enblend - combine images using a multiresolution spline

       Written by Andrew Mihal, Christoph Spiel and others.

       Copyright © 2004-2009 Andrew Mihal.
       Copyright © 2009-2016 Christoph Spiel.

       License GPLv2+: GNU GPL version 2 or later <http://www.gnu.org/licenses/gpl.html>
       This  is  free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent
       permitted by law.

enblend 4.2                                         July 2024                                         ENBLEND(1)

       Blend INPUT images into a single IMAGE.

       INPUT... are image filenames or response filenames.  Response filenames start with an "@" character.

       OMP_NUM_THREADS
              The  OMP_NUM_THREADS  environment  variable  sets  the number of threads to use in OpenMP parallel
              regions.  If unset Enblend uses as many threads as there are CPUs.

       OMP_DYNAMIC
              The OMP_DYNAMIC environment variable controls dynamic adjustment of the number of threads  to  use
              in executing OpenMP parallel regions.

       enblend - combine images using a multiresolution spline

Commonoptions:-l, --levels=LEVELS
              limit  number  of  blending  LEVELS to use (1 to 29); negative number of LEVELS decreases maximum;
              "auto" restores the default automatic maximization

       -o, --output=FILE
              write output to FILE; default: "a.tif"

       -v, --verbose[=LEVEL]
              verbosely report progress; repeat to increase verbosity or directly set to LEVEL

       --compression=COMPRESSION
              set compression of output image to COMPRESSION, where COMPRESSION is:  "deflate",  "jpeg",  "lzw",
              "none",  "packbits",  for  TIFF  files and 0 to 100, or "jpeg", "jpeg-arith" for JPEG files, where
              "jpeg" and "jpeg-arith" accept a compression level

   Advancedoptions:--blend-colorspace=COLORSPACE
              force COLORSPACE for blending operations; Enblend uses "CIELUV" for images  with  ICC-profile  and
              "IDENTITY"  for  those without and also for all floating-point images; other available blend color
              spaces are "CIELAB" and "CIECAM"

       -c, --ciecam
              use CIECAM02 to blend colors; disable with "--no-ciecam"; note that this option will be  withdrawn
              in favor of "--blend-colorspace"

       -d, --depth=DEPTH
              set  the number of bits per channel of the output image, where DEPTH is "8", "16", "32", "r32", or
              "r64"

       -f WIDTHxHEIGHT[+xXOFFSET+yYOFFSET]
              manually set the size and position of the output image; useful for cropped and shifted input  TIFF
              images, such as those produced by Nona

       -g     associated-alpha hack for Gimp (before version 2) and Cinepaint

       -w, --wrap[=MODE]
              wrap  around  image  boundary, where MODE is "none", "horizontal", "vertical", or "both"; default:
              none; without argument the option selects horizontal wrapping

   Maskgenerationoptions:--coarse-mask[=FACTOR] shrink overlap regions by FACTOR to speedup mask
              generation; this is the default; if omitted FACTOR defaults to 8

       --fine-mask
              generate mask at full image resolution; use e.g.  if overlap regions are very narrow

       --optimize
              turn on mask optimization; this is the default; disable with "--no-optimize"

       --save-masks[=TEMPLATE]
              save generated masks in TEMPLATE; default: "mask-%n.tif";  conversion  chars:  "%i":  mask  index,
              "%n":  mask  number,  "%p":  full  path,  "%d":  dirname,  "%b":  basename,  "%f": filename, "%e":
              extension; lowercase characters refer to input images uppercase to the output image

       --load-masks[=TEMPLATE]
              use  existing  masks  in  TEMPLATE  instead  of  generating  them;  same  template  characters  as
              "--save-masks"; default: "mask-%n.tif"

       --visualize[=TEMPLATE] save results of optimizer in TEMPLATE; same template
              characters as "--save-masks"; default: "vis-%n.tif"

   Expertoptions:-a, --pre-assemble
              pre-assemble non-overlapping images; negate with "--no-pre-assemble"

       -x     checkpoint partial results

       --fallback-profile=PROFILE-FILE
              use the ICC profile from PROFILE-FILE instead of sRGB

       --layer-selector=ALGORITHM
              set  the  layer selector ALGORITHM; default: "all-layers"; available algorithms are: "all-layers":
              select all layers in any image; "first-layer": select  only  first  layer  in  each  (multi-)layer
              image;  "last-layer":  select only last layer in each (multi-)layer image; "largest-layer": select
              largest layer in each (multi-)layer image; "no-layer": do not select any layer from any image;

       --parameter=KEY1[=VALUE1][:KEY2[=VALUE2][:...]]
              set one or more KEY-VALUE pairs

   Expertmaskgenerationoptions:--primary-seam-generator=ALGORITHM
              use main seam finder ALGORITHM, where ALGORITHM  is  "nearest-feature-transform"  or  "graph-cut";
              default: "graph-cut"

       --image-difference=ALGORITHM[:LUMINANCE-WEIGHT[:CHROMINANCE-WEIGHT]]
              use  ALGORITHM  for calculation of the difference image, where ALGORITHM is "max-hue-luminance" or
              "delta-e"; LUMINANCE-WEIGHT and CHROMINANCE-WEIGHT define the  weights  of  lightness  and  color;
              default: delta-e:1:1

       --optimizer-weights=DISTANCE-WEIGHT[:MISMATCH-WEIGHT]
              set the optimizer's weigths for distance and mismatch; default: 8:1

       --mask-vectorize=LENGTH
              set LENGTH of single seam segment; append "%" for relative value; defaults: 4 for coarse masks and
              20 for fine masks

       --anneal=TAU[:DELTAE-MAX[:DELTAE-MIN[:K-MAX]]]
              set annealing parameters of optimizer strategy 1; defaults: 0.75:7000:5:32

       --dijkstra=RADIUS
              set search RADIUS of optimizer strategy 2; default: 25 pixels

   Informationoptions:-h, --help
              print this help message and exit

       -V, --version
              output version information and exit

       --show-globbing-algorithms
              show all globbing algorithms

       --show-image-formats
              show all recognized image formats and their filename extensions

       --show-signature
              show who compiled the binary when and on which machine

       --show-software-components
              show the software components with which Enblend was compiled

       Enblend accepts arguments to any option in uppercase as well as in lowercase letters.

       Report bugs at <https://bugs.launchpad.net/enblend>.

enblend [options] [--output=IMAGE] INPUT...