Re: Reading RGBA pixel values from image on disk
Re: Reading RGBA pixel values from image on disk
- Subject: Re: Reading RGBA pixel values from image on disk
- From: Quincey Morris <email@hidden>
- Date: Thu, 10 Mar 2011 09:13:54 -0800
On Mar 10, 2011, at 07:18, Leonardo wrote:
> But if I save the same image with Photoshop as TIF, I get an "alpha
> premultiplied" bitmap format and a bitsPerPixel = 24. But worst of all, all
> the alpha values are 1.0, while some of them is for sure 0.5. So I can't
> even calculate the original non multiplied RGB values.
Well, what's your evidence that Photoshop didn't save the file as RGB (rather than RGBA or ARGB), since bitsPerPixel==24 suggests that it did?
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