Accidentally sent this mail to just Kenneth, forwarding it to the
mailing list as well...
Michiel
Begin doorgestuurd bericht:
Van: Michiel Sikma <[EMAIL PROTECTED]>
Datum: 17 mei 2006 15:08:42 GMT+02:00
Aan: Kenneth Wimer <[EMAIL PROTECTED]>
Onderwerp: Antw.: [ubuntu-art] Re: ubuntu-art Digest, Vol 11, Issue 46
Op 17-mei-2006, om 14:49 heeft Kenneth Wimer het volgende geschreven:
On May 17, 2006, at 1:38 PM, Michiel Sikma wrote:
Op 17-mei-2006, om 12:52 heeft Kenneth Wimer het volgende
geschreven:
The problems I see with this whole thing is this:
A pic, when rendered from vector with a decent editor, anti-
aliases differently at different sizes. Every time the thing is
scaled you loose quality (unless you are just really, really
lucky). So, making bigger pics is easy but they are only loosely
related to other versions of the same pic (when it comes to the
anti-aliasing) and therefor not the best determiner as to the
quality of anti-aliasing.
That said, I'll still make bigger versions of my pics...but
let's not decide based on the bigger versions, but on the
smaller versions :-)
Bye,
Ken
As for the losing of quality: when you downscale any raster
image, you will lose information. That's true. However, since a
downscaled image is smaller than the original, you won't actually
SEE that you lose information. You will only see this if you
UPscale an image.
True. But, what we are aiming for here is knowing exactly which
pic has the best anti-aliasing, so any change in the information
in the images between versions leads us to make a decision based
on at least partially incorrect or unknown information.
Not if a sufficiently decent artist made it.
I managed to get the color dithering and anti-aliasing just right
for my entries. I can do it again for downscaled entries just as
easily. I think this shouldn't be a problem for the other artists
as well.
Also, I think that we should separate the cases of pre-scaling the
pics to the correct aspect ratio and scaling them up as Mark asked
in another mail. Perhaps this is leading to confusion.
So if you don't have normal-sized versions of your splash screen,
then that's okay; just don't post upscaled versions. That's not
necessary.
If I understood Mark correctly, he would like a bigger version of
the pic, in which the anti-aliasing can be seen at a larger size.
I misunderstood this at first and assumed I would have to export
larger versions but after a coffee and 5min thinking, I realized
that this is the incorrect way to do this. In order to show the
actual pics anti-aliasing at a larger size, I simply scaled the
entire image with the Gimp and set the interpolation to "none". I
think that I am on the right track here (see the attached pics).
Doesn't Opera support the scaling of pictures? You could just view
the page with that.
However, let's NOT necessarily decide on the smaller versions;
all my images are normal-sized versions that need to be
downscaled before they're used in any binary, and I don't think
we should downscale them for the sake of comparison.
I think that the artistic merits of the design itself should be
decided upon as one will view it in real life (not scaled) but the
technical issues as to how well the thing will actually look when
in use definitely need to be considered as well. Of course, one
oculd argue that unless we make screenshot of the thing in action,
there is no way to know 100% for certain how any pic will look
when in use due to the scaling unless someone can come up with the
scaling algorithm and/or a test program to display the usplash on
the fly.
Okay... I suggest that every artist makes both a normal version,
without additional scaling, and a "corrected" version of whatever
images they have proposed. I think that this would be best. You
could use the normally scaled image as reference to see which one
actually looks best, and the other once we've decided which is
going to be used.
In short: you really should provide normal-sized screens, both
for reasons of comparison and for compatibility with future
splash screens that might not be affected by squishing (maybe
when EFI becomes the new standard, for example...); if you don't
have any normal-sized screens, then don't worry about it.
Michiel
Due to the amount of work involved with redrawing all the pics
without the pre-scaling for the aspect ratio scaling later, I
won't unless someone asks specifically for this :-)
I keep layered and full-color versions of all my files in case we
ever have the need for it later. I think others should assume this
as well, just in case, although it's not really necessary now.
Michiel
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