Common Terms and Concepts in Video Surveillance and Imaging Systems

Common Terms and Concepts in Video Surveillance and Imaging Systems

1. #AGC (Automatic Gain Control):
A system that automatically adjusts the gain of a signal to maintain a consistent output level.

2.#AHD (Analogue High Definition):
A standard developed by Nextchip for transmitting high-definition analog video signals.

3. #ALC (Automatic Level Control):
A feature that automatically adjusts audio or video levels to maintain consistent output.

4. #Ambient Light:
The general light level present in a given area or scene.

5. #Bit (b) (Binary Digit):
The smallest unit of data in computing, represented as either 0 or 1.

6. #ANPR / ALPR (Automatic Number Plate Recognition / Automatic License Plate Recognition):
Systems used for automatically reading and recognizing vehicle license plates.

7. #Aperture:
The opening in a lens that controls the amount of light that reaches the imaging sensor.

8. #Aspect Ratio:
The ratio of the width to the height of an image or display, such as 16:9 for HD.

9. #Automatic Iris:
A lens feature that automatically adjusts the aperture to varying lighting conditions to ensure proper exposure.

10. #BALUN (Balance/Unbalance):
A device that converts a balanced signal (e.g., twisted pair) to an unbalanced signal (e.g., coaxial).

11. #Back Focus:
A mechanical adjustment on a camera that aligns the imaging sensor with the lens to accommodate different focal lengths.

12. #BLC (Back Light Compensation):
A feature that adjusts the image to compensate for strong backlighting, making objects in shadow more visible.

13. #BNC (Bayonet Neill–Concelman):
A type of coaxial cable connector commonly used in video surveillance systems.

14. #Byte (B) (A unit of 8 Bits):
A data unit consisting of 8 bits, often used to represent a character in computing.

15. #CBR (Constant Bit Rate):
A data transmission method where the bit rate remains constant throughout the communication.

16. #CCD (Charge Coupled Device):
A type of image sensor used in cameras to convert light into electronic signals.

17. #CCTV (Closed Circuit Television):
A system of video cameras and monitors used for surveillance and security.

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Source: LinkedIn

Credits: Mr. Sujith CM