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September 6, 2017 116
Configuration and Operation
CM-6212 H1-I User and Installation Guide
9.5.3.4 Noise Reduction Settings
The noise reduction function consists of three settings:
·
3DNR
·
2DNR
·
ColorNR
Noise reduction settings are used to reduce or eliminate artifacts that can limit the ability to positively
identify an object. There are two types of noise:
luminance and color (chroma) noise.
3DNR and 2DNR settings reduce luminance noise, which is composed of dots of various brightness levels
(black, white and gray)
luminance noise contains dots of varying brightness levels (black, white, and gray).
It is not recommended to completely eliminate luminance noise, which can result in unnatural images.
3DNR and 2DNR settings should be configured after configuring ColorNR.
Advanced Picture Settings Screen – Noise Reduction
3DNR
3DNR (3D Noise Reduction) provides superior noise reduction and is recommended for use in in extra low-
light conditions. It is especially useful for reducing blur with moving objects. The 3DNR function reduces
image noise/snow in low-light conditions by comparing adjacent frames. A higher level of 3DNR generates
relatively enhanced noise reduction, although it creates more motion blur than 2DNR on moving objects.
The noise reduction is adjustable from Off, 3DNR Low, 3DNR Mid, and 3DNR Hi. The default setting is
3DNR Low . Click SET to confirm the new settings.
2DNR
2DNR (2D Noise Reduction) analyzes individual frames pixel by pixel and frame by frame to eliminate
environmental noise and deliver optimized image quality, especially in low-light conditions. 2DNR tends to
produce superior results for moving objects when applied to areas in the field of view where movement is
present. However, it is less precise than 3DNR.
Settings include On and Off . The default setting is On . Click SET to confirm the new settings.