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6.3 Scaling filters
Regardless of the warping algorithms selected, a scaling filter will be applied. Scaling filters
are configured using the Algorithm Setup window. Select the tab “Filter”, Figure 6-2, and
select your desired filter. Four different scaling filters are supported:
•
Lanczos, B-spline, C-spline, Linear
Figure 6-2. Scaling filters
6.3.1 Lanczos filter
The Lanczos filter is using a 4x4 kernel. This filter is recommended for use with images that
contains large amounts of fine detail, for example text with small fonts. On thin, diagonal or
curved lines, some ripple may be encountered.
6.3.2 B-spline filter
The B-spline filter available in multi image processing system is of the type Cubic B-spline.
This filter is slightly softer than the Lanczos filter, but has better quality on curved and straight
lines. In many cases, this filer will give the best image quality and is therefore the default
selection.
6.3.3 C-spline filter
The C-spline filter is short for Cubic Hermite spline interpolation. It is a filter of third-degree
spline with each polynomial of the spline in Hermite form (Named in the honour of Charles
Hermite). This filter gives a good combination of smoothness, detail and average ripple on
lines.
6.3.4 Linear interpolation filter
This filter is also a polynomial filter, but is based on linear interpolation for curve fitting.
In modern systems, it will give an unnecessarily low quality image scaling, but some
applications may still require the use of this filter.
Summary of Contents for WB1920
Page 2: ...english 2 Multi image processor User s Guide Introduction...
Page 10: ...english 10 Multi image processor User s Guide What s in the Box...
Page 26: ...english 26 Multi image processor User s Guide Getting to know the GUI...
Page 48: ...english 48 Multi image processor User s Guide Black Level Management...
Page 58: ...english 58 Multi image processor User s Guide Technical specifications 12 2 Mechanical...
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