Vivotek IB9387-LPR Manuale utente

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1

Quick Configuration Guide

Stop-and-go LPR Camera

2

Table of Contents

Revision History ..................................................................................................3

Overview............................................................................................................3

Hardware Configuration .................................................................................4

Software Configuration ...................................................................................6

3

Revision History

•Rev. 1.0: Initial release

•Rev. 1.1: Revise content on Software configuration Step 3 to 5

•Rev. 1.2: Revise content on Software configuration Step 4

•Rev. 1.3: Revise content on Software configuration Step 3, 4, 10 Add Step 8

and 12

•Rev. 1.4: Revise content on Software configuration Step 3, 10 and 11

•Rev. 1.5: Revise content on Software configuration Step 3

•Rev. 1.6: Revise installation height and Add hardware related information

Overview

VIVOTEK’s LPR camera is a standalone LPR camera system, featuring a

built-in license plate recognition system as well as white-list and

black-list for license plate verification. It can read the markings of

multiple countries or states simultaneously (e.g., Singapore and

Malaysia; Texas, Oklahoma and neighboring states). It also offers

various APIs for integration with 3rd party systems such as parking

management, toll collection, and weighbridge systems. The camera is

ideal for use in parking access control and stop-and-go toll systems.

In this document, we will show you how to configurate LPR camera from

hardware and software different point of views. And please refer to the

full user guide for details after having read this configuration guide.

4

Hardware Configuration

•For IB9387-LPR

•For IB9365-LPR

Left one is set on 1-meter height and right one is set on 0.8-meter height

(The experiment result for installation Height shows left one is better)

•Horizontal angle

5

•License plate rotation angle

•To avoid rain or water sticking on front glass, we can use rearview

mirror water repellent product.

left one is used water repellent product, but right is not

(The experiment result shows left one is better)

6

Software Configuration

1. Click “ANPR” link on application on camera to launch ANPR

software management web console.

Check if ANPR version is updated. (you can download the latest

version from https://www.vivotek.com/downloads/anpr-package)

2. Configurate the region and country of used license plate.

7

3. Configurate the height of license plate character and the accepted

confidence level.

Through setting maximum and minimum character height that can

help LPR engine to limit on reading the height of license plate

character that you set, and ignore unwanted information. Usually

the character height of license plate around 25 to 80 pixels can be

recognized.

Minimum confidence (tpc) is minimum reliability in the reading of a

license plate to consider it valid. Reliability is a parameter returned

by the engine for recognizing license plates (value of 1-100, where

100 is the most reliable).

We recommend to keep using default character height settings (25

and 80 pixels) and if needed you can try to adjust confidence level

first.

8

4. Go to Live page and click Calibration pattern, to check the height

of license plate character.

Our recommended character height is 25~50 pixels. The numbers

should cover 1 to 2 segments, which each segment is indicated by

the guiding gridlines. (The best coverage is around 1.5 segments; It is

the best recognition height for engine)

(You can go to image focus page in camera configuration to zoom in/out the

camera to adjust the height of license plate character, please refer Step 5)

9

5. Go to camera configuration, and check if camera is focused, and

the height of license plate character cover 1 to 2 segments.

(Regarding our recommended character height, please refer Step 4)

•Zoom in/out the camera to adjust the height of license plate

character.

•Select “Custom”mode in Focus window section to draw the area

you would like to focus, for example the license plate display

area. And click “Perform auto focus” to trigger auto focus.

10

6. Switch to 100% view, to make sure the license plate is clear.