3 news car crash image
skyking196
Every day on the news, there's at least one story of a small store robbery, or a car that crashes through a window, etc. They show the actual footage from the security cameras and the quality is mostly awful... choppy, blurry, sometimes in black and white. You would think these days they would have high resolution video, especially if they wanted a good look at a thief or attacker. I don't know much about security cameras, is the technology just not there yet?
Answer
The reason so many surveillance systems appear to be low quality can be attributed to the need for a compromise between image quality and storage length, and cost. As you increase the quality of the image, the price of the cameras used to obtain the picture goes up, as well as how much storage space is needed to keep the same time length of data. For example, a security camera system recording at a lower 360 x 240 (CIF) resolution can keep its data approximately 3 times longer than the same security camera system recording at 720 x 480 (D1) resolution. If your surveillance system recording at CIF resolution can keep 45 days worth of video data, D1 would last approximately 15 days before it starts to overwrite.
The technology is absolutely available for higher quality images, but in most scenarios is limited by cost.
The reason so many surveillance systems appear to be low quality can be attributed to the need for a compromise between image quality and storage length, and cost. As you increase the quality of the image, the price of the cameras used to obtain the picture goes up, as well as how much storage space is needed to keep the same time length of data. For example, a security camera system recording at a lower 360 x 240 (CIF) resolution can keep its data approximately 3 times longer than the same security camera system recording at 720 x 480 (D1) resolution. If your surveillance system recording at CIF resolution can keep 45 days worth of video data, D1 would last approximately 15 days before it starts to overwrite.
The technology is absolutely available for higher quality images, but in most scenarios is limited by cost.
How quickly is it possible to learn Russian?
Q. Starting from zero knowledge, studying 2-3 hours a day, with lots of listening and reading material and daily practice with native speakers. Also Russian courses at university.
Any hope to speak it passably in a year?
I live in Canada, many Russians. I might visit Russia for some weeks this year.
Dude, if they've been studying the language for 4 years and still can't keep up a conversation, it just means they're natural-born knuckleheads. You can learn Mandarin in 5 years.
Any hope to speak it passably in a year?
I live in Canada, many Russians. I might visit Russia for some weeks this year.
Dude, if they've been studying the language for 4 years and still can't keep up a conversation, it just means they're natural-born knuckleheads. You can learn Mandarin in 5 years.
Answer
That is quite a bit of study time. You will do well. To help build your vocabulary of everyday words and terms, read the newspaper or watch the news. The same things happen daily, so you will benefit from the repetition. ie "a bomb exploded in the tunnel, a hurricane struck Cuba, an earthquake occurred in Chile killing 19, there was a car crash on the highway and the driver was injured".
If you need links or help email me and I can provide many.
That is quite a bit of study time. You will do well. To help build your vocabulary of everyday words and terms, read the newspaper or watch the news. The same things happen daily, so you will benefit from the repetition. ie "a bomb exploded in the tunnel, a hurricane struck Cuba, an earthquake occurred in Chile killing 19, there was a car crash on the highway and the driver was injured".
If you need links or help email me and I can provide many.
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