Surveillance Camera Related Terms Explained

(1) Resolution: The resolution in use of a surveillance camera refers to the number of points displayed in the horizontal and vertical directions of the screen. The higher the resolution of the surveillance camera, the clearer the image captured.

(2) Sharpness: The sharpness of the surveillance camera is represented by lines, which are divided into horizontal lines and vertical lines. The more lines, the higher the sharpness and the clearer the image.

(3) Signal-to-noise ratio: refers to the ratio of the signal frequency to the clutter frequency in the surveillance camera, which is often expressed by DB. The higher the signal-to-noise ratio, the better the surveillance camera and the better the image signal, that is, the clearer the image.

(4) White balance: White balance is an indicator that describes the white accuracy of the red, green, and blue primary colors in the display. The color quality of the picture can be improved by adjusting the white balance of the camera inside the surveillance camera.

(5) Backlight compensation: When the camera is shooting in a backlight environment, a black image will appear on the screen. This is a disadvantage that cannot exist for surveillance cameras that work 24 hours a day, and backlight compensation is required at this time. With the backlight compensation function, if the camera detects that the video level in an area of the captured image is relatively low, it will increase the amplitude of the output video signal to make the image clearer.