Huper huberDVR 2400 User Manual page 195

Applying Noise Reduction
The Noise Reduction option helps eliminate the noise signal of the camera input. It is more
efficient to be applied in night conditions, or after you have enabled the Wide Dynamic Vision
feature.
Noise Reduction does not only reduce the recording video size (in average 10%~50% reduction
ratio), but also maintains the same video quality before and after applying Noise Reduction. This
option is available in the "Motion Detection" dialog box. Open the "Motion Detection" dialog
box to customize Noise Reduction settings. (See Figure 4).
Figure 4: Noise reduction function
Step 1: Select the "Noise reduction" item in the "Process" list box to display its settings.
Step 2: Select/deselect the "Noise reduction" check box to enable/disable noise reduction.
Step 3: Adjust the "Noise reduction level" slider to control the level of noise reduction to be
applied on the camera video.
Reduction Ratio of the Recording Size
The reduction ratio of the video recording size varies from day to night and depends on whether
the content captured by the camera is static or not. In general, the reduction ratio at nighttime is
higher than daytime. Lesser-motion video is also higher than heavy-motion video, and HM
compression is higher than M-JPEG compression.
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