Beamage Series User Manual
Revision 9.0
31
Figure 4-26 Data Computations
4.6.1. Filters
Figure 4-27 Filters Button
Figure 4-28 Available Filters
The “
Filters
”
button opens a drop-down menu. Two spatial filters are available:
“
Smoothing
”
and
“
Despeckle
”
. These tools are great with low quality laser or low level signals.
Note that the “
Despeckel
”
filter is more “aggressive” than the
“Smoothing”
filter, which makes it ideal for very poor quality beams.
Figure 4-29 Spatial Filter Example
Warning
If an image is saved while it is in “
Filter
” mode, the resulting filtered image
will be saved
Smoothing Filter
The
“Smoothing”
filter performs a 3x3 mask triangular filter. The center pixel has a higher weight (3/11)
than the surrounding pixels (1/11). If the filtered pixel is on the edge, it will set the surrounding pixels
outside the image to 0.
Despeckle Filter
The
“Despeckle”
filter uses a 9x9 mask flat filter to perform a simple averaging of the central pixel. All
pixels have the same weight (1/81). If the filtered image is on the edge, the surrounding pixels outside the
image will be set to 0.
