very dark in such environments). Select the **Detection Target** based on your local license plate type. Left click anywhere within the video frame and drag to draw the detection line. When a vehicle crosses this line, its license plate will be captured and recognized. You can adjust the other parameters or leave them at their default settings.

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-aec90dq1.png)

1. Click **Recognition** under the **AI** section, then click **License Plate Management**. There are three default groups: Allow List, Block List, and Unknown.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-itfvdr04.png)

1. Click the **pencil icon** to Modify the list. Toggle the **Enable switch** to Enable the list.

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-x1t5qob0.png)

1. On the **Edit page** of the list

- **Import**: Manually create a new plate entry.
- **Import from CSV**: Upload a list from an existing CSV file.
- **Import from Capture**: Import a plate from a previously captured snapshot.
- **Delete**: Remove the plate entry.
- **Move to**: Transfer the entry to another list.
- **Export**: Export the selected entry to a CSV file.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-utflucem.png)

1. Click the pencil icon to modify an existing entry.

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-i4l47u09.png)

1. Click **Alarm** under the **AI** section, then click **License Plate Recognition**. On this page, you can configure actions to be taken when a plate in any list is detected. Click the **Save** button after making any modifications.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-iapeutrn.png)

1. **Search License Plate:** Click **Playback**, select **'AI'** -> **'License Plate'** from the dropdown menu, set the **time range**, and enter the desired license plate number (or leave it blank). Then, click the **Add** icon to add the plate to the search list. You can search for multiple license plates simultaneously. Select the **channel** you want to search and then click the **Search** button. The search results will be displayed on the right. Lower fault tolerance leads to more accurate search results.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-l0b7crsh.png)

1. The AI Color VMS software also supports license plate search functionality and offers better performance.

![A screenshot of a computer Description automatically generated](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-l6botnr9.png)

![](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/license-plate-recognition-lpr-setup-and-search-guide-image-0lm19kp9.png)

**Note: You can also configure License Plate Detection on the camera’s web page, and all saved settings will be synchronized with the NVR. However, the Recognition settings must still be configured on the NVR’s web page or local device**.