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

References:

• Kirk Martinez, John Cupitt,
  VIPS ― a highly tuned image processing software architecture
  IEEE Intern. Conf. on Image Processing 2005/9/14

• libvips Github page
• libvips Home page

• Module Name: libvips (see the modules page for more information)
• Unusual environment variables set
  • LIBVIPS_HOME  installation directory
  • LIBVIPS_BIN       executable directory
  • LIBVIPS_DATA  sample data directory

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 
Usage:
  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
x.png

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]$