Vivotek VIVOTEK IP8352, Network Camera, Supreme Series, with 1.3 Megapixel, with Focus Assist and WDR Enhanc Uživatelský manuál stáhnout pdf (Strana 100)

VIVOTEK

100 - User's Manual

► How does motion detection work?

There are two motion detection parameters: Sensitivity and Percentage� In the illustration above,

frame A and frame B are two sequential images� Pixel differences between the two frames are

detected and highlighted in gray (frame C) and will be compared with the sensitivity setting� Sensitivity

is a value that expresses the sensitivity to moving objects� Higher sensitivity settings are expected to

detect slight movements while smaller sensitivity settings will neglect them� When the sensitivity is set

to 70%, the Network Camera denes the pixels in the purple areas as “alerted pixels” (frame D).

Percentage is a value that expresses the proportion of “alerted pixels” to all pixels in the motion

detection window. In this case, 50% of pixels are identied as “alerted pixels”. When the percentage

is set to 30%, the motions are judged to exceed the dened threshold; therefore, the motion window

will be outlined in red�

For applications that require a high level of security management, it is suggested to use higher

sensitivity settings and smaller percentage values�

B D

NOTE:

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 181 182

Žádné komentáře

Vivotek VIVOTEK IP8352, Network Camera, Supreme Series, with 1.3 Megapixel, with Focus Assist and WDR Enhanc Uživatelský manuál Strana 100