Automatic License Plate Recognition

AI-based automatic capturing and reading of the text of the license plates.

Vue d'ensemble

What is ALPR?
The automatic license plate recognition (ALPR) is a technology based on artificial intelligence that reads the license plate numbers of the vehicles appearing in the captured images.

The deep learning AI based ALPR is capable of reading license plates from various angles and even when the vehicles are moving fast. For example, the camera may be installed above the traffic tilting downwards, or on the roadside looking sideways.

Camera Requirements
The cameras that are used for capturing clear ALPR-readable images have very good low light sensitivity so that they can maintain very high shutter speed to reduce motion blur while still capturing enough light to make the image clearly visible.

Those cameras also need to have a very good WDR, because they have to be able to read the front side license plates regardless of the interference from the headlights of the vehicle.

It is also important to have a high frame rate capability so that multiple images could be captures within that short moment while the vehicle is in the view of the camera. This way, there are more choices for the most ideal snapshot for the analysis.

Furthermore, it is important to decide how many concurrent lanes of traffic would one camera have to manage. Some cameras can manage 2 or even 3 lanes at the same time.

Camera or Server ALPR?
Once the clear image is captured, it will be forwarded to the ALPR analysis. It can be done either inside the camera directly, or by the remote AI server.

There are many benefits of having ALPR analysis done inside the camera directly - the faster response time, distributed computing power, and no AI license required. ACTi's solution is to use camera-based ALPR as the better choice.

Metadata Collection or Alert?
There are two main ways to handle the captured license plate information. One is to simply collect and pass forward to the management server, such as VMS. This way the camera does not need to make a decision about which license plates require special attention. The server collects metadata and stores it for the later search purposes.

Another way is to maintain a specific database inside the camera directly - as a whitelist or blacklist. The whitelist is used to manage the permitted visitors whereas the blacklist is mostly used for wanted vehicles by the law enforcement.

When the license plate is captured and the camera compares the result immediately with its database of license plates of interest. When the match is found, the camera alerts the VMS immediately. The VMS can be configured to take various actions automatically when such event comes in, such as producing audio alarm, popping up instant video from that specific video channel and more. The alert-based solution means that normally the VMS does not collect the metadata about the unrelated license plates and only receives license plate data from the camera upon the events.

Applications

ACTi ALPR cameras are designed for various applications, such as highways monitoring, city surveillance, and parking management.

Caractéristiques

  • Various ALPR camera types - zoom bullet and PTZ
  • Resolution up to 9MP
  • Optical Zoom up to 60x
  • Frame rate up to 120fps under 2MP mode
  • Capturing vehicles moving up to 320 km/h Front and side installations
  • ALPR recognition distance ranging from 4.5 to 900 meters
  • Monitor up to 3 lanes simultaneously

Solutions

ACTi's ALPR solution consists of ALPR cameras and NVR. There is a wide range of camera options to choose from.
Read More

We recommend using ACTi's NVR 3 Corporate as the main management server of receiving either ALPR metadata or events from the camera. There is no AI license required. The regular video channel license is applied.
Read More

Boîte

Vue en matrice

Taper
Type de pistolet zoom
Environnement d'application
Intérieur/Extérieur
Lentilles
Zoom
Rapport d'échelle
40x
5MP
A214

Comparison

Modèle
A214
Image du produit
Taper
Type de pistolet zoom
Résolution Maximum
5MP
Rapport d'échelle
40x
Sensor Size
1/2.7"
Gamme Dynamique Étendue
Extreme (150 dB)
Maximum Frame Rate
60fps
l'audio
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
Fréquence d'images maximale par rapport à la résolution
60@5MP, 60@4MP, 60@3MP, 60@2MP
Multi-Diffusion
Flux quadruples
Built-in Analytics
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
Operating Temperature
-30°C ~ 60°C (-22°F ~ 140°F)
Conforme à la NDAA
Oui
Entrées/Sorties Numériques
2/2
Environnement d'application
Intérieur/Extérieur

Tube

Vue en matrice

Taper
Vari-focal Bullet
Environnement d'application
Extérieur
Lentilles
Vari-focal
9MP
A432-P1
Taper
Zoom Bullet
Environnement d'application
Outdoor
Lentilles
Zoom
Rapport d'échelle
3.6x 4x 4.3x 4.4x 4.5x
4MP
A429-P1
A431
A429
A431-P1
A431-P2
5MP
A412
A426
9MP
A432

