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megapixel man

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Posts posted by megapixel man

  1. Posted

    Lightning strike? Maybe they'd better be filtered through one of these: http://www.amazon.com/Belkin-BE108200-06-Protector-Telephone-Protection/dp/B000HPV3RW

     

    It's a $200,000 insurance policy for connected equipment for only $14.99!!!

     

    Keep in mind that a surge protector protects equipment from strikes coming over the grid. If lightning directly strikes the camera ... poof!!!!

     

    Best,

    Christopher

     

    that was tongue in cheek. I'm not too worried about lightning strikes. I was a satellite installer (among other things) for >12 years. I saw maybe one get hit. Out of thousands. I don't think it's a threat.

     

    If I owned a stadium and I lost a $10K camera: BFD - I'd just replace it. JMHO, of course

     

    Maybe I'll start advertising "free lightning strike replacements on all our outdoor cameras" just to differentiate my co from everyone else.

     

    Insurance, as the pros here should know, is not to be taken lightly; it should be handled by a pro, just like your taxes should be handled (or combed over) by a CPA.

     

    I'm much more interested in the megapixel camera / DVR aspect of this thread. I'd love to sit in the "eagles nest" control room at one of my local stadiums & see some of these amazing cameras.

     

    I wonder, do they allow for digital PTZ at any time - that'd be cool.[/quote]

     

    Yes they do, you can have multiple viewing windows and tabs open from the same camera at different zoom levels showing various regions of interest at the same time on both live and recorded footage. "situational awareness and detail", you can also set these as saved views for instant retrevial, multiple system operators can do this at the same time. For applications like stadiums and large area surveillance you can use the Avigilon mapping interface to set up different regions of interest and zoom levels from the one camera as a map overlay, this allows for easy navigation of large systems and sites.

  2. Posted

    Rory how many analog cameras would it take to get face face recognition on every seat in an 20,000 stadium?

     

    I know the question was directed at Rory, however I have done a few stadiums with the Avigilon System and done one for a 20,000 capacity, 12x 16MP cameras were used to achieve facial rec of everyone in the stands, and a bucket load cheaper and user friendly solution for them than the 500-600 standard res cameras it would take to acheive the same result. For these types of projects you can't think of the individual camera in terms of a comodity item $. the overall solution price and what it delivers is the key factor, including the life cycle cost (maintenance etc.....).

  7. Posted

    I found no samples of video/still images on their web site. The linked images are for their 5 MP cameras and up. Any of you have tested it in the field?

     

    I think there are going to be a ton of such cameras, using commodity 1080p encoders which are being used in everything from point and shoot cameras to phones. That should bring down the cost of this performance level.

     

    Amirm, there is a tradeshow sample video clip available for download in the partner section of the web site.

  8. Posted

    yes, had a play with one already, very nice. They come in 4 different form factors in both and 720p and 1080p, fully ONVIF compliant.
    How did the zoom work? Does it need refocusing when you zoom in or does it work like a ptz?

     

    Sony's DH140 is quite nice but the zoom function is only usable when installing.

     

    Software driven optical zoom and auto focus are for set up only.

  10. Posted

    I posted this in a different thread but i will do it again. This is not a problem with Exacq. I have tested 96 on 2 monitors with a Q6600 and a high-end gaming Nvideo video card.

     

    Here is a video with 4 monitors with Exacq it all comes down to the video card.

     

     

    Sorry Wireguys, I meant with all cameras being Megapixel and 3MP +. What exacq is doing in that video is doable on most good VMS.

     

    I have done a 16 monitor control room with only 2 workstations, 8 1920x1080 monitors on each (6x 24" and 2x 52"), workstations had 2x Quad Head nVidia Cards and Dual Quad Core Xeon 3.2Ghz. And this system has over 250+ Cameras, very large MP resolutions, but non H.264.

     

    I have been speaking to some industry friends that have done some large number 5 Megapixel H.264 installs and they have been saying that they are limited in the number of cameras that they can stream to the workstation for live viewing. Just wanted to know if anyone else had experienced this.

     

    I just tested Exacq on 2 monitors with 96 cameras. 50 of them where various MP from 720P to 5MP from different manufactures with h.264. You will not have a problem with 30+ on one machine with Exacq. What cameras do you plan on using?

     

    Below is an Exacq case study with a 19 monitor video wall with 87 Stardot MP cameras. You might find it intresting

     

     

    http://www.exacq.com/blog/2010/04/08/heavy-metal-protection-an-installer-case-study/

     

    thnx,

     

    Looks like they limited the workstations to around 2 monitors only in that case study, as they used 5x Dell Precissions to run the video wall.

  11. Posted

    I posted this in a different thread but i will do it again. This is not a problem with Exacq. I have tested 96 on 2 monitors with a Q6600 and a high-end gaming Nvideo video card.

     

    Here is a video with 4 monitors with Exacq it all comes down to the video card.

     

     

    Sorry Wireguys, I meant with all cameras being Megapixel and 3MP +. What exacq is doing in that video is doable on most good VMS.

