About license plate filters - Security Center 5.9

Security Center User Guide 5.9

series
Security Center 5.9
revised_modified
2020-08-19

When you generate a report that includes license plates captured by an ALPR camera, if you do not know the full license plate number, you can use asterisks (*) and question marks (?) to replace unknown characters.

The following Security Desk reports include the License plate filter which lets you include full or partial license plates:
  • Hits report
  • Hits (Multi-region) report
  • Reads report
  • Reads (Multi-region) report
  • Inventory report
  • Parking sessions report
  • Parking zones report

Full

When you select Full, you can enter the full license plate. You can also enter the wildcard characters * and ? to represent unknown characters.
  • Asterisks (*): You can enter one or more asterisks to represent one character, multiple characters, or no characters. For example, You know the plate starts with "A" and ends with "123", but you are not sure what is in the middle. Filtering for A*123 would include the following plates in the report:
    Plate number Report results Reason
    AB 123 Included One character appears between "A" and "123".
    ABC 123 Included Multiple characters appear between "A" and "123".
    A 123 Included No characters appear between "A" and "123".
    ABC 1234 Excluded The plate does not end with "123".
  • Question mark (?): You can enter one or more question marks to represent any single character. For example, if you can't remember the first or last character in the license plate, filtering for ?BC 12? would include the following plates in the report:
    Plate number Report results Reason
    ABC 123 Included There is one character before and after "BC 12".
    5BC 12L Included There is one character before and after "BC 12".
    AABC 123 Excluded Each "?" can only represent one character.
  • Combination: You can enter a combination of asterisks and question marks. For example, filtering for A?C 1* would include the following plates in the report:
    Plate number Report results Reason
    ABC 123 Included The "?" is replaced by "B" and there are characters after the "1".
    A2C 1 Included The "?" is replaced by "2" and there are no characters after the "1".
    ABBC 123 Excluded Each "?" can only represent one character.

Partial

Select Partial if you do not know the beginning or end of the plate number. For example, the plate read ABC 123 would only be returned with the first two plate number examples below.
NOTE: You cannot use asterisks and question marks for partial license plates.
Partial plate search Report results Reason
123 ABC 123 is included The missing characters come before "123".
C12 ABC 123 is included The missing characters come before and after "C12".
ABC 23 ABC 123 is NOT included The missing character is in the middle of "ABC23".

Multiple license plates

If you want to investigate multiple license plates simultaneously, you can enter the desired license plate numbers using a delimiter. This feature is applicable for both full and partial license plate filter. For more information on how to enter multiple license plate numbers, see Filtering a report with multiple license plates