16-bit raw images - how to preserve absolute value?

Posted by robert atwood on Apr 08, 2010; 10:21am
URL: http://imagej.273.s1.nabble.com/16-bit-raw-images-how-to-preserve-absolute-value-tp3688645.html

Hi;
I've been using ImageJ to prepare data files for some of my own
routines, because I can create shapes interactively in the interface or
by macro. However, now when I try to load a file which is 16-bit raw
data, containing values that are only small integers (0,1,2,3) , then
change (for example ) areas of '0' to '1' using flood-fill, then save as
raw data, then import it again, I find that the values are rescaled such
that 1 becomes 256, 2 becomes 512, and 3 becomes 768  

How do I avoid this ? I need the values to remain exactly as I assign
them!

 Thanks
Robert

--
This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail.
Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd.
Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message.
Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom