2020.02.10 16:05 "[Tiff] How to make tiff rotation faster", by V. Krishna Karthik

2020.02.10 17:15 "Re: [Tiff] How to make tiff rotation faster", by Bob Friesenhahn

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.

Your images are definitely on the large side. How much RAM does your computer have? Are you using 32-bit or 64-bit applications?

I doubt that the tiffcrop slowness has much to do with TIFF formatting. It likely has more to do with its internal image model, how much memory it decides to allocate (maybe 4 bytes per pixel, I am not sure), and the actual rotation algorithm used. If your system runs low on RAM and starts paging then the program will run much slower.

Bob
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Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
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