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 moire patterns

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T O P I C    R E V I E W
jrpcguru Posted - Oct 19 2021 : 14:53:34
I just came across moire patterns in a photo of a suit coat at a wedding. I thought I had read somewhere in your help file that there was an ImageEn setting that solved or reduced this problem, but I couldn't find it. I discovered that one of my programs had the problem and one didn't, so that led me to
ImageEnViewCompare.ZoomFilter := rfFastLinear;
My program with moire had rfNone.

I then checked your zoom filter demo program. rfNone is very bad for moire.
rfWICNearestNeighbor
rfWICCubic
rfWICLinear
These are all poor for moire. I wonder if that is worth documenting in the help file?


J.R.
3   L A T E S T    R E P L I E S    (Newest First)
xequte Posted - Oct 24 2021 : 22:50:25
Thanks JR, I will improve the documentation for TResampleFilter for the next release.

Nigel
Xequte Software
www.imageen.com
jrpcguru Posted - Oct 19 2021 : 22:05:01

attach/jrpcguru/202110192246_Moire pattern - Copy.JPG

J.R.
xequte Posted - Oct 19 2021 : 20:38:23
Hi JR

Can you post or email me the sample image?

Nigel
Xequte Software
www.imageen.com