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2024-03-14
skin filters complicated roughness remove nonlinear 机器 smooth ir verify
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NONLINEAR DIGITAL FILTERS FOR BEAUTIFYING FACIAL IMAGES
IN MULTI-MEDIA SYSTEMS
Kaoru Arakawa
Dept. of Computer Science, Meiji University
ABSTRACT These filters have nonlinear structures, since linear
filters cannot remove such small-amplitude fluctuation
without blurring the edges in the images. Three types of
nonlinear filters are proposed here. The first one is quite a
simple one which is effective for smoothing the skin
completely, removing roughness and small spots on skin.
This filter can be easily realized by simple hardware. The
second is an extended form of the first, which is a little
more complicated but can smooth the skin more naturally.
The last is more complicated one but can preserve the
natural roughness on skin and can remove relatively large
spots on skin. Finally in this paper, computer simulations
for actual face images are shown to verify their high
performance.
Nonlinear digital filters for new application in multi-
media systems, that i


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