[Insight-users] Reading TIFFs with external libraries

[Brian Eastwood]

Hi All,

I have started using ImageMagick for reading images into my application 
because it works for many tiff images that ITK's readers will not read.  
So, loading data into an ITK pipeline consists of reading the image with 
ImageMagick, copying the image data into a buffer, and sending that 
buffer to an ITK importer.  So, I'm not using an ITK ImageReader.

I have come across a problem, however, in which the ITK tiff libraries 
still appear in the image reading on certain projects.  This error only 
occurs when reading tiff images.  Is there any way around this?  It 
looks like I get a write access violation exception in memcpy.asm, 
called from the ITK tiff library.  A stack trace is:

     msvcr71d.dll!memcpy(unsigned char * dst=0x00a10050, unsigned char * 
src=0x00a0f080, unsigned long count=1552)  Line 171    Asm
     ImageTracker.exe!itk__TIFFmemcpy(void * d=0x00a10050, void * const 
s=0x00a0f080, long c=1552)  Line 272 + 0x11    C
 >    ImageTracker.exe!DumpModeEncode(tiff * tif=0x0009b240, unsigned 
char * pp=0x00a0f080, long cc=92718280, unsigned short s=45632)  Line 56 
+ 0x17    C
     ImageTracker.exe!TIFFStartStrip(tiff * tif=0x00a10050, unsigned 
long strip=458787)  Line 554 + 0x7    C
     ImageTracker.exe!TIFFSeek(tiff * tif=0x00000184, unsigned long 
row=28232436, unsigned short sample=0)  Line 69 + 0x7    C
     ImageTracker.exe!TIFFReadScanline(tiff * tif=0x0009b240, void * 
buf=0x0586c4c8, unsigned long row=0, unsigned short sample=0)  Line 101 
+ 0x13    C
     ImageTracker.exe!ReadTIFFImage(const _ImageInfo * 
image_info=0x009753c1, _ExceptionInfo * exception=0x026722b0)  Line 826 
+ 0xe    C
     ImageTracker.exe!ReadImage(const _ImageInfo * 
image_info=0x00a10050, _ExceptionInfo * exception=0x00a0f080)  Line 443 
+ 0xc    C

The first Insight code is tif_dumpmode.c (DumpModeEncode); up until that 
point, the code is ImageMagick.  Any ideas?

Thanks,
Brian

-- 
________________________________________
                      < brian eastwood >
          < beastwoo at cs . unc . edu >
       < beastwoo at email . unc . edu >
     < http://www.cs.unc.edu/~beastwoo >
                    < 919 . 962 . 1761 >