ARECONT VISION AV100 VIDEO SYSTEM USER MANUAL
52
Arecont Vision 425 E Colorado St, 7
th
Floor Glendale, CA 91205 Revised 12/20/2010
www.arecontvision.com
www.arecontvision.comwww.arecontvision.com
www.arecontvision.com
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Does your software include motion detection?
Does your software include motion detection?Does your software include motion detection?
Does your software include motion detection?
Our software does include motion detection. Most Arecont Vision cameras also support on-board
motion detection that, in contrast to software motion detection, does not take up CPU cycles. The “on
camera” feature was implemented to reduce the overall network bandwidth so the camera itself will
not send images until motion is detected. The user can adjust 3 motion detection sensitivity settings
and specify up to 64 motion detection zones.
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What
WhatWhat
What
adjustments
adjustments adjustments
adjustments can be made
can be madecan be made
can be made
to reduce motion blur?
to reduce motion blur?to reduce motion blur?
to reduce motion blur?
The shutter speed is automatically controlled by the camera. Motion blur may occur when the camera
operates at slow shutter speeds (long exposure times, such as the scene being relatively dark.
Arecont Vision cameras provide a number of options that allow the user to control auto-exposure
behavior when illumination is low.
The user can set the preferred exposure time that the camera will attempt to maintain as long as
illumination level allows. This setting essentially allows the user to choose the tradeoff between gains
and exposure time at reduced light levels. There are 3 basic settings: Speed, Balance, and Quality
(Figure 15). These settings can be selected from “Low Light Mode” menu Mode list. The Speed
setting will result in higher image noise but will attempt to maintain 10ms exposure time for as long
as possible, reducing motion artifacts. The Quality setting will maintain 40 ms exposure time,
resulting in low-noise image with some motion blur in low light. The Balanced setting falls between
Quality and Speed.
There are also two special modes, High Speed and MoonLight™, which can be used for very fast
moving targets and very low illumination, respectively. High Speed mode allows the user to specify a
fixed exposure time in terms of milliseconds (from 1 to 80). While this will allow crisp video of fast
moving vehicles, the side effect of this setting is that low-light performance of the camera will be
significantly worse (up to 800 times) than in default mode. Therefore, High Speed should only be
used for well lit scenes.
The other special mode, MoonLight™ implements long exposure times of up to 0.5 seconds in
combination with proprietary noise cancellation technology. This mode allows viewing under
extremely low illumination conditions. It is important to note, that MoonLight™ is NOT digital frame
integration and will offer significantly better image quality than cameras that employ digital frame
integration. However, the motion blur will still be significant.