cannot view the tiff tag name when adding in unix and viewing it in windows

Image-ExifTool - cannot view the tiff tag name when adding in unix and viewing it in windows

Posted on Mon Nov 6 19:21:37 2006 by ravi

hi I am using the following code to write the tif tag

perl exiftool.pl -Image_Modified=T mymerge.tif Name "Image::ExifTool::RELEASE" used only once: possible typo at exiftool.pl line 161. 1 image files updated

and when i view the tag by issuing the following command
perl exiftool.pl -u -D mymerge.tif. I get the following infomation

- ExifTool Version Number : 6.42 - File Name : mymerge.tif - File Size : 560 kB - File Modification Date/Time : 2006:11:06 11:12:43 - File Type : TIFF - MIME Type : image/tiff 256 Image Width : 416 257 Image Height : 300 258 Bits Per Sample : 8 8 8 259 Compression : Uncompressed 262 Photometric Interpretation : RGB 274 Orientation : Horizontal (normal) 277 Samples Per Pixel : 3 278 Rows Per Strip : 6 282 X Resolution : 100 283 Y Resolution : 100 284 Planar Configuration : Chunky 296 Resolution Unit : inches 65016 Image Modified : T 273 Strip Offsets : (Binary data 159 bytes, use -b option to extract) 279 Strip Byte Counts : (Binary data 124 bytes, use -b option to extract) 305 Software : IrfanView - Image Size : 416x300

Please note the tag 65016
I use the same file and view using my tiffdump.exe windows program and the result of that is as follows

mymerge.tif Motorola byte order IFD 1: Offset=0x8, Count=16 ImageWidth 256 Short 1 0 [0x1a00000] ImageLength 257 Short 1 0 [0x12c0000] BitsPerSample 258 Short 3 0xce Compression 259 Short 1 0 [0x10000] PhotoInter 262 Short 1 0 [0x20000] StripOffsets 273 Long 50 0xd4 Orientation 274 Short 1 0 [0x10000] SamplesPerPixel 277 Short 1 0 [0x30000] RowsPerStrip 278 Short 1 0 [0x60000] StripByteCounts 279 Long 50 0x19c XResolution 282 Rational 1 0x264 1677721600/16777216 YResolution 283 Rational 1 0x26c 1677721600/16777216 PlanarConf 284 Short 1 0 [0x10000] ResolutionUnit 296 Short 1 0 [0x20000] Software 305 Ascii 10 0x274 'IrfanView' <b>Custom 65016 Ascii 2 0x54000000 ''</b> IFD 2: Offset=0x27e, Count=15 ImageWidth 256 Short 1 0 [0xdc0000] ImageLength 257 Short 1 0 [0x12c0000] BitsPerSample 258 Short 3 0x338 Compression 259 Short 1 0 [0x10000] PhotoInter 262 Short 1 0 [0x20000] StripOffsets 273 Long 25 0x33e Orientation 274 Short 1 0 [0x10000] SamplesPerPixel 277 Short 1 0 [0x30000] RowsPerStrip 278 Short 1 0 [0xc0000] StripByteCounts 279 Long 25 0x3a2 XResolution 282 Rational 1 0x406 1677721600/16777216 YResolution 283 Rational 1 0x40e 1677721600/16777216 PlanarConf 284 Short 1 0 [0x10000] ResolutionUnit 296 Short 1 0 [0x20000] Software 305 Ascii 10 0x416 'IrfanView' 1 Images, 0 Errors

Please notice the tag 65016 and you will not see the T which was supposed to be in there. I would like to mention that this tif file is a merged file of two images.
When I just add the tif tag for an image which is not merged it works fine.
Also I noticed that If I add more than one character in the tag appears to be working. Could you please suggest if it is an issue with the tag data type. I am furnishing the details of the tags that appear when I add more than one character for the tag name.

mymerge4.tif Motorola byte order IFD 1: Offset=0x8, Count=16 ImageWidth 256 Short 1 0 [0x1a00000] ImageLength 257 Short 1 0 [0x12c0000] BitsPerSample 258 Short 3 0xce Compression 259 Short 1 0 [0x10000] PhotoInter 262 Short 1 0 [0x20000] StripOffsets 273 Long 50 0xd4 Orientation 274 Short 1 0 [0x10000] SamplesPerPixel 277 Short 1 0 [0x30000] RowsPerStrip 278 Short 1 0 [0x60000] StripByteCounts 279 Long 50 0x19c XResolution 282 Rational 1 0x264 1677721600/16777216 YResolution 283 Rational 1 0x26c 1677721600/16777216 PlanarConf 284 Short 1 0 [0x10000] ResolutionUnit 296 Short 1 0 [0x20000] Software 305 Ascii 10 0x274 'IrfanView' Custom 65016 Ascii 7 0x27e 'T34567' IFD 2: Offset=0x286, Count=15 ImageWidth 256 Short 1 0 [0xdc0000] ImageLength 257 Short 1 0 [0x12c0000] BitsPerSample 258 Short 3 0x340 Compression 259 Short 1 0 [0x10000] PhotoInter 262 Short 1 0 [0x20000] StripOffsets 273 Long 25 0x346 Orientation 274 Short 1 0 [0x10000] SamplesPerPixel 277 Short 1 0 [0x30000] RowsPerStrip 278 Short 1 0 [0xc0000] StripByteCounts 279 Long 25 0x3aa XResolution 282 Rational 1 0x40e 1677721600/16777216 YResolution 283 Rational 1 0x416 1677721600/16777216 PlanarConf 284 Short 1 0 [0x10000] ResolutionUnit 296 Short 1 0 [0x20000] Software 305 Ascii 10 0x41e 'IrfanView' 1 Images, 0 Errors

If you see the same tag it has the value in it.
I do not know what to infer from this any help is greatly appreciated
ravi

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