for, it sounds quite mysterious? In fact, to put it bluntly, it is to let computers and machines "see" things, and then help us stare at the pictures taken by those cameras, so that there will be no trouble. There are cameras everywhere now, so how can you keep an eye on someone? So this technology comes in handy, which can automatically detect abnormal situations and remind people on duty to pay attention.
First of all, I have to say a few things about this – it is not just about storing the image, it needs to be "analyzed". That is to say, feed the machine a lot of pictures and videos, let it learn, what to learn? Learn how to recognize people? Oh no, it is not only recognize people, but also situations where we feel uneasy and may cause trouble? Or – that specific behavior, specific things appear where they shouldn't? For example, if someone is wandering around the gate or next to an important machine for too long, it has to "scream"!
So how does it do these magical things? There are usually several steps to disassemble it. Listen to me and talk slowly:
① The image must be clear first – the pictures taken by the camera may be blurry, or too bright or too dark to see clearly? First, wash it clean and debug it to make it clearer so that the subsequent 'program' can be understood.
② Then kick out useful things from the screen? No, it's 'tugging' out! For example, frame the outline of a person and a car, and ignore other messy backgrounds for now – this step is called 'target detection', which is very important!
③ After you have set your sights on that thing, you have to follow it to see where it runs Computer vision for security monitoring, whether it is moving around. If a figure sways at the construction site in the dark, you have to follow and see what bad things it wants to do?
④ After reading and analyzing, the most important thing is to judge whether there is any 'trick' in this matter'! Is it normal? For example, if a person runs out quickly, carrying a big bag in his hand? Or is there a little flame coming out where there shouldn't be fireworks? This must be recognized.
so? After using this for, what are the direct and convenient places and tips? Or take out some practical experience – pay attention to practical things:
* In the past, I had a big TV wall and several people stared at it with wide eyes, making them dizzy and they were easily missed! Now, the machine is staring at it without blinking 24 hours a day. As long as you set up a few moves and sets rules, it will call the police as soon as it should – this is much more reliable than staring at it, and it saves much more effort!
Can remember your face! That is to say, if there is an unpopular person in our files, or someone the public security department is looking for? As soon as he appeared, even if there was a dim distance away, the machine scanned it and looked a bit like it, so he quickly reported it. Can he be prepared for an accident in advance?
Not only people, but some important areas are set to avoid entering? For example, at the door of the vault where money is placed? Or next to a high-voltage electric machine? If someone accidentally or deliberately slips over and gets closer a little, the alarm will sound – isn't it convenient!
Can count the heads! In a crowded place, oh no, in a place with a lot of people, like a shopping mall, will something happen if it is too crowded all of a sudden? This broken technology can roughly count how many men and women are there. If there are too many, the staff will be reminded to ask everyone to spread apart!
I heard that it provides global procurement services for weak current intelligent products! Remember, if you need to buy relevant equipment in the future, you may be able to use it!
Someone must be wondering? Let me guess what questions you are going to ask, and then use this technology background to tell me how to deal with it!
Q: Will this thing be mistaken in a hurry? For example, two people are like twins. Can they tell who is and who should not be caught wrong?
Answer: This question is good! Indeed, sometimes the image is unclear, the light is not good, or the eyebrows and eyes of two people are too similar, which may be a little mistake. So, the current technology is trying to make it more accurate! For example, install cameras from multiple angles to take photos together? Or not only look at the face, but also look at the posture of the body? In short, try not to let it accuse a good person, but never let a bad person go!
Q: What if the network suddenly breaks down for a while or the power goes out? The camera cannot work, isn’t there a small piece of the entire security wall missing?
Answer: This brain is used very carefully! How can you do such a big thing without 'insurance'? What are the general formal systems? Are they all connected with very complex networks like dual-wires, or are they left with a backup power interface? Even if the main line is useless, the auxiliary line can still hold on to work for a while, send the key image to the cloud or the pre-set host to store it. If the network is not very disconnected, it can usually be done!
In this professional field, when installing this, you can talk about some tricks or things you can pay attention to:
1. Where to put the camera, this is so important! You can't just find a place to go inside and just finish it. First of all, you have to look at the core of the open space you are going to monitor. Secondly, you cannot be blocked by leaves, nor can you be blinded by street lights and cannot be photographed clearly. The picture is good! Think about it, if the camera is installed incorrectly, it is impossible to see clearly. The analysis afterwards is too awesome!
2. The machine is 'brain' fast enough! If so many pictures come in every day, if you are stupid (oh no, it’s slow) and unable to analyze any results for a long time, when it is finished, the thief may have run away with his things! Therefore, the configuration of the 'box' or server that processes the image cannot be too bad, it must run very fast.
Computer vision surveillance security operation system is an important force to ensure the safety and stability of buildings, factories and large areas! Moreover, in the near future, we will inevitably be smarter and more powerful and effective to help us protect our property and personal safety!
Leave a Reply