Wherever we look, a security camera is a technology that makes our lives easier, but the year 2022 is still not as clear as desired. So why?
While phone cameras are developing regularly, security cameras are almost like twenty years behind presents the image; pale colors, grainy and blurry images… It’s not much different from UFO images.
For this reason, the face of the thief or the license plate of the suspect vehicle may not be visible. With video technology so advanced There are actually quite logical reasons why this problem still persists.
In order to understand the reason for this, it is necessary not to equate security cameras with modern cameras.
Because unlike cameras as we know it, security cameras can make a dark area seem bright, and the resulting image is not perfect. Like it was taken with a calculator It provides an image but at least gives us an idea of the event it records. It can be a life saver as it has IR (infrared) technology. But of course, this is not the only answer to our question.
The task of these cameras is actually very tedious because 99% of the images recorded by those who are placed in the home or workplace are not noteworthy.
It would be very expensive to record that many videos in 4K quality. There are security cameras that record high-quality images, of course, but the vast majority storage problem and it prefers low quality cameras because of the expensiveness of these cameras.
If you also need to buy cameras to shoot different rooms, the cost will be doubled or tripled.
Consider also big businesses; dozens of lines hundreds of cameras First-class equipment may not be preferred in order to save money in budget calculations.
In fact, most of the time, security cameras are not operated in homes or small businesses. potential criminals deterring using for.
As a result of continuous image recordings, recorded videos are deleted in 24 hours but are sometimes retained for weeks or months.
To fit so much data Compressing videos may be required, which reduces the quality of the video. Even a 24-hour video requires about 1TB. If we take into account the footage from dozens of cameras, the storage problem becomes even greater.
In fact, the first people to watch the image on the camera will not see a bad image, but while these images are transferred to YouTube or TV, videos because it is compressed over and over again the image deteriorates further until it reaches us.
For example, in London about 500,000 There is a security camera. There are more than 15,000 cameras in tube stations alone, recordings from there are recorded and stored for 3 days, while images from London’s train stations are kept for 28 days. This requires a lot of storage capacity.
Since security cameras shoot in harsh conditions, there are different factors that distort the image.
Although some are made to withstand harsh weather conditions, some are still water, abrasion, dust, spider webs, insects sensitive to As the lenses will be affected due to all this and more, the shooting quality will decrease.
One of the reasons why important elements such as faces and plates cannot be easily selected is the “trimming” process.
These cameras a wide angle they record. If you zoom in on a small area of the image and crop it, the image will naturally become much more blurry. Trimmed, zoomed videos are shown in the news instead of the original video. We experience this problem even with the photos we take with the phone.
Who knows, maybe one day a final solution to this common problem will be found.
Sources: Science ABC, Science Direct, University of California, Thiarajar College of Engineering
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