[vtkusers] Re: Why would my TIFF or BMP image look dark?

[Alex Lear]

Thanks, this was the correct solution.

Alex

----- Original Message ----- 
From: "Goodwin Lawlor" <goodwin.lawlor at ucd.ie>
To: <vtkusers at public.kitware.com>
Sent: Wednesday, September 01, 2004 2:55 PM
Subject: [vtkusers] Re: Why would my TIFF or BMP image look dark?


> Hi Alex,
>
> If its an 8 bit image...
>
> vtkImageMapper
>    mapper SetColorWindow 255
>    mapper SetColorLevel 127.5
>
> Basically, the ColorWindow should be the difference between the scalar min
> and max range and the ColorLevel should be the mid point
>
> hth
>
> Goodwin
>
> "Alex Lear" <alear at cns.montana.edu> wrote in message
> news:002d01c49053$5db4ecc0$e8b25a99 at x300...
>> I have used vtkTIFFReader (or vtkBMPReader) to read in an image and
>> displayed it with vtkMapper2D and vtkActor2D.  The image is a line 
>> drawing
>> with black background and white lines which show up good in photoshop and
>> gimp.  In the vtkRenderWindow the white lines show up dark grey and hard
> to
>> see.  I have messed with the actor properties and the little/big endian
>> settings in the reader.
>>
>> Does someone have some thoughts on why this might be happening or 
>> settings
>> to try?
>>
>> Thanks,
>> Alex
>>
>>
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>
>
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