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CPP100
SECTION 9
CPP1OPS
25/10/06
www.snellwilcox.com
Version 1 Issue 6
9.27
Enhancer cont.
Examples For Use
De-enhancement
-
ideal for graphics and extremely sharp pictures.
Decoder match
-
designed for digital inputs when the type of
external decoder is known or for composite inputs.
Video
-
for 2:1 reduction in bandwidth.
Minimum enhance
-
designed for pictures that are fairly
soft for example film originated pictures.
Medium enhance
-
the recommended setting for the majority of
pictures.
Maximum enhance
-
ideal for extremely soft archived material,
multi-generation film copies and
semi-professional sources.
Other Information
It is important that enhancement levels used match the type of pictures being enhanced for the best results.
Pictures will suffer from artefacts such as overshoots if the enhancement level is set too high.
The main indication that the enhancement level is set too high is the effect of noticeable outlining around
objects.
With the coring switched off very small detail is enhanced which with some sharp pictures can lead to
unnatural effects on certain textures. This can be solved by reducing the enhancement level.
The easiest way to check the level of enhancement is with coring switched off.
If the input pictures contain a high level of noise, coring may be necessary, otherwise the noise will be
enhanced and the result will be poor.
Enhancing noise is an unfortunate consequence of the enhancement process and coring allows this problem
to be dealt with but at the expense of low amplitude detail and texture. As a result coring should not be used
unless necessary. Setting the coring level too high can result in ‘cartoon-like’ results as small amplitude detail
and texture is lost.