D-Link DCS-3415 User Manual - Page 51

How does motion detection work?

Get D-Link DCS-3415 PDF manuals and user guides
UPC - 790069313752
View all D-Link DCS-3415 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 51 highlights

Section 4 - Configuration How does motion detection work? A C B D There are two parameters for setting the motion detection: 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 sense a slight movement while smaller sensitivity settings tend to neglect it. When the sensitivity is set to 70%, the Network Camera defines 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 identified as "alerted pixels". When the percentage is set to 30%, the motions are judged to exceed the defined threshold; therefore, the motion window will be outlined in red. For applications that require higher security management, it is suggested to set higher sensitivity settings and smaller percentage values. D-Link DCS-3415 User Manual 51

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
51
D-Link DCS-3415 User Manual
Section 4 - Configuration
How does motion detection work?
There are two parameters for setting the motion detection: 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 sense a slight movement while smaller sensitivity settings tend to neglect it. When the sensitivity is set to
70%, the Network Camera defines 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 identified as “alerted
pixels”. When the percentage is set to 30%, the motions are judged to exceed the defined threshold; therefore, the motion window
will be outlined in red.
For applications that require higher security management, it is suggested to set higher sensitivity settings and smaller percentage
values.
A
B
D
C