Comparison

Modèle
A429
A431-P1
A431-P2
A429-P1
A431
Image du produit
Taper
Zoom Tube
Zoom Tube
Zoom Tube
Zoom Tube
Zoom Tube
Résolution Maximum
4MP
4MP
4MP
4MP
4MP
Rapport d'échelle
4.3x
4.3x
4.5x
4x
4x
Sensor Size
1/1.8"
1/1.8"
1/1.8"
1/1.8"
1/1.8"
Light Type
IR LED Adaptatif: 85m
IR LED Adaptatif: 85m
IR LED Adaptatif: 85m
IR LED Adaptatif: 100m
IR LED Adaptatif: 85m
Gamme Dynamique Étendue
Extreme (150 dB)
Extreme (150 dB)
Extreme (150 dB)
Extreme (150 dB)
Extreme (150 dB)
LightGuard
Oui
-
-
-
-
Maximum Frame Rate
120fps
30fps
30fps
120fps
30fps
l'audio
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
-
-
bidirectionnel
-
Fréquence d'images maximale par rapport à la résolution
60@4MP, 120@2MP, 30@2MP
30@4MP, 30@2MP
30@4MP, 30@2MP
60@4MP, 120@2MP, 30@2MP
30@4MP, 30@2MP
Multi-Diffusion
-
-
-
-
Trois flux
Built-in Analytics
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, ALPR, Counting
ALPR
ALPR
ALPR, Counting
ALPR
Operating Temperature
-40°C ~ 65°C (-40°F ~ 149°F)
-
-
-40°C ~ 65°C (-40°F ~ 149°F)
-30°C ~ 70°C (-22°F ~ 158°F)
Environmental Casing
Étanche (IP68), Boîtier antivandale (IK10)
Étanche (IP68), Boîtier antivandale (IK10)
Étanche (IP68), Boîtier antivandale (IK10)
Étanche (IP68), Boîtier antivandale (IK10)
Étanche (IP68), Boîtier antivandale (IK10)
Anti-Corrosion
-
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Entrées/Sorties Numériques
2/2
1/1
1/1
2/2
1/1
Environnement d'application
Extérieur
Extérieur
Extérieur
Extérieur
Extérieur
Modèle
A412
A426
A432
A432-P1
Image du produit
Taper
Zoom Tube
Zoom Tube
Zoom Tube
Vari-focal Bullet
Résolution Maximum
5MP
5MP
9MP
9MP
Rapport d'échelle
4.4x
4.4x
3.6x
-
Sensor Size
1/2.7"
1/2.7"
1"
1"
Light Type
IR LED Adaptatif: 85m
IR LED Adaptatif: 85m
IR LED Adaptatif: 30m
IR LED Adaptatif: 30m
Gamme Dynamique Étendue
Extreme (135 dB)
Extreme (135 dB)
-
-
Maximum Frame Rate
30fps
30fps
30fps
30fps
l'audio
bidirectionnel, Stereo Line-in, Sortie de source audio externe
bidirectionnel, Stereo Line-in, Sortie de source audio externe
-
-
Fréquence d'images maximale par rapport à la résolution
30@5MP, 30@2MP
30@5MP, 30@2MP
30@9MP, 30@8MP, 30@5MP, 30@4MP, 30@2MP
30@9MP, 30@8MP, 30@5MP, 30@4MP, 30@2MP
Multi-Diffusion
Flux quadruples
Flux quadruples
Trois flux
-
Built-in Analytics
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
ALPR
ALPR
Operating Temperature
-40°C ~ 60°C (-40°F ~ 140°F)
-40°C ~ 60°C (-40°F ~ 140°F)
-30°C ~ 70°C (-22°F ~ 158°F)
-
Environmental Casing
Étanche (IP66)
Étanche (IP66), Boîtier antivandale (IK10)
Étanche (IP68), Boîtier antivandale (IK10)
Étanche (IP68), Boîtier antivandale (IK10)
Anti-Corrosion
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Conforme à la NDAA
Oui
Oui
-
-
Entrées/Sorties Numériques
1/2
1/2
7/2
7/2
Environnement d'application
Extérieur
Extérieur
Extérieur
Extérieur

Dôme

Vue en matrice

Taper
Zoom Dôme
Environnement d'application
Extérieur
Lentilles
Zoom
Rapport d'échelle
4.4x
5MP
A826
A828

