Surveillance cameras work by using a combination of hardware and software components to capture and record video footage.
The hardware components include a lens, an image sensor, and a processor. The lens focuses light onto the image sensor, which converts the light into an electronic signal. The processor then processes this signal to create a digital image that can be saved or transmitted.
When the camera is activated, the image sensor continuously captures light and converts it into an electronic signal. This signal is then processed and compressed by the processor before being saved onto a storage device, such as a hard drive or a memory card. The compression process reduces the size of the video file, making it easier to store and transmit.
Surveillance cameras can be set to record continuously or only when motion is detected. When motion is detected, the camera will start recording and save the footage onto the storage device. Some cameras also have the ability to send alerts or notifications to the user when motion is detected.
Overall, surveillance cameras work by capturing light through a lens, converting it into an electronic signal using an image sensor, processing and compressing the signal with a processor, and saving the digital image onto a storage device. This allows users to monitor and record video footage for security and surveillance purposes.