Search found 8 matches

by Missletoss
Sun Jan 12, 2014 9:01 pm
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

The Keep Ratio button does work. When I click it, it the image will stretch or not accordingly. Is that what you mean?

Wow! The test results are really interesting. It seems like there is a very wide range in terms of what programs will do.
by Missletoss
Sat Jan 11, 2014 11:57 pm
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

Just an FYI: After fiddling with various options, I followed one of your links to ImageMagick above, which seems to be the only program that somehow seems to have fixed the halo resizing problem internally (not sure how). I love xnconvert though and I don't like using the command prompt, so I'm hopi...
by Missletoss
Sat Jan 11, 2014 8:55 pm
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

Did you resize by pixels or percentage? Input: mouth1.png (2000×3000 px) Output: mouth2.png (526×790 px) By pixels. Systemax PaintTool SAI? Yes, that's what I'm using. Sorry I couldn't be any more help :-| We really need a solution. Even the official icon for XnView Classic has this effect: I reall...
by Missletoss
Sat Jan 11, 2014 9:36 am
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

Thanks! I may have to do that at some point if I can't find another work around. I'm using SAI unfortunately.
by Missletoss
Sat Jan 11, 2014 9:16 am
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

Yes, I use 1.60. Thank you for the links! Right now I'll use "replace" color which sort of changes the image but at least gets rid of some of the grey. I'd probably just hand paint the smaller .pngs, but I have over a hundred images like this that need to be resized. Thank you again! I appreciate yo...
by Missletoss
Sat Jan 11, 2014 7:08 am
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

And yes, it was a reduction in size. It might seem like I enlarged the .png but I think the forum automatically blows up the .pngs to whatever size fits the post.
by Missletoss
Sat Jan 11, 2014 7:06 am
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Re: Reducing Halo Effect in Rescaled/Resized Images

Sure, thank you for the quick reply. It's a bit hard to see, but these are a .png series of facial parts that will be layered over other images. (look towards the center of the .pngs) I reduced mouth1.png to mouth 2.png using Lanczos (and all the others had a similar result...the gray stuff around t...
by Missletoss
Sat Jan 11, 2014 5:59 am
Forum: XnConvert
Topic: Reducing Halo Effect in Rescaled/Resized Images
Replies: 14
Views: 3816

Reducing Halo Effect in Rescaled/Resized Images

Hi, I was wondering if there was a way to minimize or prevent halo effect from happening? When I reduce .pngs to a smaller size (approximately 1/3 of the original size) I get a greyish, jagged halo effect around some of the more jagged areas of the image. This happens for all the algorithms (I've tr...