Fisheye video surveillance, by assimilation to the view of fish, is an
IP video surveillance camera which allows you to monitor an entire area from a
fisheye lens. This objective has the very surprising feature of offering you a
complete field of vision. Thanks to this, you can monitor a whole room with
just one camera! Enough to ensure the security of your business with the least
effort. Be careful however to install the camera in a suitable place. For this,
you may need the help of a professional, do not hesitate. A few more words
about fisheye cameras.
How it works?
The lens is ultra wide-angle and uses strong visual distortion to
create a full panoramic image. Fisheye lenses use unique mapping that gives
images a convex appearance, instead of producing images with a straight line of
perspective. The lens has a very short focal length, which widens the field of
vision.
Camera with diagonal fisheye
lens
These are the most common fisheyes that are found most often on security
camera in Chicago. With a focal length of about 15 mm, they allow you
to cover an English of 180 degrees and offer a full-size image.
Camera with circular fisheye
lens
The rarer circular fisheye camera lens offers a 180 degree angle in
all directions. Its focal length is approximately 8 mm. It has the
particularity of displaying the recorded image on a circular view. The image is
strongly distorted and distorted, the distortion being more or less accentuated
depending on whether the objects are more or less close to the lens.
Miniature fisheye lens
Most CCTV cameras use a miniature fisheye lens. They are smaller,
which makes it possible to cover a larger area with a more complete frame.
Related Post: What
accessories for video surveillance?
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