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Floating point pixel data / image handling confusion
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Floating point pixel data / image handling confusion


  • Subject: Floating point pixel data / image handling confusion
  • From: Felix Ulber <email@hidden>
  • Date: Mon, 10 Nov 2008 13:53:47 +0100

Hi Folks,

I am working on an Cocoa Application whose main purpose is to display
some stuff in OpenGL.

In conjunction with that I need to be able to read in floating point
images (most likely from an exr file) and resize them. Unfortunately,
with NSImage and NSBitmapImage it seems I can get only 32 bpp/8bit per
channel bitmap data (as the example in the cocoa drawing guide).

So I did some research and stumbled upon things like Image I/O, Core
Image and vImage. But I have tom admit have absolutely no clue what to
use when and how.

Can someone probably give me a hint into the right direction? I am
fairly new to OSX development, sometimes kind of confused about all
these frameworks and maybe just not seeing the obvious.

Thanx

Felix

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