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Re: Speed up image display for large raw images?
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Re: Speed up image display for large raw images?


  • Subject: Re: Speed up image display for large raw images?
  • From: Jens Alfke <email@hidden>
  • Date: Wed, 15 Aug 2012 20:24:45 -0700

On Aug 14, 2012, at 9:58 PM, Marco S Hyman <email@hidden> wrote:

> The images are typically 25 MB Canon 7D raw image files that have
> been pre-alloc'ed and initWithContentsOfFile:

NSImage doesn't actually load the image pixels until it needs to. Merely initializing an instance won't do it.

That said, NSImage has changed a lot over time (especially its caching) and I'm not sure what the best way is to preload an image these days.

—Jens

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