Legacy ImageMagick Discussions Archive

Unfortunately, xubuntu ships with <IM7 so all convert at the moment. No previous problems with IM until update to xubuntu 18+ so not sure why the difference. Fortunately, the mogrify step is not essential, but worth noting in view of the error messages. TIFF* TIFF rw+ Tagged Image File Format ...

I think IM failed to process some of those .tiff files. Interestingly, I have set no restrictions in the policy map and turned off memory allocation in my bash script and '-alpha off' fails with convert and mogrify. mogrify -alpha off *.tiff or for f in `ls -v *.tiff`; do mogrify -alpha off $f; done ...

Thanks. That's what I read but was sceptical.

PI have just upgraded in xubuntu to Version: ImageMagick 6.9.7-4 Q16 x86_64 20170114 with Q16 installed as well. Processing involves large numbers of tiff and miff images - from 9mb - 80mb I have had memory allocation warnings and failure to read tiff headers, particularly with mogrify What are the ...

Thanks Fred, I have. I am using -color-matrix for applying channel multipliers to images from DSLRs without an astronomical filter mod. The user can add up to 5 matrices. It is a little intensive for developing a preview. And I may have asked the question too soon. Your scripts do precisely what's ...

Thanks. I was able to combine several commands as described in this thread. Largely, the do either / or nature of the work flow separates processes into individual commands, tied to user selectable options, the end result obtainable by several different pathways and processes.

With a little more experimenting, I find the colorbalance reference channel makes a difference image to image. Referenced to Blue the example image is nicely representative. Other images benefit from Red or Green.

This is the source 16bit tif file ~72MB

This image was processed by removing background tint and using Fred's autowhite colorbalance and curves scripts as follows. convert stack.tif -depth 16 -channel all -normalize +channel +normalize +compress -alpha off 2.miff ./autowhite 2.miff 3.miff ./colorbalance -c g -a 15 3.miff 4.miff ./curves ...

Thank you. Very informative to understanding how all this works. It occurred to me, after starting this thread, that the processes involved are buried in conditional statements which provide the option of performing the task or not. It would require a major overhaul to write the script based on mpr ...

Of course. Thanks. I have a bit more reading to do.

Thank you. A small adjustment to leave out 'histogram' and the gif extension, leaving only the filename... and happy to have the sequence begin as an animation... convert *.tif -set filename:f '%[t]' -define histogram:unique-colors=false histogram:$tmpdir/"%[filename:f].gif" for i in $tmpdir/*.gif ...

I have been reading up on miff mpr and mpc files in an attempt to make a fairly long and complicated bash script process more efficient. I'm not sure I'm on the right track. Presently, the script reads, potentially, dozens of large tif files and converts them to miff. An operation is performed on ...

Hi. Is there a way to write this and retain the original file name. I have tried various mogrify options without success. I can't find a way to use mogrify in this case and it seems necessary to resort to bash scripting convert *.tif -define histogram:unique-colors=false histogram:$((x++))_histogram ...