[gate-users] Voxel Interfile reader

[Mutanga Theodore]

Thanks for replying
So how did you get comvert your data to unsigned integers ? I used medcon
but then gate tells me that the data read is half the size it calculates.
I then use signed integer the data is read ok but gate doesnt recognise
signed integer data type.
I was about to use my phantom as a plain ascii data and try again.

Cheers

Theo

> Good morning,
> I've faced also this kind ofproblem.
> In fact, Gate insn't able to read images that contain
> images in a format other than unsigned integers.
>
> But you have to simply modify the declaration of the
> table "buffer" within the code
> "GateGeometryVoxelInterfileReader.cc".
> For the moment, the bugger that read the data isn't
> able to receive data of type "float" (for example).
>
> Best regards,
> ziad
>
> --- Mutanga Theodore <muathe02 at student.umu.se> wrote:
>
>> Greetings,
>> I wish to find out if it is possible for the gate
>> interfile reader to read
>> images other than unsinged integers ? I have
>> kcreated a phantom from CT
>> and I used Xmedcon to convert that to interfile 3.3
>> but there is some
>> problems with the byte order.
>>
>> When I save it as unsigned integer (u8 format in
>> medcon) the gate reader
>> always fails with an error message that the image
>> data is twice smaller
>> than what was calculated from header. Also when dump
>> the pixle values to
>> screen I notice the supposedly unsigned u8 data
>> still have signs.
>>
>> ON the other hand if I save my data as int16 (
>> singned integer)  The gate
>> interfile reader reads it correctly but then I get
>> the error that singed
>> integer is an unrecognized keyword.
>>
>> I have my phantom in Analyze format perhaps someone
>> knows another program
>> that can rewrite my the data into the interfile 3.3
>> format.
>> The funny thing is when I convert the image using
>> xmedcom to a plain ascii
>> file, and dump the pixels to screen the values are
>> correct with no signs.
>>
>> I would like to hear from anyone with suggestions
>> maybe there is a way to
>> recompile GATE to be able to read even signed
>> integers.
>>
>> Cheers
>>
>> Theo
>>
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>
>
>
>
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