Re: NSBitmapImageRep with floating point values
Re: NSBitmapImageRep with floating point values
- Subject: Re: NSBitmapImageRep with floating point values
- From: David Duncan <email@hidden>
- Date: Thu, 3 Feb 2011 14:37:01 -0800
On Feb 3, 2011, at 1:32 PM, Paul Morel wrote:
> in my application I would need to save an image where pixel intensities are floating point values. Apparently TIFF can support that.But I don't know I can do that in Objective-C. I saw that there is a bitmap format "NSFloatingPointSamplesBitmapFormat" that can be used. Does anybody knows how to use it? I tried to use a (float **) instead of (unsigned char **) but it doesn't work of course, because it is supposed to receive (unsigned char **)!
Did you try just allocating an appropriately sized buffer and typecasting to (unsigned char **)? The type cast doesn't change the data, just the compiler's interpretation of it (and since this is a pointer that won't affect the data itself in anyway).
--
David Duncan
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