Matrix for video surveillance: 2 types + 5 parameters and conclusions
The quality of the picture received from the camera directly depends on the light-sensitive sensor, that is, on the video surveillance matrix. You can put a processor of the latest model and buy professional equipment for shooting, but if the matrix does not cope with the task, the image will not get better.
The main task of the matrix
The CCTV camera matrix is the main element of the entire monitoring system. It is an integrated circuit of photodiodes and performs one task: to form the image on which the lens is focused.
Two types of matrices
Today there are two options for matrices:
- CCD – converts pixels to an analog signal;
- CMOS – converts pixels to a digital signal.
The analog matrix is considered to be more light-sensitive and reproduces the image’s color better. At the same time, the digital type consumes less power, is cheaper, and has a wide dynamic range.
But now on the market, in 99% of cases, cameras have a CMOS matrix, and CCDs can only be found in old analog devices.
5 parameters of matrix choice
When choosing a device, it is not necessary to immediately buy CCTV cameras with a Sony matrix. It is worth taking a closer look at five important parameters that you need to consider before buying:
- resolution. It shows the number of pixels per matrix size. The higher the resolution, the clearer and more detailed the image will be;
- scanning. You will only find progressive scanning in modern cameras. This type of signal transmission is required for surveillance;
- format. The larger the matrix, the more light will fall on it. This means that the camera will shoot better in the dark;
- the aspect ratio of the frame and the matrix. The most convenient and common format is 16: 9;
- “corridor” shooting. This option is convenient for viewing narrow areas. This requires a camera that can rotate the lens 90 degrees.
How to avoid the question of choosing and buying a matrix?
To avoid getting bogged down in endless variations of a matrix, you can go the other way. Consider Faceter’s smart video surveillance service:
- it turns any camera into a “smart” device with the ability to analyze situations;
- offers real-time control;
- allows remote control of video surveillance and cameras;
- receives notifications about alarming situations at the time of their detection.
Conclusions on the topic
When choosing a matrix in a store, in 99% of cases, you will find CMOS. You can search for a photosensitive sensor by the manufacturer (for example, Sony) or the required technical characteristics.
But if you are looking for a simpler and more versatile tool, then the Faceter surveillance service is suitable. The system works automatically and comprehensively.