     

    I have done a 16 monitor control room with only 2 workstations, 8 1920x1080 monitors on each (6x 24" and 2x 52"), workstations had 2x Quad Head nVidia Cards and Dual Quad Core Xeon 3.2Ghz. And this system has over 250+ Cameras, very large MP resolutions, but non H.264.

     

    I have been speaking to some industry friends that have done some large number 5 Megapixel H.264 installs and they have been saying that they are limited in the number of cameras that they can stream to the workstation for live viewing. Just wanted to know if anyone else had experienced this.

  14. Posted

    Well I am meeting with a company to do a 30+ camera Arecont install so I will let you know how this goes.

     

    Wireguys, how would you go with that many Areconts in a control room environment?

     

    1. How many Areconts at 2MP, 3MP or 5MP @ native res, low - medium compression (H.264) can you effectivley display on each monitor on a 2 monitor workstation?

     

    2. Would you be able to stream and view all 30 effectivley on a workstation?

     

    If so, what VMS are you using? If not, what are the limitations?

     

    Cheers.

  15. Posted

    "The picture would look like pure sh*t run over by a truck and placed into a plastic bag" AHAHAAHAHAHAHAAHAHA

     

    Hey Soundy, yea pretty funny line. My fav is "do you think some type of magic camera fairy is going to jump out of the lens and run over to the crooks and take a facebook photo?" " title="Applause" />

  19. Posted

    You have missed the point. amirim has not and is trying to school you, join the class.

     

    If you can't promote a position based on merit, switch to personal attack devoid of any content relevant to the topic.

     

    Best,

    Christopher

     

    Christopher, No personal attack intended, just trying to re-engage you to the thread with amirim, as he was leading you down the correct path.

     

    If there is optimal response for both sensors then the 3MP sensor would give the greater resolution. Therefore if you need to cover the same scene distances and widths both day and night and have designed the system for a known result with the 3MP sensor, the 1.3MP sensor will not give you the same outcome. This may be the difference between being able to read a license plate during the day but not at night.

     

    Without consideration of compression levels lets take an extreme example: the new Arecont 10MP Camera is 10MP Colour Sensor and 1080p Monochrome. From the Camera mounted at 3 meters we have a distance to target of 30 meters and at 30M a scene width of 20 meters (37 degree horizontal angle of view). We need to cover the same scene both day and night and have installed IR illumination to optimise the night performance. The required result is to be able to read license plates both day and night accross the scene width at the target distance.

     

    1. Will we be able to read the license plates during the day?

    2. Will we be able to read the license plates at night?

     

    Example 2:

     

    We have a good 5MP Day/Night camera mounted at 3 meters high and have a distance to target of 20 meters and at 20M a scene width of 15 meters (41 Degree HAV), we have installed IR illumination for maximum night time performance, and are using a high quality IR corrected lens, we need to read license plates accross the scene width at the target distance. Will we acheive our result both day and night?

  20. Posted

    It's an easy design.

     

    Do you only want to cover the width of the driveway or do you want a greater field of view for that camera and still have the ability to read license plates? Can this camera be located so that is not directly "headon" to cars that will drive up to the gate. If it cannot be then thats OK, just adds to what equipment is required to do the job day and night.

     

    With the other Camera locations what field of views do you require? and what type of resolution do you want at what distances. ie: General coverage to be able to see if someone is within the field of view of the camera?. Be able to Identify items of clothing or sex of person? Or be able to clearly id a person? Depending on what level of detail you require you may also need more cameras.

     

    How do you plan on reticulating cable or camera signals between the two buildings? Whats the distance between the two buildings?

     

    How many days recording do you want? Will you only access the footage from the site or do you need to have remote access, if so is there internet access at the site and what speed is it?

     

    Can you jot down any other requirements you need from the system.

     

    Will you get a licensed CCTV installer to carry out the work or will you attempt it yourself. I would strongly recommend that you get a professional CCTV company to assist and gather your own knowledge from this site so that you can communicate your design requirements with them.

  21. Posted

    I dont have any pictures to post but I use a variety of 5mp cameras. I have a little overkill but I need facial and license plate identification. There is always someone up to no good in my area. The iqeye's work very well at night in color mode, I have large streetlights and floodlights, they do switch to b/w occasionally and its also pretty clear. I have stardot 5mpdn cameras I have them set to day only they work well in color mode with streetlights. The stardots have a little more focus shift than other cameras in night mode. I did try focusing one of the stardots in night mode it was pretty good but I could never get a crisp focus for both modes at the same time. I have the arecont 5mp they are ok during the day but night mode is grainy and lots of motion blur. I have the avigilon 5mp's they are amazing during the day nothing else compares. Night mode they are ok I leave them in day mode also. Avigilon does make some b/w only cameras they are a little pricey but if low light is what you have to deal with and you need the high res I believe this is the way to go. I have seen plenty of demos of day/night cameras in night mode with tons of ir illumination and they look pretty good but providing a lots of ir light is easier said than done unless you are just trying to cover a small area I have a large storefront and 2 large lots. If I had to choose only one camera for night mode only it would be the iqeye. Daytime would be the avigilon. If the 2 companies got together they would make one heck of a camera. A friend of mine had good luck with the arecont 3.1color/1.3bw cameras at night but I need higher res.

