Home surveillance can use different types of cameras. Hidden cameras, outdoor
and indoor camera, night vision camera, camera with motion sensor, to a full
camera surveillance system with DVR kit.
Hidden cameras are growing more and more popular in the realm of the home
surveillance camera. Tiny cameras are hidden in soft toys, on everyday objects,
stuck upon walls, or placed in inconspicuous places to provide a surveillance
image. This type of camera works well as the nanny camera, whereby a nanny or
babysitter’s behavior with children can be monitored.
However, the home surveillance camera is most often used for security and
safety purposes. This typically means that it has been used outdoors mostly.
These types of cameras now come equipped with motion sensors and night vision,
making home surveillance even more effective, without the need for professional
security services.
Motion sensor cameras use the differences in infrared light pattern to
trigger off an alarm or to flood an area with light when they are equipped with
floodlights. Infrared energy is emitted by every living being, and humans emit
at a wavelength of nine to ten micrometers. The motion sensors are calibrated to
pick up on any IR wavelength of eight to twelve micrometers. This type of home
surveillance camera also uses the principle of a photosensor, where a beam of
light is exposed to the camera’s lens, and any change in the light pattern and
saturation suggests a motion in the vicinity.
Night vision home surveillance camera uses the same IR premise as the motion
sensor camera. However, it uses the infrared emissions to put together a high
resolution image, even in pitch dark. This type of camera uses thermal imaging.
Another process that it uses is called image enhancement, resulting in the green
colored images typically associated with night vision. The many shades of green
in the image suggest tones and outlines, making it easy to distinguish shapes
and movement over an area.
