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I have two questions about the implementation of the loopback interface:
If either question is not formulated quite right, feel free to turn it into a better formulated one and answer that instead. Thanks. -- 173.49.13.59 ( talk) 05:40, 28 February 2013 (UTC)
nc -l 127.0.0.5 9999
echo hello | nc 127.0.0.2 9999
I would like a digital camera that can take images with more than three color channels.
I hope an image from such a camera could distinguish objects that appear similar color in a regular RGB camera image. I don't know whether the channels should be all in the visible light range, or also in the near infrared or near ultraviolet. The images of the different colors must be taken simultanously (or at least within 50 milliseconds) from the same viewpoint to the same scene, so swapping filters by hand is not a good solution for me, because I want to photograph moving objects.
Where can I buy such a camera for a reasonable price? What terms should I search for on the internet if I want to find some?
If multiple models are available, here are my preferences, but these are not absolute requirements. It should be possible to connect the camera to a computer and send the images right after taking, such as with a webcamera or security camera. It should work indoors, in a room with fluorescent lightning. It should be able to take motion pictures, say at least 20 images per seconds. Should have a resolution of at least 640x480. Should have a not too small viewing angle, such as at least 90 degrees for the longer side of the image. There's no need for variable optics, a fixed zoom and focus fixed to infinitely far away is fine.
– b_jonas 21:11, 28 February 2013 (UTC)
Bayer and similar consumer sensors are three colors. Multispectral image, Infrared photography and Ultraviolet photography are all used for various industrial, medical, military and scientific purposes. They require special cameras. Jim.henderson ( talk) 02:00, 1 March 2013 (UTC)
Three-strip Technicolor worked by multiple cameras looking through the same path, but dichroic hadn't been invented; beam splitters called for very bright lighting but it worked well, with careful adjustment of three identical cameras. So, use two identical cameras except one doesn't have the hot mirror and, well, doing something about the Bayer or similar filter is going to be more difficult but not entirely necessary. Great fun for someone with the patience that I lack. Jim.henderson ( talk) 14:51, 1 March 2013 (UTC)
I have internet over my house and used a switch, with it I spread the internet to 4+ computers. 2 years ago I got some wireless router (w311r+ from tenda), I did that because I needed to be able to make equipaments be able to connect to internet on the wireless way. I configured the entire stuff, and it used the 3 equipaments, speedstream (thats the internet modem), the (4 ports + 1 port) wireless router and the (8ports) switch. This month, for some reason my internet stopped working, I tried to make it work but I forgot how I did it in the first place. I made it work but using only the internet modem and the switch, I can't make it work (or maybe configure) the wireless router, and so wireless stuff cant use internet.. What is not needed here (the switch will really be needed if I make the wireless router work?) and how I would configure the entire stuff? — Preceding unsigned comment added by 201.78.173.209 ( talk) 22:55, 28 February 2013 (UTC)
Computing desk | ||
---|---|---|
< February 27 | << Jan | February | Mar >> | March 1 > |
Welcome to the Wikipedia Computing Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
I have two questions about the implementation of the loopback interface:
If either question is not formulated quite right, feel free to turn it into a better formulated one and answer that instead. Thanks. -- 173.49.13.59 ( talk) 05:40, 28 February 2013 (UTC)
nc -l 127.0.0.5 9999
echo hello | nc 127.0.0.2 9999
I would like a digital camera that can take images with more than three color channels.
I hope an image from such a camera could distinguish objects that appear similar color in a regular RGB camera image. I don't know whether the channels should be all in the visible light range, or also in the near infrared or near ultraviolet. The images of the different colors must be taken simultanously (or at least within 50 milliseconds) from the same viewpoint to the same scene, so swapping filters by hand is not a good solution for me, because I want to photograph moving objects.
Where can I buy such a camera for a reasonable price? What terms should I search for on the internet if I want to find some?
If multiple models are available, here are my preferences, but these are not absolute requirements. It should be possible to connect the camera to a computer and send the images right after taking, such as with a webcamera or security camera. It should work indoors, in a room with fluorescent lightning. It should be able to take motion pictures, say at least 20 images per seconds. Should have a resolution of at least 640x480. Should have a not too small viewing angle, such as at least 90 degrees for the longer side of the image. There's no need for variable optics, a fixed zoom and focus fixed to infinitely far away is fine.
– b_jonas 21:11, 28 February 2013 (UTC)
Bayer and similar consumer sensors are three colors. Multispectral image, Infrared photography and Ultraviolet photography are all used for various industrial, medical, military and scientific purposes. They require special cameras. Jim.henderson ( talk) 02:00, 1 March 2013 (UTC)
Three-strip Technicolor worked by multiple cameras looking through the same path, but dichroic hadn't been invented; beam splitters called for very bright lighting but it worked well, with careful adjustment of three identical cameras. So, use two identical cameras except one doesn't have the hot mirror and, well, doing something about the Bayer or similar filter is going to be more difficult but not entirely necessary. Great fun for someone with the patience that I lack. Jim.henderson ( talk) 14:51, 1 March 2013 (UTC)
I have internet over my house and used a switch, with it I spread the internet to 4+ computers. 2 years ago I got some wireless router (w311r+ from tenda), I did that because I needed to be able to make equipaments be able to connect to internet on the wireless way. I configured the entire stuff, and it used the 3 equipaments, speedstream (thats the internet modem), the (4 ports + 1 port) wireless router and the (8ports) switch. This month, for some reason my internet stopped working, I tried to make it work but I forgot how I did it in the first place. I made it work but using only the internet modem and the switch, I can't make it work (or maybe configure) the wireless router, and so wireless stuff cant use internet.. What is not needed here (the switch will really be needed if I make the wireless router work?) and how I would configure the entire stuff? — Preceding unsigned comment added by 201.78.173.209 ( talk) 22:55, 28 February 2013 (UTC)