Hi Jörg

can you rescale them yourself to distribute the values more widely between 0-255 then try giving that as input to recon-all?

thanks Bruce On Mon, 2 Apr 2012, Jörg Pfannmöller wrote:

Hello @all,

I want to segment anatomical data recorded from an experiemental sequence. This sequence creates pictures with contrasts in a rather narrow range around two hundred if projected into an 8bit grayscale. Freesurfer fails to segment those data. However, if I rescale the brightness in tkmedit the pictures have an excellent quality. Can somebody tell me how to correct the grayscale histogram?

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