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IDProjectCategoryView StatusDate SubmittedLast Update
0005970ITKpublic2007-10-26 16:082007-10-26 16:11
ReporterBill Lorensen 
Assigned ToBill Lorensen 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionfixed 
PlatformAllOSAllOS VersionAll
Product Version 
Target VersionFixed in Version 
Summary0005970: TIFF does not read 48bit images
Descriptionhi,

we have found a problem in 48 bit tiff image loading
we have used this workaround in TIFFImageIO::EvaluateImageAt( void* out, void* in )

...
    case TIFFImageIO::RGB_:
      if(m_ComponentType == USHORT)
        {
        unsigned short *image_us = (unsigned short*)out;
        unsigned short *source_us = (unsigned short*)in;

        red = *(source_us);
        green = *(source_us+1);
        blue = *(source_us+2);
        *(image_us) = red;
        *(image_us+1) = green;
        *(image_us+2) = blue;
        if ( m_InternalImage->SamplesPerPixel == 4 )
            {
            alpha = *(source_us+3);
            *(image_us+3) = 65535-alpha;
            }
        }
      else
        {
        red = *(source);
        green = *(source+1);
        blue = *(source+2);
        *(image) = red;
        *(image+1) = green;
        *(image+2) = blue;
        if ( m_InternalImage->SamplesPerPixel == 4 )
            {
            alpha = *(source+3);
            *(image+3) = 255-alpha;
            }
        }
      increment = m_InternalImage->SamplesPerPixel;
      break;
...

best regards,
Mazzetto Manuel, Rizzi Davide


Steps To ReproduceUser supplied a sample file that contained 48 bits per pixel. Ran with itkTIFFImageIOTest. Resulting image was garbage.
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  Notes
(0009575)
Bill Lorensen (developer)
2007-10-26 16:11

 Applied user patch and the 48 bit image is now read correctly. Added a sample image and an additional test. Modified itkTIFFImageIOTest to read 48 bit rgb pixels.

 Issue History
Date Modified Username Field Change
2007-10-26 16:08 Bill Lorensen New Issue
2007-10-26 16:08 Bill Lorensen Status new => assigned
2007-10-26 16:08 Bill Lorensen Assigned To => Bill Lorensen
2007-10-26 16:09 Bill Lorensen Status assigned => confirmed
2007-10-26 16:09 Bill Lorensen Steps to Reproduce Updated
2007-10-26 16:11 Bill Lorensen Note Added: 0009575
2007-10-26 16:11 Bill Lorensen Status confirmed => closed
2007-10-26 16:11 Bill Lorensen Resolution open => fixed

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