CVR250
SECTION 4
CVR250OPS
20/10/06
www.snellwilcox.com
Version 1 Issue 4
4.22
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Noise Reduce…
Noise Reduce
Noise Reduce
Recursive Level...
Recursive Threshold
Sparkle Filter
Median Filter
Split Screen..
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Noise Reduce
Selecting this item will enable the noise reduction
function.
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Recursive Level
This item allows Recursive noise reduction to be
applied to the luminance and chrominance
channels.
Recursive Level
C Off
C Low
C Medium
C High
Y Off
Y Low
Y Medium
Y High
The range of adjustment is off, low, medium and
high. Defaults settings are C Medium and
Y Medium.
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Recursive Threshold
This sets the noise reduction threshold of the
recursive filters.
Recursive Threshold
5
Preset
Recursive Threshold
The range of adjustment is from Auto (0) to 7 units.
Preset is to Auto (0).
Note that applying a high threshold level may
assist with extremely noisy images; however this
may result in plain areas appearing flat.
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Sparkle Filter
This item allows a sparkle filter to be applied to the
signal, reducing the effect of sparkle noise
associated with edge-of-reception signals from
satellite feeds, impulse noise or drop-outs from
tape-recorded signals.
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Median Filter
Note that this function is only active when the
Sparkle filter is enabled.
When selected, sparkle concealment is enabled
that employs a threshold controlled 3-dimensional
median filter. This permits the removal of picture
disturbances that the normal sparkle detection
algorithm may miss. For example low-level
sparkles will be concealed. The Median filter is
particularly effective on very noisy sources. Note
that some loss of resolution may be observed
depending on the source material.
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Split Screen
This function allows the effects of noise reduction
to be easily seen by splitting the screen in half.
One half will show the picture with noise reduction
and the other half without noise reduction.
Split Screen
Split Screen Off
Left Right
Top Bottom
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Off This disables the split screen function.
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Left/Right
When enabled, the screen will be split into two
equal sections separated by a vertical white line.
The processed picture will occupy the left hand
section of the screen and the unprocessed picture
will occupy the right hand side section.
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Top/Bottom
When enabled, the screen will be split into two
equal sections separated by a horizontal white line.
The processed picture will occupy the bottom
section of the screen and the unprocessed picture
will occupy the top section.
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RGB Legaliser
When selected this will enable the RGB Gamut
legalizer. This will prevent the unit from producing
RGB signals greater than 101%.
