libvips: an image processing library

libvips is a demand-driven, horizontally threaded image processing library. Compared to similar libraries, libvips runs quickly and uses little memory.


Important Notes

Interactive job
Interactive jobs should be used for debugging, graphics, or applications that cannot be run as batch jobs.

Allocate an interactive session and run the program. Sample session:

[user@biowulf]$ sinteractive --mem=12g -c8 --grep=lscratch:20
[user@cig 3335 ~]$ module load libvips
[+] Loading singularity  4.0.1  on cn1107
[+] Loading libvips  8.15.1
[user@cn3335 ~]$ vips -h 
  vips [OPTION?] [ACTION] [OPTIONS] [PARAMETERS] - VIPS driver program

   OPER - execute vips operation OPER

Help Options:
  -h, --help                     Show help options

Application Options:
  -t, --targets                  print vector targets
  -l, --list=BASE-NAME           list objects
  -p, --plugin=PLUGIN            load PLUGIN
  -v, --version                  print version
  -c, --completion=BASE-NAME     print completions
  --vips-concurrency=N           evaluate with N concurrent threads
  --vips-progress                show progress feedback
  --vips-leak                    leak-check on exit
  --vips-profile                 profile and dump timing on exit
  --vips-disc-threshold=N        images larger than N are decompressed to disc
  --vips-novector                disable vectorised versions of operations
  --vips-cache-max=N             cache at most N operations
  --vips-cache-max-memory=N      cache at most N bytes in memory
  --vips-cache-max-files=N       allow at most N open files
  --vips-cache-trace             trace operation cache
  --vips-cache-dump              dump operation cache on exit
  --vips-version                 print libvips version
  --vips-config                  print libvips config
  --vips-pipe-read-limit         read at most this many bytes from a pipe
[user@cn3335 ~]$ cp $LIBVIPS_DATA/* .
[user@cn3335 ~]$ ls

To rotate an image x.png by 90 degrees, type:
[user@cn3335 ~]$ vips rot x.png y.png d90
The output is image y.png:

[user@cn3335 ~]$ exit user@biowulf]$