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Re: [css-images] Gamma errors in image downscaling

From: Rik Cabanier <cabanier@gmail.com>
Date: Mon, 10 Nov 2014 13:00:33 -0800
Message-ID: <CAGN7qDC-i-5C6RaM7oOXEfHfiJ7PUg+Y9dYWKp_YUWDiVfDG0g@mail.gmail.com>
To: Lea Verou <lea@verou.me>
Cc: Tavmjong Bah <tav.w3c@gmail.com>, www-style list <www-style@w3.org>
On Mon, Nov 10, 2014 at 12:39 PM, Lea Verou <lea@verou.me> wrote:

> On Nov 10, 2014, at 14:39, Rik Cabanier <cabanier@gmail.com> wrote:
>
> I wonder if this is big enough of a issue. The problem is only noticeable
> if there are sharp transitions in luminosity over a large area which is not
> that common in most images.
> Some searching on the internet just point to the article that you linked
> to.
>
>
> It’s not common in photographs, but is very common in scaling various
> patterns and other kinds of synthesized images. As I wrote in my original
> post, even before I saw the link I included, I had come across the issue
> many times. However, I never posted about it anywhere, as it didn't even
> cross my mind it could be fixed, I just assumed that's just how image
> scaling works. Perhaps that might explain why there were so few results in
> your search.
>

If you're creating patterns and other vector shapes, the solution is to
express them natively in either CSS or SVG.
Pixel scaling vector artwork is not something we should spend time fixing.
Received on Monday, 10 November 2014 21:01:01 UTC

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