Haze weather reduces road visibility, so many people believe that traffic cameras will be unable to recognize and capture license plates under severe haze weather conditions. But is this the case? To borrow a famous saying: "Too young, too simple, sometimes naive...". So how do these high-tech traffic cameras resist smog?

Electronic fog penetration technology

Electronic fog penetration technology, also called "algorithm fog penetration", is mainly based on Visible light imaging, and then image restoration through certain optimization algorithms, many of which are patented by each company. In fact, it is equivalent to the defogging effect in PS.

Of course, electronic defogging also has limitations, that is, when the obstruction of water vapor and dust is too severe, image restoration cannot be performed. Therefore, electronic fog penetration can only be used in general fog environments.

Optical fog penetration technology

Optical fog penetration technology mainly utilizes the characteristics of infrared light. Because infrared light has a longer wavelength, it is less affected by interference from atmospheric particles during propagation and can penetrate a certain concentration of smoke, dust and haze. However, infrared cameras are not widely used because they are too expensive!

In addition, since infrared light is not visible light, the imaged image has no color but only black and white, so it can only be used in applications that do not require color recognition. place. However, traffic cameras require certain color recognition to facilitate identification of vehicle features, so infrared cameras are rarely used in traffic monitoring.

Electronic infrared double fog penetration technology

Cameras using this technology are more common in traffic cameras. They can not only cope with severe haze weather, but also present colorful images. In fact, this also relies on a set of relatively advanced algorithms to synthesize images to obtain clearer images.

However, this kind of camera also has disadvantages, that is, the imaging effect is poor at night, so it needs to be used with auxiliary lights and a large aperture lens to achieve the desired effect.

Can you see the traffic lights clearly in haze weather? Of course you can!

Why are the parking signals red? It’s because red has the longest wavelength in visible light and is least likely to be scattered. , so the penetrating power of red light is relatively strong. In other words, even if the haze visibility is only a few meters away, the penetrating power of the red light can reach a distance of more than ten meters.

So the excuse for running a red light in hazy weather is not valid!

The editor of Violation Inquiry Network finally summarizes

In short, in the current hazy weather, traffic cameras It can still capture people who want to take advantage of the opportunity to run a red light. In addition, going out in smog days can easily trigger traffic accidents. Drivers should be careful and don’t take chances. Safety comes first!