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pkoi

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  1. I was wondering the same,
  2. I'm currently using geovision software and would like to know if there are other fisheye camera compatible with their flattening software. I'was looking at this product that is compatible with almost every ip cam on the market, http://www.wavestore.com/page/cctv-cameras/360-degree-fisheye-cameras/ The Geovision offering in their compatible list is very limited, do you know of any 3rd party fisheyes IP Cam that might work ?
  3. for roughly 150$ you can purchase a used video card with 7 output, HD5870 Eyefinity 6 or the newer HD7870 Eyefinity 6 for ~300+$ ,, ( I have no idea why it is so expensive) Display Port (DP) support daisy chaining monitors, "17.28 Gbit/s of effective video bandwidth, enough for four simultaneous 1080p60 displays" display with DP can be harder to find ...$ Good luck with these consumer grade alternatives.
  4. I wish to clear some misconception I have about TVL-resolution, Correct me if I'm wrong Most analog DVR cannot record to more than 480 vertical line, That would mean a 700tvl equal to a 700x480 resolution. Is there a point where horizontal resolution is too high compared to the vertical ? I was interested in purchased these 960H Sony Effio cameras but I find it very hard to search for DVR that can record this higher resolution. What do you think of thes 960 x 576 cards ? http://www.ebay.ca/sch/i.html?_nkw=960x576&_sacat=0 Also why are sone camera advertised as 700tvl when , for example, highest resolution Pelco FD2-V specs show : http://www.pelco.com/documents/product/en/shared/analogcomparisonguide.pdf Sensor : 960H Resolution : 976 (H) x 494 (V) Horizontal resolution : 650 TVL Since most-all cameras and DVR can both work in NTSC and PAL mode, Shouldn't all CCTV be using PAL only ?
  5. For some reason it's impossible to grab more than 5fps per camera with their software.
  6. I think using a webcam as a security camera for protecting the DVR PC area is much more cost efficient, As long as you don't spend to much time setting the software, (rarely the same as Analog software) I would personally use iSpy (free) or i-Catcher (costly). Soundy was right, in that USB 2 over UTP was costly. USB 1.1 are dirt cheap though, (8$) At the very worst one could use a cheap PC as as USB HUB, as long as it has a GB Ethernet it should be fine sending over ~6 webcams. I would also imagine a setup where there is already 10+ workstations, Having to watch employes over this kind of system would be very cost efficient. USB over IP http://sourceforge.net/projects/usbip/develop a thread on webcam on USB 1.0 over Cat 5 http://www.wxforum.net/index.php?topic=9782.0
  7. What did I just read ? If you're explaining all that because you noticed it was B/W note that I explained why in my post. As someone who has removed the IR filter from his Canon 20D, I kinda know what you're talking about.
  8. The back of what ? I'm asking. Nevermind, I'll setup a test ... Aint that a software + dynamic range issue ? I don't have much time right now, but this is what I have for now. http://dl.dropbox.com/u/2479243/2012-04-09%2023-45-24.973.wmv I don't have a pole light in front of my house and have big trees so the lightning at the end is almost pitch black. I could not record 1080p since I was running it on a kind of netbook which like to downclock to 800mhz when off AC. I though I had broken the webcam firmware since it seemed it was stuck on B/W on a new PC. Apparently the settings are saved in the camera itself, (it was on lowest color saturation)
  9. What do you mean by "bright back lighting" ? What would that achieve ?
  10. You can plug as many webcam as you want, unless there are driver conflict, (not gonna happen with Logitech / Msft) UBS2's 480mbps is much less than what is needed for uncompressed 1080p , It is even more bandwidth than what most hard-drive can write at, (125mb/s or 1 gigabit/s) Given the Logitech c920 has h264 compression in the camera , I think you could run ~8 of them on a shared 480mbps. And adding a 10$ USB2 - PCI addon card is adding another 480mpbs.
  11. OmniVision make sensor for high end IP camera, I little doubt their printed specs. Lets say for a moment the sensor is not that bad. Start at 30$ Swap the USB controler for an Ethernet one, remove high quality microphone, remove audio processing chip, remove auto-focus mechanism. You are left with 470$ to find a slightly improved sensor, h.264 chip (15$?) a custom metal box and a dozen IR LEDs. I wouldn't be surprised if BOM for good IP cameras was about 15% the cost they sell them for. <-- This is the point I was trying to make.
  12. Camera : Microsoft LifeCam Studio Sensor Type : CMOS Color (OmniVision OV2710) Sensor Size / Pixel Size : 1/2.7" (3 x 3 µm) Sensitivity : 3300 mV/(lux-sec) Look at http://www.flickr.com/photos/sharpshutter/6667338191/ Vivotek are rather cheap for good 2mp camera, they still cost ~500- 900$
  13. The sensor must be 1/3" , 75° diagonal field of view With 1080p I'd rather lens be as wide as possible anyway. My main problem right now is the software, it require a lot of processing power to compress the stream, If I could find a way to use a CUDA enabled encoder. For USB length as I said I'm using powered extender or USB over cat5. 15ft is the spec but 20ft + is possible. IR filter : There are various astronomy website that have dissembled this webcam to convert it for astronomy uses, removing the IR filter in the process. I'm currently looking at a Logitech c920 (75$) which has h.264 hardware built in.
  14. I've been learning about CCTV systems for ~2 years and I'm appalled by slow progress and the price of improved products. This webcam was released about 3 months ago at MSRP of 100$, it is now selling at ~50$ shipped.
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