2020.02.10 16:05 "[Tiff] How to make tiff rotation faster", by V. Krishna Karthik
When compared to irfanview the rotation and saving is faster when compared to libtiff. I use tiffcrop to rotate and save tif.
Here are the tiff header of the original tif:
TIFF Directory at offset 0xafac5a (11512922)
Image Width: 28400 Image Length: 34750
Resolution: 1270, 1270 pixels/inch
Bits/Sample: 1
Compression Scheme: CCITT Group 4
Photometric Interpretation: min-is-white
Orientation: row 0 rhs, col 0 top
Samples/Pixel: 1
Rows/Strip: 118
Planar Configuration: single image plane
and the rotated by the properitery software.
TIFF Directory at offset 0xa667a2 (10905506)
Image Width: 34750 Image Length: 28400
Resolution: 1270, 1270 pixels/inch
Bits/Sample: 1
Compression Scheme: CCITT Group 4
Photometric Interpretation: min-is-white
Orientation: row 0 top, col 0 lhs
Samples/Pixel: 1
Rows/Strip: 2368
Planar Configuration: single image plane
When compared speed with this software for 42 images like this it takes only 3 min to complete. whereas libtiff tiffcrop takes 25 min to complete.
How to make it faster like change in the tiff_tag and image dimensions? I already used tiffset to change orientation. but the Image width and Length are not interchanged. So the proprietary program not applying its function.
Any help