Re: NSImage Info
Re: NSImage Info
- Subject: Re: NSImage Info
- From: Heinrich Giesen <email@hidden>
- Date: Mon, 11 Jun 2007 20:36:08 +0200
hello,
On 11.06.2007, at 17:57, Barry wrote:
Hi
How do I access the original image data within NSImage ?
I need to determine whether the image was stored using L*a*b* units
or RGB &
if RGB whether sRGB, Apple RGB, Wide Gamut RGB et. al.
Then I need access to the raw data.
Where is the source code for NSImage so I can see what it does to
the raw
image ?
Thanks
First of all: forget NSImage! NSImage is one of the most
misunderstood classes.
The real job is done by NSImageRep; NSImage only collects what
NSImageRep did
and wraps it into an NSArray. But for what you want to do (color
separation ?)
NSImageRep is not well suited. I would try to use the IOKit which
gives you
more information and filters and ...
Another way could be to directly use the libraries libjpeg and
libpng. These
offer you full access to the raw imagedata, they are free, well
tested and
work an any computer platform and you "can see what is does to the
raw image".
Heinrich Giesen
--
Heinrich Giesen
email@hidden
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