Fwd: difference between tiff types

[Daniel James White]

Thanks Wayne!!!

Now i learned something!
RGB is really RGBA !

Dan



Begin forwarded message:

> From: "Rasband, Wayne (NIH/NIMH) [E]" <[hidden email]>
> Date: October 5, 2010 7:17:45 PM GMT+02:00
> To: Daniel James White <[hidden email]>
> Subject: Re: difference between tiff types
>
>> three channels per pixel, each being 8 bit is 24 bit RGB.
>> 32 bit RGB is then .... umm not possible, as you can divide 32 by 3 and get an integer.
>> I think thats a typo???
>>
>> anyone explain that?
>
> Dear Daniel,
>
> Java uses ints (4 bytes) to store RGB images. The fourth byte is used to store 8-bits of alpha (transparency) data, which is currently mostly ignored by ImageJ.
>
> Thanks for taking the time to answer this user's questions.
>
> -wayne
>

Dr. Daniel James White BSc. (Hons.) PhD
Senior Microscopist / Image Visualisation, Processing and Analysis
Light Microscopy and Image Processing Facilities
Max Planck Institute of Molecular Cell Biology and Genetics
Pfotenhauerstrasse 108
01307 DRESDEN
Germany

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