    Will

     

    Wow, how many different NVMS platforms are you using for all those cameras?

  22. Posted

    I know IPconfigure uses a 100mm to 200mm lens on the Axis P1436 that they use for LPR. I have a request in to find out the make and model.

     

    Hi thewireguys,

     

    It's possible that for LPR they dont require a true Megapixel lens, also do you know if they use the Axis in 1080p or 3 meg for their LPR? when you get the info back please post here or PM me, would be very interested to find a true C/CS mount megapixel lens with > 100mm focal length.

  23. Posted · Edited by Guest

    Mobotix M12D-Sec with the L135 lens?

     

    No mate. Thats Mobotix speak, very different to this. The Mobotix L135 is a true 25mm lens with a 15 degree HAV on it's 3MP sensor.

     

    The L135 relates to 35mm Sensor sizes, ie; a 135mm Lens on a 35mm Sensor gives a 15 degree horizontal angle of view (HAV), so Mobotix relates this back to their lens model numbers even though their camera sensor sizes are completly different. A 25mm lens on a 3MP sensor gives a 15 degree HAV and thats the relationship. Why make it simple eh?

     

    So to convert that on the 3MP Sensor, at 1500ft you end up with a scene width of almost 390ft and at 2000ft you end up with a scene width of 520ft, and about 4-6x less pixels on target than the 5MP camera with a true 80mm focal length. (can't be bothered doing the exact math).

  24. Posted · Edited by Guest

    Anyone know of such a beast? I have a special install where the customer is looking to do a fully self sufficient video recording setup for a camp he has high up on a hill. He is looking at between $5k and $10 for a single camera setup with solar panels, batteries etc to keep an eye on a camp.

     

    I did a site visit and we can see the camp in plain line of site from the roof of his residence with only a couple minor trees in the way so I was thinking of using a 5mp Arecont with a highpowered lens to get up there. His camp would be between 1500 and 2000 feet away up in the hill. Major challenges include for one the sunlight. We would be looking up towards the hill so making sure we have as little as the skyline as possible is key but that will not really prevent the glare anyhow. An analog WDR would not be sufficient due to the distance and width of the area to be covered unless I can get a close enough view with a good lens.

     

    The width of the lot he is on covers about 65' and with a 100mm lens it will get us to about 100' width. That's why I was looking at MP but I can't even locate a 100mm MP lens. I would prefer 150mm and anything higher than that I might as well get him setup with solar LOL!

     

     

    The closest C mount one that I know of and have used is the Rainbow 8-80mm f/1.6, auto iris, IR Corrected 1/2" Megapixel Lens

     

    http://www.rainbowcctv.com/specs/mega-pixel/index.html

     

    With the 5MP Camera.

     

    @ 80mm focal length and distance to target of 1500ft you will get a scene width of 107ft

    @ 80mm focal length and distance to target of 2000ft you will get a scene width of 145ft

     

    pixels on target for the above is relatively low so would only be good for general coverage.

     

    Out of your customers budget, but best fit for purpose would be an 11 or 16MP camera with an EF mount lens 400mm Auto Iris Canon. At least you would get good pixels on target. No good for low light.

     

    Whats the lighting like?, could imagine for your scene description that it would be low.

  25. Posted

    They are talking about compressed and uncompressed images. Give the police the least compressed image.

     

    Uncompressed ?

    Where ?

     

    show me DVR which store uncompressed video ?

     

     

    Hi Alex, how have you been?

     

    Nothing annoys me more than the current trend in megapixel cameras of "my NVMS, cameras, codec etc use less bandwidth, less storage than X brand". Most people dont understand that this lower bandwidth, storage comes at a cost of image quality, ability to digitally zoom into an image and still have detail etc..because the original detail captured by the camera sensor has already been compressed and lost before it even gets recorded. Example, camera "A" dual streams to the Workstation at low compression and high image rate for live viewing, but is recorded on a different stream that has a lower image rate, different "lossy compression" used to save on storage. Really whats the point, other than keeping system infrastructure costs down and people bragging "hey my 5 megapxiel cameras only send 1Mbits, and I can record a million days on 250gig".

     

    H.264, MPEG-4 are lossy compression codecs, probably the best and smartest lossless compression codec I have worked with is JPEG2000, wow strange that the only IP Megapixel Cameras and system that works with JPEG2000 has the best reputation of image quality, but everyone uses it as a reference to how their systems use less bandwidth and storage.

     

    I tell you, since going IP the sales and marketing machines of some CCTV companies have got it all ass about!.

     

    Anyway, thats my whinge for the day. Bourbon time.

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