Arecont Vision av10005 Guia Do Utilizador

ARECONT VISION USER MANUAL

Arecont Vision 425 E Colorado St, 7

Floor Glendale, CA 91205 Revised 5/9/2010

www.arecontvision.com

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daygain

daygain – allows to specify the automatic switching point for night-to-day transition as “hysteresis”
relative to night-to-day transition; Higher values will cause the transition to day mode at higher
illumination level (valid values for AV3130 are 0..6, for –DN models are 1..4)

As AV3130 camera has two sensors with different resolutions it is most convenient to specify the required
image size in terms of percentages of the full image size as shown in the following example:

http

http://200.168.1.10/image?res=full&

://200.168.1.10/image?res=full&

://200.168.1.10/image?res=full&x0=0%&y0=0%&x1=100%&y1=100%&quality=12&doublescan=0

x0=0%&y0=0%&x1=100%&y1=100%&quality=12&doublescan=0

Motion Detection Control Parameters

The unique design of Arecont Vision cameras allows for highly accurate 64-zone motion detection (also see
Motion Detection). Motion detection is achieved by analyzing inter-frame brightness changes on a pixel-by-
pixel basis. To provide accurate motion detection in low contrast and low light environments, EACH pixel of
EACH frame is analyzed. The user can set the size of motion detection zones (via mdzonesize

mdzonesize

mdzonesize), select the

sensitivity to motion (via mdlevelthreshold

mdlevelthreshold

mdlevelthreshold), select the zones where the motion detection has to be blocked

(via mdprivasymask

mdprivasymask

mdprivasymask) and specify the size of the moving objects of interest (via mddetail

mddetail

mddetail). Motion detection

information can be obtained from the camera in terms of “amount” of motion in each zone (via mdresult

mdresult

mdresult) In

addition to retrieving motion detection information, the camera can also be configured to output images only if
motion is detected (via mdmode

mdmode

mdmode).

The On-camera motion detection unit utilizes up to 64 distinct zones. All zones are square, have equal size
and are arranged in 8 rows with 8 zones per row. The zones are numbered from 0 to 63, upper leftmost zone
having number 0 and lower rightmost zone having number 63. The zones are broken into sub-zones of size
32x32 pixels. The size of zones is specified in terms of the square root of the number of sub-zones via
parameter mdzonesize

mdzonesize

mdzonesize. The zones can be defined to be as small as 7x7 sub-zones to as large as 15x15 sub-

zones. By setting the limit on how many sub-zones should contain the motion for the entire zone to be
considered to contain motion the user can effectively decide on the size of the moving objects that should be
detected. This is done via the parameter mddetail

mddetail

mddetail.

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motiondetect

motiondetect – enables on-camera motion detection (valid values are “on” and “off”)

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mdmode

mdmode – motion detection mode for mjpeg streams (valid values are “on” and “off”); if set to “on” the
camera will only output an image in the presence of motion; If the motion is not detected, the field
following the frame boundary separator --fbdr will be followed by Content-Type: text/plain (instead of
usual -Type: image/jpeg) and the image data will be substituted with the text message “no motion”

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mdtotalzones

mdtotalzones - number of independent motion detection zones; Currently must be 64. There are 8
rows of zones, 8 zones per row. Note that depending on zone size and the camera model (image