SharpOS 13.7 Sharp Portal - ALPR settings page - SharpZ3 | SharpOS 13.7

To navigate to the ALPR settings page, click Configuration > Analytics > ALPR settings.

The following information is displayed:

Location

Context

Select which plate origin the SharpZ3 is reading.

Analytics:

State

Select this option if you want the SharpZ3 unit to attempt read the license plate origin. Depending on the region, this can refer to the issuing state, province, or country.

Vehicle make and model

Select this option if you want the SharpZ3 unit to attempt to read the vehicle’s make and model, for example, Honda Civic.

NOTE: This setting is not recommended for MLPI installations.

Confidence score

The SharpZ3 assigns a confidence score percentage to each license plate read. This value indicates how confident the SharpZ3 is in the accuracy of the read.

NOTE: License plates that contain similar characters such as 8 and B are more difficult to read and generally produce reads with a lower confidence score.

Vehicle type, color, and orientation

Select this option if you want to include the vehicle type, color, and orientation with plate reads. Based on the context image, Sharp analytics can detect if the vehicle is, for example, a light yellow bus, or a dark green passenger vehicle. In addition, Sharp analytics can detect the vehicle orientation, for example, back, or front side.

Vehicle accessories

Select this option if you want license plate reads to indicate the presence of items such as hitches, spare tires, and other vehicle accessories.

NOTE:

• To enable this feature, contact your AutoVu representative.
• Hitches must be at least 20 px high in the image for detection. Note that hitch detection can be affected by environmental factors such as snow and ambient lighting.
• Using the vehicle accessories feature increases CPU usage and can affect the frame rate.

Reads

Reading mode

Select one of the following reading modes:

Continuous

Select this for plates to be captured continuously. This is the default setting.

Conditional

When this option is selected, the SharpZ3 captures plate reads continuously as long as the selected input signal meets the condition defined (high/low). Select an input and specify whether the state is high or low.

Multiconditional

Generates reads from a specific camera only while an input's status meets the defined high or low condition. This option is required if using the AutoVu car camera switch.

Read strategy

Slow-moving vehicle

Select this strategy for fixed Sharp cameras monitoring parking lots and for mobile Sharp cameras used for parking enforcement. Generally results in better ALPR accuracy, but occasionally misses or duplicates plate reads.

Fast-moving vehicle

Select this strategy for fixed Sharp cameras monitoring highways and for mobile Sharp cameras used for law enforcement. This strategy obtains ALPR reads quickly, but often duplicates reads if the plate is in the field of view for a long time.