Re: [Gdcm2] color DICOM image

[Mathieu M. <mat...@gm...>]

On Mon, Aug 24, 2009 at 9:42 AM, swam sweet<ch...@gm...> wrote:
> On Aug 19, 9:48 am, mathieu <mathieu.malate...@gmail.com> wrote:
>> On Aug 18, 10:29 am, sweet <chitt...@gmail.com> wrote:
>>
>> > Dear all,
>> > I would like to know the difference between the gray scale dicom image
>> > and color dicom Image.
>> > If anyone who has Knee's color dicom image ..pls share me...
>> > thanks for your sharing..
>>
>> grayscale can be either MONOCHROME1 or MONOCHROME2 for Photometric
>> Interpretation. You could simply duplicate 3 (three) time the same
>> grayscale value to fake an RGB image. Please refer to your favorite
>> DICOM implementation for more information.
>>
>> Please make sure that the particular SOP Instance you'll be creating
>> is still valid, from the top of my head the old MR Image Storage does
>> not allow RGB for instance.
>>
>> HTH
>> -Mathieu
> Hi Mathieu,
> As your advice I went and posted my problem in matlab discussion
> group.. but still no reply. As I am just the beginner in DICOM field,
> there are many things that I can't understand. My purpose is to study
> the difference between the header information of grayscale and color
> dicom image. But one difficult thing is that it is rare to find the
> color dicom image file of MRI especially Knee part. So,, I am trying
> to convert my grayscale image to color Image by using gray2ind() and
> ind2rgb() function in Matlab. But problem is that there is error when
> I use dicomwrite(I,map,filename),, here, I can't input any value for
> 'map' .
> Is there any advice you can give me regarding with my problem?
> Anyone can give me advice..
> thanks for your sharing..
> regards,

I am not sure I understand what you are trying to do, but here is a
piece of advice:

- subscribe to gdcm ML
- download gdcm binaries
- download gdcmData

You'll find more information for the above in the gdcm FAQ.

Then simply compare the output of gdcmdump in between all the
LEADTOOLS_*.dcm files, this is the same image stored in grayscale,
color, and multiple compression scheme.

HTH
-- 
Mathieu