[vtkusers] 8 bit data volume rendering (in 'Medical' Sample)?

[Divya Rathore]

Can vtkVolumeReader read 8-bit raw images?

On Mon, Apr 20, 2009 at 11:34 AM, Divya Rathore <divyarathore at gmail.com>wrote:

> Thanks Jerome.
>
> If we look at the sample code (Medical1.cxx):
>
>   // The following reader is used to read a series of 2D slices (images)
>
>   // that compose the volume. The slice dimensions are set, and the
>   // pixel spacing. The data Endianness must also be specified. The reader
>
>   // usese the FilePrefix in combination with the slice number to construct
>   // filenames using the format FilePrefix.%d. (In this case the FilePrefix
>
>   // is the root name of the file: quarter.)
>   vtkVolume16Reader *v16 = vtkVolume16Reader::New();
>
>     v16->SetDataDimensions (64,64);
>
>     v16->SetImageRange (1,93);
>
>     v16->SetDataByteOrderToLittleEndian();
>
>     v16->SetFilePrefix (argv[1]);
>
>     v16->SetDataSpacing (3.2, 3.2, 1.5);
>
>
> It uses vtkVolume16Reader to read the 16 bit files. I would like to know
> the 8 bit counterpart of this class. If not, any other class that can read
> multiple 8 bit files in a similar manner.
>
> regards,
> D Rathore
>
>
> On Mon, Apr 20, 2009 at 12:55 AM, Jérôme <jerome.velut at gmail.com> wrote:
>
>> Hi,
>>
>> I used to write short VTK python scripts for processing high number of
>> files. In your case, it could be a simple loop on our files that, for each,
>> do
>> - Read
>> - Cast to unsigned char (vtkImageCast -> be careful of type conversion.
>> vtkImageShiftScale could be another solution)
>> - Write
>>
>> If I understood your problem...
>>
>> Best regards,
>>
>> Jerome
>>
>> 2009/4/19 Divya Rathore <divyarathore at gmail.com>
>>
>>> Hi All,
>>>
>>> I was using Medical sample with Visual C++.
>>> It takes 16 bit files in the format xxx.1, xxx.2, xxx.3 etc. All works to
>>> taste.
>>>
>>> The Problem - How can I supply it 8 bit files? I have around 800 files
>>> and converting them to 16 bit will double the data size - too huge for my
>>> graphics card.
>>>
>>> regards,
>>>
>>>
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>>
>
>
> --
> "The difference between school and life? In school, you're taught a lesson
> and then given a test. In life, you're given a test that teaches you a
> lesson."
>



-- 
"The difference between school and life? In school, you're taught a lesson
and then given a test. In life, you're given a test that teaches you a
lesson."
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