License plate styles and aliases

License plate styles (explained)

En nummerpladetype er en række karakteristika for en nummerplade, herunder:

Pladen størrelse og form
Tekstens format og skrifttype
Farver
Type køretøj, som nummerpladen bliver brugt på

See a list of all license plate styles supported by XProtect LPR.

You can group license plate styles into aliases. See Aliases (explained).

Aliases (explained)

A license plate style alias (alias) is a group of license plate styles. You can group license plate styles into an alias by creating the alias and assigning the alias to the license plate styles of your choice.

Aliases are optional. Using them is beneficial because:

Aliases help you categorize license plate styles according to your license plate recognition needs. See Example scenario
You specify the name of an alias. License plate styles have long and complex names that might be difficult to work with. Using aliases, you can specify a more descriptive group name
You can add aliases to match lists. See Edit match lists
The XProtect Smart Client operator can add aliases to match lists

Find license plate styles used in your system

Every country module contains license plate styles. When you enable a country module, all the license plate styles that belong to that country module are also enabled.

To see a list of all license plate styles enabled in your system:

Select Site Navigation > Servers > License plate style aliases > Assign aliases.
In the License plate style column, see a list of all license plate styles enabled in your system.

Match lists support aliases but not individual license plate styles. If you want to add a license plate style to a match list, first assign an alias to the license plate style. See Group license plate styles into aliases. Next, add the alias to the match list. See Edit match lists.

Add, edit, delete aliases

Select Site Navigation > Servers > License plate style aliases > Configure aliases.
Select:
- Add to create an alias and specify an alias name
- Edit to rename an alias
- Delete to remove an alias

Group license plate styles into aliases

To group multiple license plate styles into an alias, you need to assign an alias to the license plate styles.

Select Site Navigation > Servers > License plate style aliases > Assign aliases.
For each license plate style that you want to assign an alias to:
1. Select the dropdown in the Alias column.
2. Select the alias of your choice.

Example scenario

In this example, let's create aliases and assign them to license plate styles in the Denmark country module.

To follow along, open your Management Client and have the Denmark country module enabled.

For our license plate recognition needs, we decide to categorize license plate styles in the Denmark country module into the following groups:

Commercial
Motorcycle
Private
Standard

With the Denmark country module already enabled, let's first create the aliases, and then assign them to license plate styles.

Create aliases

Select Site Navigation > Servers > License plate style aliases > Configure aliases.
Select Add to create an alias.

Let's create the four aliases:
- DK_COMMERCIAL
- DK_MOTORCYCLE
- DK_PRIVATE
- DK_STANDARD

Next, let's group license plate styles into aliases by assigning the new aliases to the license plate styles.

Assign the aliases to license plate styles

Select Site Navigation > Servers > License plate style aliases > Assign aliases.
For each license plate style that you want to assign an alias to, select the dropdown in the Alias column and select the alias of your choice.

We assign aliases to license plate styles in the Denmark country module as follows:

License plate style	Alias
DK_commercial_since_1976 DK_commercial_since_2008 DK_commercial_since_2009 DK_commercial_since_2009_twoline	DK_COMMERCIAL
DK_motorcycle_since_1976	DK_MOTORCYCLE
DK_private_transport_since_2009 DK_private_transport_since_2009_euroband DK_private_transport_since_2009_twoline DK_private_transport_since_2009_twoline_euroband	DK_PRIVATE
DK_standard_since_1976 DK_standard_since_2009 DK_standard_since_2009_euroband DK_standard_since_2009_twoline DK_standard_since_2012_holograph	DK_STANDARD

Note that we assigned the DK_MOTORCYCLE alias to only one license plate style. We did that because we want to use this specific license plate style on a match list, and match lists support aliases but not individual license plate styles.

In this example, we created aliases and assigned them to license plate styles. A possible next step is to add the aliases to match lists. That way, we can associate different groups of license plate styles with different LPR events. For example, we can open a gate to a vehicle only if the license plate style of the vehicle is part of the DK_COMMERCIAL alias. See Match lists.