[Insight-users] Help: ResampleImageFilter

[Kun]

 Hi, all

     I am using the ResampleImageFilter to get an oblique slice from the 3D volume data. I use the   

    
     ResampleImageFilter->SetOutputOrigin(origin);
     ResampleImageFilter->SetOutputDirection(direction);

to set the direction of the desired slice, the 3*3 direction is the unit vector of x,y,z direction.

 
 Would this be right to get an accurate oblique slice?

Also, I feel a litter confused about the outputspacing. Should I set the spacing information of the input image as the outputspacing or use the spacing along the desired new x,y,z direction? 
for example, the desired x direction is [0.8;0.6;0], then the spacing[0] is set xspacing of the input image, or sqrt((0.8* xspacing)^2 + (0.6* yspacing)^2) ? 

Looking forward to your help.


Thanks

Kun
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