2010.11.16 17:48 "[Tiff] unknown field with tag 317 (0x13d)
encountered.", by E. Rosten
Thread
2010.11.16 17:48 "[Tiff] unknown field with tag 317 (0x13d) encountered.", by E. Rosten
I'm trying to read a TIFF file, which seems to have the predictor set. I get the error message:
TIFFReadDirectory: Warning, std::istream: unknown field with tag 317 (0x13d) encountered.
and the TIFF appears to be quantized to a very small number of levels.
This is from my own software and I get very similar results from other software installed on the system. I have tried the latest version (3.9.4), with the following results from the configure script:
Libtiff is now configured for x86_64-unknown-linux-gnu
Installation directory: /usr/local
Documentation directory: ${prefix}/share/doc/tiff-3.9.4
C compiler: gcc -std=gnu99 -g -O2 -Wall -W
C++ compiler: g++ -g -O2
Enable runtime linker paths: no
Support Microsoft Document Imaging: yes
Support for internal codecs:
CCITT Group 3 & 4 algorithms: yes
Macintosh PackBits algorithm: yes
LZW algorithm: yes
ThunderScan 4-bit RLE algorithm: yes
NeXT 2-bit RLE algorithm: yes
LogLuv high dynamic range encoding: yes
Support for external codecs:
ZLIB support: yes
Pixar log-format algorithm: yes
JPEG support: yes
Old JPEG support: yes
ISO JBIG support: no
C++ support: yes
OpenGL support: yes
tiffdump gives:
Magic: 0x4949 <little-endian> Version: 0x2a
Directory 0: offset 470607 (0x72e4f) next 0 (0)
SubFileType (254) LONG (4)
1<0>
ImageWidth (256) LONG (4)
1<180>
ImageLength (257) LONG (4)
1<180>
BitsPerSample (258) SHORT
(3) 1<16>
Compression (259) SHORT (3)
1<1>
Photometric (262) SHORT (3) 1<1>
ImageDescription
(270) ASCII (2) 247<Acquired from Photometri ...>
StripOffsets (273) LONG (4)
9<8 7928 15848 23768 31688 39608 47528 55448 63368>
RowsPerStrip (278) LONG (4)
1<22>
StripByteCounts
(279) LONG (4) 9<7920 7920 7920 7920 7920 7920 7920 7920 1440>
XResolution (282) RATIONAL (5)
1<72>
YResolution (283) RATIONAL (5)
1<72>
ResolutionUnit (296)
SHORT (3) 1<2>
Software (305) ASCII (2) 14<MetaMorph 6.1\0>
DateTime (306) ASCII (2) 20<2010:11:16
13:12:36\0>
Predictor (317) SHORT (3)
1<1>
33628 (0x835c) LONG (4) 10037<0 1 1 1395 2 2298 3 1 4 65177 5 65185 6 65193 7 65202 8 0 9 255 10 0 11 128 ...>
I.e. it correctly identifies the field.
I have managed to convert the file to a readable format, using MATLAB, but
I'd like to be able to use libtiff. The original file and converted one is available here:
Base URL:
http://mi.eng.cam.ac.uk/~er258/
Image files:
t20f50005000.tif
good-t20f50005000.tif
If anyone is interested in what I am doing wrong, my code is available.
The TIFF reading part id on lines 233--254:
http://cvs.savannah.gnu.org/viewvc/*checkout*/libcvd/libcvd/pnm_src/tiff.cxx?revision=1.16&content-type=text%2Fplain
Also, does anyone recognise the 33628 field? I can't find anything useful
online.
Regards,
-Ed