timbo
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Everything posted by timbo
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720p 1280 x 720 = 0.921600 Megapixels (1MP) 1080p 1920 x 1080 = 2.073600 Megapixels (2.1MP)
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I've used them in installations already. It's the same sensor as in the 800 series HD PTZ's. They work very well under low light and recently out performed 5 competitors in a Rotokin shootout. Some other competitors were, Pelco, Axis, Vivotek etc Some key features are the quad streaming, remote auto focus from the network and Micro SD card slot that supports up to 2TB of onboard storage. It has WDR and a slightly larger CMOS sensor than some competition. None of the Bosch products are OEM of Sanyo. You could expect the price to probably be a bit cheaper than the current NB498's
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You'll have to be more specific ... First off, you should probably be using an ANPR camera like a REG-X-16 There are many settings to configure ... increase the shutter speed, WDR, BLC (not to be used together) etc ... Use the '24 hour' profile, which should be profile 1, 'Traffic' profile (2) is good for compensation bright lights with WDR, but slows the shutter speed down. I suggest too much without know the current settings/problems.
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Not at all ... I stock these cameras. They're specifically low light cameras with WDR and an IR cut filter. The shutter speed is nowhere quick enough (despite claims of ANPR at 90mph+ on other websites). Any awards were for Low light. No one in their right mind would use 15fps at high speeds either ... as your object could pass through your Field of View before you even get a frame. Please find the search results from their website below, for LPR & ANPR http://www.lumenera.com/cgi-bin/htsearch?config=%2Fwww.lumenera.com%2Fdefault%2Fconf%2Fdefault&restrict=&exclude=&words=lpr http://www.lumenera.com/cgi-bin/htsearch?config=%2Fwww.lumenera.com%2Fdefault%2Fconf%2Fdefault&restrict=&exclude=&words=anpr Perhaps you were thinking of the Le256, which is still not for ANPR.
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Hi Tom, I agree that MP could be used in some applications ... for all we know, that first image I posted could be of a stationary car ... I only grabbed it off Google to illustrate my point. The Le165 could do whatever distance you wanted according to the Lens you'd use, but a 2/3" Lens would be very expensive ... most MP also use CMOS sensors and not CCD. However, this camera would still suffer under speed. I would use a MP to compliment a LPR camera, for the overview of a scene.
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http://resource.boschsecurity.com/documents/REGL1LicensePla_SolutionBrief_enUS_T6224639499.pdf
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Hi Rory, I distribute quite a few of the Brands in EMEA, Bosch being one of them ... The price I supply dealers/integrators would be $550. Prices you might see on the internet would be retail ... Attached you will find a datasheet for the applications of the different models. The main differences being the speed a vehicle can pass through and the distance of the object from the camera.
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Furthermore, the LE165 uses a 2/3"CCD ...a 2/3" sensor is huge for the industry, also a CCD under low light far out performs a CMOS sensor as it can use light from pixels around it. Lastly, it uses WDR to filter the glare ... MP is a resolution, not a solution for every application in CCTV ... Your Axis camera, recording at 1.3MP, 15fps using H.264 over 30 days should use approximatly 520GB of storage, conversely, an LPR cam at 4CIF and the same frame rate and perion would use 9.8GB ... Multiply that over several cameras and you will see how your storage would nullify the initial cost of the correct camera.
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I'm well aware of the Lumenera LE165 product but wanted to simply state a point on how LPR should look. Please post a picture of your night time footage to disprove my point, furthermore, please could you you post a picture of a vehicle at 50mph with your Axis camera. My emphasis was not on a brand (that was a suggestion). The dealer price on a REG-X camera should be approx $550. You're welcome to argue the point but the amount of money you spend on storage recording at MP resolution, far outweighs the price of the correct camera and recording at 4 CIF. Perhaps manufacturers should stop making these cameras, as it is apparent 1/4" CMOS sensors can capture pictures at night without frame loss. Remember, I suggested using the camera, not the REG Sentry hardware or software. Please accept constructive criticism where necessary, the camera you suggested is not the right one for the application, which you'll notice at speed or at night.
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Typically, you should be using a specific camera for a specific purpose ... Using an LPR camera for the job would be first prize. You could pick the camera's up for less than $800. This will have a much higher shutter speed than a conventional camera, therefore no blurry pictures - thats why LPR cameras are rated for certain speeds. The second reason you'd use an LPR camera would be that the exposure wouldn't be relevant as your picture would be similar day or night (see below). The picture is incredibly dark and eliminates car headlights and glare flaring up and distorting the picture. The camera uses the integrated IR Illumination to reflect off the plate to allow the numbers to be a much higher contrast. The reason why these Axis camera doesn't have WDR, is that it uses a CMOS sensor and not a CCD. This allows each pixel to be powered individually and not have to use power from other pixels around it, therefore it already does a similar job to WDR by cutting out glare. CMOS sensors however, struggle under low light conditions compared to CCD's. Have a look at the Bosch Reg-X cameras, they're relatively cheap and are purpose driven. Replacing LPR cameras with Megapixel, do not serve the same purpose and is not the way forward. Manufacturers provide us these products for their intended purpose, if you use the correct technology from the start, you shouldn't have any issues. Like I mentioned before, if you want a better picture ... increase your shutter speed to get rid of the blurring and use a camera that eliminates glare. Also make sure the number plate makes up a larger portion of your captured image. If you want an overview camera, then use one to compliment the LPR camera. Don't take shortcuts, you will eventually spend more time (time=money) on this project than you should have. You could allow yourself to spend more time on other projects rather than trying accommodate the wrong camera for the purpose. Megapixels might work in some conditions, but have a look at your night footage and you'll see why it would be short sighted. No offence to anyone involved, just trying to help
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Increase your shutter speed and get a camera the has WDR (Wide Dynamic Range)
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Get a Bosch 600 Series DVR, a 16 Channel unit will cost about $1000. Record at 2CIF resolution on 12.5 fps ... You don't need such a high frame rate. Spend the other $1500 on decent cameras, TVL's mean nothing if you're using a cheap brand who have second grade CCD chips (even if it says "Sony' on it - there are different grades) Look at getting Samsung or Bosch, if you want IR Illumination you can try Bosch's WZ18's. Ask a dealer to set them up and demo them for you, you can probably also get them online. Pay the money for proper equipment with 3 year swap out warranties, if it breaks after 2 years and 10 months, they should give you a new one.