Troubleshooting
Image Blur, Noise, and Light Trails
Problem
Recommended Solution
The lower middle
part of the image
is blurry, while
other parts are
clear.
Re-focus your camera. For details about how to adjust the focus of a prime lens camera, see
. To
adjust the focus of a zoom camera, perform the following operations:
1. Log in to the camera web system, choose
Traffic Snapshots
(or
View
if the camera version is earlier than
9.0.0.SPC600), and click xx in the live video pane. The
PTZ Control
window is displayed.
2. Click xx and xx to adjust the focus.
Static objects are
clear but moving
objects are blurry.
Decrease the shutter limit.
1. Choose
Settings
>
Video/Audio/Image
>
Image
, and click
Exposure
.
2. Decrease the value of
Shutter limit (s)
.
If the vehicle speed is less than 60 km/h, use the default value of
1/250
. If the vehicle speed is higher than 60 km/h,
the value
1/350
is recommended.
Both static objects
and moving
objects are blurry.
Lower the spatial noise reduction level. If the effect is unsatisfactory, increase the sharpness.
A higher spatial noise reduction level indicates fewer noises but blurrier images. A lower spatial noise reduction
level indicates clearer images but more noises.
Lower the spatial noise reduction level.
1. Choose
Settings
>
Video/Audio/Image
>
Image
,
and click
Image Enhancement
.
2. Set
Denoising
to
Expert mode
.
3. Decrease the value of
Spatial denoising level
.
Increase the sharpness.
1. Choose
Settings
>
Video/Audio/Image
>
Image
, and click
Image Adjustment
.
2. Increase the value of
Sharpness
.
Moving vehicles
cause light trails.
Enable the expert mode for noise reduction and lower the temporal noise reduction level.
1. Choose
Settings
>
Video/Audio/Image
>
Image
, and click
Image Enhancement
.
2. Set
Denoising
to
Expert mode
.
3. Decrease the value of
Temporal denoising level
.
Granular noise is
displayed on
vehicle or license
plate images.
Enhance the noise reduction strength. If the issue persists, reduce the image sharpness.
Enhance the noise reduction strength.
1. Choose
Settings
>
Video/Audio/Image
>
Image
,
and click
Image Enhancement
.
2. Set
Denoising
to
Common mode
and increase the
value of
Denoising level
. Alternatively, set
Denoising
to
Expert mode
and increase the value
of
Spatial denoising level
.
Reduce the sharpness.
1. Choose
Settings
>
Video/Audio/Image
>
Image
, and click
Image Adjustment
.
2. Decrease the value of
Sharpness
.
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