NAME

       enblend - combine images using a multiresolution spline

SYNOPSIS

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

DESCRIPTION

       Blend INPUT images into a single IMAGE.

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

   Common options:
       -V, --version
              output version information and exit

       -a     pre-assemble non-overlapping images

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

       -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

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

       -x     checkpoint partial results

       --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

       --layer-selector=ALGORITHM
              set  the layer selector ALGORITHM; default: "all-layers"; available algorithms are:
              "all-layers": select all layers in all images;  "first-layer":  select  only  first
              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

   Extended options:
       -b BLOCKSIZE
              image cache BLOCKSIZE in kilobytes; default: 2048KB

       -c, --ciecam
              use CIECAM02 to blend colors; disable with "--no-ciecam"

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

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

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

       --gpu  use graphics card to accelerate seam-line optimization

       -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

       -m CACHESIZE
              set image CACHESIZE in megabytes; default: 1024MB

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

       --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

       --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

       --smooth-difference=RADIUS
              (deprecated) smooth the difference image prior to  seam-line  optimization  with  a
              Gaussian blur of RADIUS; default: 0 pixels

       --optimize
              turn on mask optimization; this is the default

       --no-optimize
              turn off mask optimization

       --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

       --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"

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

AUTHOR

       Written by Andrew Mihal and others.

REPORTING BUGS

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

COPYRIGHT

       Copyright ©  2004-2012  Andrew  Mihal.   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.

SEE ALSO

       The full documentation for enblend is maintained as a Texinfo manual.   If  the  info  and
       enblend programs are properly installed at your site, the command

              info enblend

       should give you access to the complete manual.