How to choose and debug a night vision camera? First of all, let's understand what is a night vision camera ? Cameras that can be used during the day and at night. Because of the needs of engineering applications, we often find that black and white cameras have higher sensitivity than color cameras, and can obtain good images in darker environments. Especially when infrared light sources are used together, 0LUX can be achieved, so Called night vision cameras are color to black cameras.
Since the night vision camera's CCD responds to light differently than the human eye, especially in the daytime, it will be affected by invisible light to cause color cast, so they must be filtered out by filters. But in this way, the infrared rays in the application at night are also blocked out. You must know that the CCD's response to infrared rays is quite good at night, just like the human eye responds better during the day (of course, there is no color). In order to solve this contradiction, the R & D personnel want to provide images through the same camera during the day and night, and try many ways to solve this problem.
For a long time, there are different opinions on night vision cameras. Some say that the night vision camera is not practical, the camera turns black, and it can be used as a monitor that users watch every day, but they ca n’t turn black and white, and the color monitor can go well with black and white images; some say For a color CCD, the resolution is inherently lower than a black and white CCD of the same grade. No matter how the same CCD is processed, it is impossible to achieve a black and white effect; it must be said that although the frame accumulation improves some effects, it is at night. There is still a lot of noise, and the tailing of moving objects cannot be solved. It seems that it is scratching the boots and so on in solving the problem of day and night. There are complaints caused by the large difference between the engineering company and their own imagination after use, and some manufacturers or sellers have made different interpretations of the day and night camera in their own positions, making it difficult for the engineering company that needs to purchase the product. "Pony crossing the river".
With the continuous expansion of the night vision camera concept and the continuous innovation of related technologies, product levels are becoming increasingly rich today. The current situation is inevitable. As a buyer, how to purchase a product that suits your engineering needs and is cost-effective. Products are sometimes not easy. First of all, to choose a good night vision camera, we must cooperate with technical personnel, fully understand the user's requirements and the actual needs of the project environment, and fully understand the exact meaning of various indicators in the day and night camera. This work is difficult to do with the word "sufficient", because day and night cameras are still changing and developing, new things will continue to appear, and you will be prone to problems if you are not "full". Also, choose products with larger brands and better sellers. Generally speaking, the performance indicators on product information of products with big brands are more credible, especially the systematic nature of the products. Even if a new series is launched, there will be fewer "side effects"; good service and reputable sellers will Objectively introduce the advantages and disadvantages of a certain type of product, so that you will not take a detour in purchasing. In addition, select a few sellers and compare them repeatedly, so that you can know it well. In the end, you must see what is true, and you can make purchases after repeated testing.