AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

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domenico
October 15, 2004 05:14AM
Thank you for your answer
Now an other question:

If I have images with number stored in 16 bit short I should expect a grayscale from 0 to 65536 (2e+16); so why the grayscale range displayed is usually shorter (for example 0 8000) and different from an image to an other one? It could depend on the scanner image acquisition software, because afni by default copies exactly the input data files? And if it so, may be the image acquisition software arranges an array of consecutive graylevels in one graylevel, for example numbers from 0 to 8 are set 1, from 9 to 16 are set to 2 and so on, so at the end the gray scale derived is shorter than original one?

Thank you in advance for your answer
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Subject Author Posted

grayscale

domenico October 14, 2004 01:57PM

Re: grayscale

Rich Hammett October 14, 2004 04:21PM

Re: grayscale

domenico October 15, 2004 05:14AM

Re: grayscale

Rich Hammett October 15, 2004 02:21PM