[Rtk-users] Parameters to show Volume 's Z offset

[Simon Rit]

Hi,
OffsetZ probably refers to the coordinate of the volume in the room
coordinate which we don't use in RTK. Everything is set in the tomography
coordinate during reconstruction. You can always change the coordinates of
your volume after if you want to put it in some other coordinate system.
Simon

On Mon, Jul 13, 2015 at 10:38 AM, Guangming Zang <
guangming.zang at kaust.edu.sa> wrote:

> problem fixed.
> because the scanned object is symmetric and i did not notice that i
>  should -Z axis in scanner to map Z in RTK
> thanks.
> but, i still do not know in RTK how to show the OffsetZ..   :(
>
> Guangming
>
>
> *Guangming Zang (Alex)*
> *King Abdullah University of Science and Technology(KAUST)*
> *University of Chinese Academy of Sciences(UCAS)*
>
>
>
>
> 2015-07-13 9:48 GMT+03:00 Guangming Zang <guangming.zang at kaust.edu.sa>:
>
>> Hi RTK comunity,
>> Besides the prameters like SID and SDD ,  from the geometry(.xteck) file
>> got from my scanner,  i also have object (volume) information like this:
>> VoxelsX=179 VoxelsY=163 VoxelsZ=127
>> VoxelSizeX=0.3751 VoxelSizeY=0.3751 VoxelSizeZ=0.3751
>> OffsetX=-0.5386 OffsetY=-2.9935 OffsetZ=-1.0744
>> The X,Y and  Z axis are identical to RTK's geometry , So i was really
>> wondering how to show the offsetZ in our RTK setting?? besides OffsetZ, i
>> can show all other parameters like:
>>
>> rtkfdk -p . -r sub_proj.mhd -o fdk.mha -g sub_geo.xml --newspacing
>> 0.127(detector spacing or pixel spaing)  --neworigin -0.5386,-2.9935
>> --spacing 0.3751,0.3751,0.3751   --dimension 179,163,127
>>
>> Also, i tried to change the SID,i.e., SID=SID-1.0744 or SID=SID+1.0744,
>> but it still a slight different visualization result from what we got from
>> scanner software.
>> So would you help me???
>>
>>
>> File attached is the geometry file  in case. Thanks in advance
>> Regards
>> Guangming
>>
>> *Guangming Zang (Alex)*
>> *King Abdullah University of Science and Technology(KAUST)*
>> *University of Chinese Academy of Sciences(UCAS)*
>>
>>
>>
>>
>
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