Re: Fastest high-quality thumbnail display
Re: Fastest high-quality thumbnail display
- Subject: Re: Fastest high-quality thumbnail display
- From: Scott Anguish <email@hidden>
- Date: Sat, 30 Jul 2011 02:46:58 -0400
If you want to display many thumbnails (or images in general) why not use the ImageKit?
It’s what it was designed for. Check out IK* files.
“The IKImageBrowserView class is a view for displaying and browsing a large amount of images and movies efficiently.”
On Jul 25, 2011, at 3:04 PM, James Merkel wrote:
> What is the fastest way to generate and display a thumbnail from a digital camera file?
> In the past I used NSImage -- however the quality (with JPEG files) leaves something to be desired. Now I am using CIImage with Lanczos scale transform -- quality is very good but it is slow (particularly with raw files).
>
> Should I be using the thumbnail capability of Image I/O? Will it have as good a quality as CIImage, but be faster?
>
> I am comparing the speed of my app (running in Xcode) with the speed of Preview. Preview is much faster ( 2x or 3X). I wonder what they are doing.
>
> Of course the fastest way to display a thumbnail is to use the thumbnail in the file (assuming there is one). But that's the problem, there may not be a thumbnail in the file, in which case you need to create one yourself.
>
> Thanks for any help,
>
> Jim Merkel
>
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