Comparison

Modèle
A826
A828
Image du produit
Taper
Zoom Dôme Extérieur
Zoom Dôme Extérieur
Résolution Maximum
5MP
5MP
Rapport d'échelle
4.4x
4.4x
Sensor Size
1/2.7"
1/2.7"
Light Type
IR LED Adaptatif: 85m
IR LED Adaptatif: 85m
Gamme Dynamique Étendue
Extreme (135 dB)
Extreme (135 dB)
Maximum Frame Rate
30fps
30fps
l'audio
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
Fréquence d'images maximale par rapport à la résolution
30@5MP, 30@2MP
30@5MP, 30@2MP
Multi-Diffusion
Flux quadruples
Flux quadruples
Built-in Analytics
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
Operating Temperature
-55°C ~55°C (-67°F ~ 131°F) heater on (Limited zoom functionality at -55°C and may require manual focus)
-55°C ~55°C (-67°F ~ 131°F) heater on (Limited zoom functionality at -55°C and may require manual focus)
Environmental Casing
Étanche (IP66), Anti-vandale (IK10)
Étanche (IP66), Anti-vandale (IK10)
Anti-Corrosion
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Conforme à la NDAA
Oui
Oui
Entrées/Sorties Numériques
1/1
1/1
Environnement d'application
Extérieur
Extérieur

PTZ

Vue en matrice

Taper
PTZ
Environnement d'application
Extérieur
Lentilles
Zoom
Rapport d'échelle
22x 30x 36x 40x
2MP
A956
5MP
A957
8MP
A952
A981
A962

Comparison

Modèle
A956
A957
A952
A981
A962
Image du produit
Taper
PTZ Extérieur
PTZ Extérieur
PTZ Extérieur
PTZ Extérieur
PTZ Extérieur
Résolution Maximum
2MP
5MP
8MP
8MP
8MP
Rapport d'échelle
40x
40x
22x
30x
36x
Sensor Size
1/2.7"
1/2.7"
1/1.8"
1/2.7"
1/1.8"
Light Type
IR LED Adaptatif: 250m
IR LED Adaptatif: 250m
IR LED Adaptatif: 250m
IR LED Adaptatif: 250m
IR LED Adaptatif: 300m
Gamme Dynamique Étendue
Extreme (150 dB)
Extreme (150 dB)
Extreme (150 dB)
Extreme (150 dB)
Extreme (140 dB)
LightGuard
-
-
-
-
Oui
Maximum Frame Rate
60fps
60fps
30fps
30fps
120fps
l'audio
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
bidirectionnel, Entrée de source audio externe, Sortie de source audio externe
Fréquence d'images maximale par rapport à la résolution
60@2MP
30@5MP, 60@2MP
30@8MP, 30@6MP, 30@2MP
30@8MP, 30@6MP, 30@2MP
60@8MP, 60@5MP, 60@4MP, 60@3MP, 120@2MP, 30@2MP
Multi-Diffusion
Flux quadruples
Flux quadruples
Flux quadruples
Flux quadruples
Trois flux
Built-in Analytics
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
Smart Motion Detection, Smart Intrusion Protection, Object Metadata, Détection Faciale, Face Recognition, ALPR, Counting, Auto Tracking
ALPR, Auto Tracking
Operating Temperature
-40°C ~55°C (-40°F ~ 131°F) heater on
-40°C ~50°C (-40°F ~ 122°F) heater on
-40°C ~50°C (-40°F ~ 122°F) heater on
-40°C ~50°C (-40°F ~ 122°F) heater on
-40°C ~ 70°C (-40°F ~ 158°F)
Environmental Casing
Étanche (IP66), Boîtier antivandale (IK10)
Étanche (IP66), Boîtier antivandale (IK10)
Étanche (IP66), Boîtier antivandale (IK10)
Étanche (IP66), Boîtier antivandale (IK10)
Anti-vandale (IK10), Étanche (IP68), NEMA 4X
Anti-Corrosion
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Optional (approximately 2-3 years)
Oui (approximately 10 years), Optional (approximately 2-3 years)
Conforme à la NDAA
Oui
Oui
Oui
Oui
-
Entrées/Sorties Numériques
2/4
2/4
2/4
2/4
2/7
Environnement d'application
Extérieur
Extérieur
Extérieur
Extérieur
Extérieur

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