Re: Better Image Scaling...
Re: Better Image Scaling...
- Subject: Re: Better Image Scaling...
- From: John Randolph <email@hidden>
- Date: Tue, 18 May 2004 12:03:20 -0700
Umm,
How about:
[[NSGraphicsContext currentContext]
setImageInterpolation:NSImageInterpolationHigh]
-jcr
On May 18, 2004, at 5:29 AM, Brent Gulanowski wrote:
On May 17, 2004, at 5:18 PM, Jerry LeVan wrote:
I have been wondering the same...
Have you tried /usr/bin/sips? ( sips -h will provide documentation)
Your AppleScript Books mentions "Image Events" :)
It seems like Python might offer a variety of scaling
algorithms in the Img package.
Jerry
On May 17, 2004, at 4:21 PM, email@hidden wrote:
In my app I scale images to make thumbnails using NSImageRep
drawInRect:.
When these thumbnails are reasonably large it is easy to see that the
results are fuzzy - much fuzzier than, for example, when Photoshop
does the
same scaling. Is there anything I can do about this? I'm not very
expert on
graphics but I get the idea that there is more than way to scale. m.
Not sure whom I'm addressing, but if AppKit hasn't been internally
revised to use it anyway, you might check out the vImage library:
http://developer.apple.com/documentation/Performance/Conceptual/vImage/
index.html
Perhaps direct use will let you set parameters... I haven't used it
yet.
--
Brent Gulanowski email@hidden
[demime 0.98b removed an attachment of type
application/pkcs7-signature which had a name of smime.p7s]
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John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
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