16bit binary

[Benito Alarcon]

Dear all, in order to operate between 16bit images we would need to
get a binary image. The binary that we obtain in ImageJ is a 8bit. Is
it possible to get a 16bit binary which values were 0 and 65535?.
Sorry if this is an obvious question, I am new in this area. Thanks in advance  

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[Robert Lockwood]

You have another problem as Java doesn't support unsigned shorts if you
really need the value 65535 you need to use an int.  If you need a short
with all the bits set and you are not interpreting it the value is -32767,
but someone else will need to reply for an ImageJ method to do that.


On Mon, Mar 31, 2014 at 12:21 AM, Benito Alarcon <[hidden email]>wrote:

> Dear all, in order to operate between 16bit images we would need to get a
> binary image. The binary that we obtain in ImageJ is a 8bit. Is it possible
> to get a 16bit binary which values were 0 and 65535?. Sorry if this is an
> obvious question, I am new in this area. Thanks in advance
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>



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When I was 12 I thought I would live forever.
So far, so good.

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[Gabriel Landini]

 On Mon, Mar 31, 2014 at 12:21 AM, Benito Alarcon <[hidden email]>wrote:
> Dear all, in order to operate between 16bit images we would need to get a
> binary image. The binary that we obtain in ImageJ is a 8bit. Is it
> possible to get a 16bit binary which values were 0 and 65535?.

Yes you can. I am assuming that your image is background 0 and foreground 255.

Convert to 16bit
Multiply it by 65535.
Of course the multiplication overflows the max value held in a 16 bit image,
but it is clipped and you end up with background 0 and foreground 65535.

Regards

Gabriel

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