6.6 PROCESS MENU (IMAGE PROCESSING FUNCTION)
6.6.1 Filter
These are two filtering methods: Convolve 3
×
3 and Convolve 5
×
5. Convolve 3
×
3 and
Convolve 5
×
5 use a matrix of three columns and three rows, and five columns and five
rows, respectively. In the Convolve 3
×
3, filtering is applied to the range of 1 pixel
surrounding the applied point (center of matrix). In the Convolve 5
×5
, filtering is
applied to the range of 3 pixels surrounding the applied point (center of matrix).
The current image is smoothed by filtering.
The following filter functions are provided.
Filter
Description
Low Low-pass
filter
Median Median-pass
filter
High High-pass
filter
Horizontal Horizontal
smoothing
Vertical Vertical
smoothing
user1, user2
User defined filter
Noise having a certain frequency component is eliminated by the filtering function.
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