Thanks. I overlooked the aux adustment for some reason. The environment variable would be nice because my contrasts are off for every participant, to varying extents. I suspect that the display contrast and brightness do not impact the segmentation, etc. Although, I would like to confirm this.
brian ----- Original Message ----- From: "Evelina Busa" <[EMAIL PROTECTED]> To: "freesurfer" <[EMAIL PROTECTED]> Sent: Tuesday, August 13, 2002 9:39 AM Subject: Re: contrast and brightness > > Hi Brian > > The tkmedit View--> Configure Brightness Contrast option allows you to > configure the main and/or aux volume(s) to your liking. I suppose you > could set an environment variable once you determine to which degree you > want the aux volume brightness reduced -- assuming this would be the same > for all the subjects in your study. Would this be the case, necessarily? > > > On Tue, 13 Aug 2002, Brian C. Schweinsburg wrote: > > > Hi Folks, > > > > When I convert and load images (from gelx, analyze, or brik format), the contrast and brightness are way off. In some cases the entire brain looks bright white. This creates a problem for segmentation edits because when I adjust the contrast for the auxiliary image (mri/orig) the main volume (segmentation) is adjusted, and actually disappears. What could be causing my images to be loaded with poor contrast/brightness? Is it a scaling problem? Is there a way to automatically adjust for this, say, using an environment variable? > > > > thanks for any help. > > > > brian > > > > > > > > ************************ > > Brian C. Schweinsburg > > UCSD > > Phone: 858.642.3736 > > Fax: 858.552.7432 > > > > > > -- > Evelina > >
