BACK TO THE SCORPION SPY SHOP!
BACK TO THE TROUBLESHOOTING HOME PAGE!
LICENSE PLATE RECOGNITION CAMERAS!
SCROLL DOWN FOR MORE INFO!
For those of you who are having problems with license plate video then lets go through the many factors, and failures that can effect getting the right video of a license plate.
The most common is where cameras are not dead straight on to a plate.
There are problems with cameras located to high to the road creating bad camera angles.
There are situations where cars drive from left to right of a LPR camera that is pointed at a 45 degree angle to the road. It is just like a person walking past a window. Now you see them, and now you do not! You have a short time to grab the plate.
Then on top of that you have fields per second that create lines in the video, and it is next to impossible to see the plate info clearly. You need to put the camera in a place where the cars slow down, or better yet come to a complete stop.
Do not put your cameras on the "outside" of the gate. Cars will accelerate away from the gate making the LPR impossible.
Put your LPR cameras where the vehicle is trapped by the gate.
Do not forget to use a second wide angle camera to catch the whole gate view.
There are DVRs that are not fast enough to catch an image.
There are lenses that do not let enough light through, and then the camera has to hold the shutter open longer creating a blurry video shot.
You have to use the best lens that you can afford. There are lenses that do not pass IR. Make sure your lens will pass IR!
There are issues with cameras that do not have WDR, (Wide Dynamic Range). During the dusk time frame a dark car can drive through the shade of trees, and you cannot see the details of the car.
Do not use a cheap box camera, and call it a License Plate Camera!! It will not work!
Illumination is the next failure of LPR. Will you use electrical lighting, or will you use IR illuminators?
How will you run your wires? For new gate construction this is not a problem. For retro fits then you have a lot of preplanning to do before you do the install. Are you going to trench through sod, and roads, or parking lots to run your wires? Are you willing to spend money replaceing sod, laying concrete, or ashphalt? What happens if you damage the curbs of a road?
Would you be better off using wireless transmitters to send the video? You will need a transmitter for each camera used.
It may be easier to get the phone company, or the cable company to come out and run a line to your gate to give you internet.
Do you use IP cameras, and attach them to the ISP's modem? Do you use a DVR, and attach it to the modem?
You now have several options to view your cameras remotely.
Scroll down for more infor on the Speed Bump Camera for License Plate Capture!
ECL-553HQD COLOR C/CS MOUNT SUPER HIGH RESOLUTION CAMERA
License Plate Camera PDF
ENGLISH
ECL-582AIV VARI-FOCAL LENS AUTO IRIS W/IR FILTER
License Plate Lens PDF
ENGLISH
ECL-605HB CLAMSHELL OUTDOOR HOUSING WITH HEATER
ECL-205 OUTDOOR CAMERA HOUSING BRACKET
SPEED BUMP CAMERA!
CLICK HERE FOR INFORMATION!
Geo Vision Company
http://www.geovision.com.tw/english/index.asp
GeoVision License Plate Recognition Software!
http://www.geovision.com.tw/english/solution/GV-LPR_Intro.htm
GeoVision LPR solutions.
http://www.geovision.com.tw/english/3_1.asp?stable1=Pro&sfiled=pgid&pno=28
Access Control
http://www.geovision.com.tw/english/3_1.asp?stable1=Pro&sfiled=pgid&pno=32
Geo Vision has an all in one solution for your security needs. You can insert Geo Vision cards in to computers for your video surveillance needs, and integrate with electronic access, and you can use LPR software to track vehicles such as allowing authorized vehicles in to parking garage, or looking for black listed plates such as pollution control compliance.
For those of you who are having problems with license plate video then lets go through the many factors, and failures that can effect getting the right video of a license plate.
The most common is where cameras are not dead straight on to a plate.
There are problems with cameras located to high to the road creating bad camera angles.
There are situations where cars drive from left to right of a LPR camera that is pointed at a 45 degree angle to the road. It is just like a person walking past a window. Now you see them, and now you do not! You have a short time to grab the plate.
Then on top of that you have fields per second that create lines in the video, and it is next to impossible to see the plate info clearly. You need to put the camera in a place where the cars slow down, or better yet come to a complete stop.
Do not put your cameras on the "outside" of the gate. Cars will accelerate away from the gate making the LPR impossible.
Put your LPR cameras where the vehicle is trapped by the gate.
Do not forget to use a second wide angle camera to catch the whole gate view.
There are DVRs that are not fast enough to catch an image.
There are lenses that do not let enough light through, and then the camera has to hold the shutter open longer creating a blurry video shot.
You have to use the best lens that you can afford. There are lenses that do not pass IR. Make sure your lens will pass IR!
There are issues with cameras that do not have WDR, (Wide Dynamic Range). During the dusk time frame a dark car can drive through the shade of trees, and you cannot see the details of the car.
Do not use a cheap box camera, and call it a License Plate Camera!! It will not work!
Illumination is the next failure of LPR. Will you use electrical lighting, or will you use IR illuminators?
How will you run your wires? For new gate construction this is not a problem. For retro fits then you have a lot of preplanning to do before you do the install. Are you going to trench through sod, and roads, or parking lots to run your wires? Are you willing to spend money replaceing sod, laying concrete, or ashphalt? What happens if you damage the curbs of a road?
Would you be better off using wireless transmitters to send the video? You will need a transmitter for each camera used.
It may be easier to get the phone company, or the cable company to come out and run a line to your gate to give you internet.
Do you use IP cameras, and attach them to the ISP's modem? Do you use a DVR, and attach it to the modem?
You now have several options to view your cameras remotely.
Perhaps you might need a SPEEDBUMP camera!
Here is a view of a license plate.
Here is the same photo in the negative.
There are cameras that have a negative setting. This can help over come some lighting, or contrast issues.
Milestone Systems Camera Tricks, and Tips PDF
ENGLISH
Call us for your gate video surveillance needs! 321 505 3734!
Down load this video to your desktop, and then down load the Viewer Software. These video shots will give you an example of what we are trying to describe to you.
Click on the viewer application, and click on RUN, when the Viewer screen comes up click on LOAD FILES, and select a video you wish to watch.
Viewer Software
Video This is the wrong angle for an LPR Camera!!
(more videos will be coming) I am still in the testing, and editing stage! I want to make sure the viewer, and the video work before I post them.
thanks for your patience.