[Fwd: Re: [Insight-users] pixelType and grayscale]

[Luis Ibanez]

Hi Romain,

You don't need a caster at the output of a rescale intensity filter.

Simply declare the rescale intensity filter to have the pixel type
that you want on the output image.

It is likely that your images have pixel values close to 1 and
look to dark when viewed in the dynamic range of 0-255.

You may want to use the ImageViewer that is available in


     InsightApplications/ImageViewer

This simple viewer will take into account pixel spacing and will
normalize the dynamic range of the image for display.


BTW:
You should avoid using BMP as a format for medical images.



   Regards,


      Luis


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Romain Lebel wrote:
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> I save Them as bmp
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> when i visualize them they are in greyscale but in the file format they 
> are in rgb not in 8 bits
> i vizualize them with windows or image J
> 
> i use the cast filter on a resample filter output
> the input of the writer is the caster ouput
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> Luis Ibanez a écrit :
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>>
>> Hi Romain,
>>
>>
>> Using unsigned char for pixel type should be enough.
>>
>>
>> * What are you using for visualizing your images ?
>>
>> * What file format are you using ?
>>
>> * What do you observe in your images after saving them ?
>>      are they black ?
>>      are they binary ?
>>      are they noisy ?
>>
>>
>>
>> Please provide more information.
>>
>>
>>    Thanks
>>
>>
>>      Luis
>>
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>>
>> -------------------
>> Romain Lebel wrote:
>>
>>> Hi every one!
>>>
>>> I can't get my images to be grascale when i save them
>>> I'm using unsigned char as pixel type
>>> What else should i do to get 8bits grayscale image saved ?
>>>
>>
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