Keeping proprietary tags in tiff file
Posted: 2012-10-03T12:14:07-07:00
Hi, everyone!
I'm trying to compress many tiff images to save some space. I'm using
Like many others before, I get the "unknown field with tag 34118 (0x8546) encountered. `TIFFReadDirectory' @ warning". I guess you must be tired of questions about it, but I promise this one is different. 
My problem is that convert strips the proprietary tag, but I need to keep them because they have information about the parameters used in the microscope when taking the image. Is there any way to do that?
Thanks!
Some data of these images:
I'm trying to compress many tiff images to save some space. I'm using
Code: Select all
convert input.tif -compress Zip output.tifMy problem is that convert strips the proprietary tag, but I need to keep them because they have information about the parameters used in the microscope when taking the image. Is there any way to do that?
Thanks!
Some data of these images:
Code: Select all
tiffinfo input.tif
TIFF Directory at offset 0x8 (8)
Subfile Type: (0 = 0x0)
Image Width: 1024 Image Length: 768
Resolution: 1, 1 (unitless)
Bits/Sample: 8
Compression Scheme: None
Photometric Interpretation: palette color (RGB from colormap)
Samples/Pixel: 1
Rows/Strip: (infinite)
Planar Configuration: single image plane
Color Map: (present)
Tag 34118: 0
0
0
1.464848e-00
...and many more linesCode: Select all
tiffinfo output.tif
TIFF Directory at offset 0x9784c (620620)
Image Width: 1024 Image Length: 768
Resolution: 1, 1 (unitless)
Bits/Sample: 8
Compression Scheme: AdobeDeflate
Photometric Interpretation: palette color (RGB from colormap)
FillOrder: msb-to-lsb
Orientation: row 0 top, col 0 lhs
Samples/Pixel: 1
Rows/Strip: 768
Planar Configuration: single image plane
Page Number: 0-1
Color Map: (present)
DocumentName: Q32_cm4989.tif.tmp
White Point: 0.3127-0.329
PrimaryChromaticities: 0.640000,0.330000,0.300000,0.600000,0.150000,0.060000