MATLAB Answers

How does imresize 'Antialiasing' work?

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YOUNGMIN KIM
YOUNGMIN KIM 2021년 7월 29일
댓글: YOUNGMIN KIM 2021년 7월 29일
I want to know how the imresize function works when I set 'Antialiasing' option to true.
There are so many methods to make Antialiasing.
The imresize function says that when I set 'Antialiasing' option true, the imresize function will do antialiasing.
So I want to know exactly how imresize function does 'Antialiasing'.
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YOUNGMIN KIM
YOUNGMIN KIM 2021년 7월 29일
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DGM
DGM 2021년 7월 29일
편집: DGM 2021년 7월 29일
If I recall from digging through the code before, it mentions using a modified kernel to simultaneously interpolate and antialias. I don't know which methods are relevant to that chunk of code, but you're free to look at the code yourself.
EDIT:
I can't really point out line numbers since it changes between versions. Circa R2015b, most everything is still in imresize.m, which is in the IPT directory. Look for a function called contributions().
By R2019b, the parts of imresize() are spread across several files in $MLROOT/toolbox/matlab/images/+matlab/+images/+internal/+resize/
Look in that directory for contributions.m and see if you can make sense of it.
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YOUNGMIN KIM
YOUNGMIN KIM 2021년 7월 29일
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추가 답변(1개)

Image Analyst
Image Analyst 2021년 7월 29일
It probably blurs the image slightly.
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YOUNGMIN KIM
YOUNGMIN KIM 2021년 7월 29일
Thank you for answering

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