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Recently, the number of crimes committed has been recorded in many countries. Most of them occur at night when it is difficult to identify the robber and bring him to justice. To protect yourself and your property, you must use night surveillance cameras. In most cases, these devices work effectively through the glass to be installed in front of a window without fear of a substantial deterioration in video quality.
Devices that can be used in the dark are pretty diverse. Among them, cameras are best suited for home use. All manufactured models are divided into three groups, each of which has its characteristics, advantages, and disadvantages. With this information, you can choose the best option for your home.
NV CCTV cameras are in demand all over the world. They help to monitor the situation in the dark, as well as fix any illegal actions. However, in some cases, the performance of such cameras may decrease. This is due to various problems resulting from placing the device in front of a glass window.
The most common problem is glare or similar camera reflections in the glass. They cause a deterioration in the quality of the video recording and make it more difficult to identify persons caught on it. In the presence of glare and reflections, the picture becomes blurry. Also, white spots and excessively light areas appear on it. Another significant problem is the difficulty of triggering various sensors (for example, those that respond to movement). Because of this, the camera may not notice a person's approach and remain turned off.
IR devices work well without any obstruction. However, when glass appears in front of their lens, the video recording quality drops sharply. This is due to glare and camera reflections in the window.
To correct the situation, you need to follow a few simple steps. The first of these will be turning off the infrared illumination. This will slightly reduce the quality of the resulting video but will avoid the appearance of glare on the window. It is also worth turning off all indications on the camera. In this case, it will not be reflected in the glass and will not interfere with creating a good-quality recording.
Another effective way to get rid of glare and reflections is to place the device as close to the glass surface as possible. So any defects will be minimized, and the image will become more apparent. Sometimes, a suction cup mount is included with night surveillance cameras. It can be used to fix the device on the outer surface of the window. This will avoid any distortion and achieve perfect video quality.
It is very long and challenging to view records made all night long. Most manufacturers of such devices began to equip their models with motion sensors to solve this problem. They capture any movements of objects and people while simultaneously activating video recording. This addition to the cameras makes it possible to record a minimum of information, simplifying the process of studying it as much as possible.
Night cameras use two types of sensors. The first of these is the passive IR sensor. It will activate video recording as soon as it detects heat or infrared radiation. If you place equipment with such an addition outside the window, the sensor will react to any actions only in 20-30% of cases. This is unacceptable in most cases, so users should take steps to eliminate this problem. The correct solution would be to install the equipment on the windowsill in front of the open window. An alternative would be to fix the device outside the glass barrier.
The second type of sensor captures any changes in pixels. Its work is based on a particular software algorithm that allows you to activate video recording in the presence of any movement. Cameras equipped with such sensors work effectively even through glass. Therefore, they are recommended to be used in most cases when it is impossible to place the device outdoors.
Night surveillance cameras do not always work effectively through the glass. You need to configure the device properly to correct the situation partially. In this case, it will function properly and provide the user with sound-quality video recordings. Also, do not forget about other measures that should be taken to improve the resulting picture.
Night surveillance cameras can work effectively even with various obstacles, such as glass. However, for this, they must have unique properties and characteristics. If you manage to purchase such equipment, any crime committed will remain on video recording, and it will become much easier to find the violator of the law.
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