Yes - fslmaths will do all of these.
You choose an appropriate kernel (2D, 3D, cube, sphere, etc) and
then select the appropriate filtering operation (including dilation and
erosion). Opening and closing are done just by doing combinations
of dilation and erosion.
All the best,
Mark
On 18 Oct 2007, at 07:39, Defeng WANG wrote:
> Hi, FSLers,
>
> Is there any command in FSL that can perform morphology
> operations, such as dilation, erosion, opening, and closing?
>
> Thanks.
> Defeng
> ----- Original Message ----- From: "Kelly" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, October 18, 2007 1:05 AM
> Subject: [FSL] design file question
>
>
>> Hi FSLrs:
>>
>> I have a question about the correct set up for a design.mat and
>> design.con file.
>>
>> I am trying to set up a design that will compare two pre_post
>> conditions; one with a drug and one without. So, I have four groups:
>>
>> drug_pre
>> drug_post
>> placebo_pre
>> placebo_post
>>
>> Thus, I would like to compare - all within the same design so as
>> to collapse variances and possibly increase power:
>>
>> drug pre versus drug post
>> placebo pre versus placebo post
>> drug pre versus placebo pre
>> drug post versus placebo post
>>
>> What would my design files look like? I know what they should
>> look like individually for a paired test and for an unpaired
>> test...but this combination has thrown me for a loop. Help!
>>
>>
>> Also for an unequal number of subjects in drug and placebo group
>> do I need to reduce this so that there is an equal number of
>> subjects for both or can this design be done with unequal numbers?
>> Thanks so much.
>>
>> Kelly Brown
>> UCHSC Research Assistant
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