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Default branch: MAIN
Current tag: pkgsrc-2012Q4

Revision 1.15 / (download) - annotate - [select for diffs], Sun Dec 9 00:11:42 2012 UTC (6 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2012Q4-base, pkgsrc-2012Q4
Changes since 1.14: +5 -9 lines
Diff to previous 1.14 (colored)

* Version 4.1  "Trouble In Paradise"

Released on December 8, 2012.

** Improvements

- All deprecated options since version 4.0 have been removed.

- A new primary seam-line generator, based on a Graph-Cut algorithm,
  has been implemented during GSoC 2011 by Mikoaj Leszczyski.  The
  old Nearest-Feature Transform remains the default.  The new
  algorithm is activated with "--primary-seam-generator=graph-cut".

- The difference image on which Enblend's seam-line optimization
  relies for color images uses a perceptual model by default (option
  "--image-difference"), yielding a true CIE76 "Delta E" with the
  (default) luminance and chrominance weights of 1.

- Parallelize CIECAM02 color conversion (option "--ciecam").  Speedups
  of up to 40% have been reported on the amd64 architecture.  The
  computationally expensive color-space conversion still slows down
  blending and fusing by some 25%.

- Enblend and Enfuse integrate seamlessly in color-managed workflow.
  Input images with color profiles automatically enable CIECAM
  blending and the output image is assigned the input images' color

- Enblend and Enfuse exploit a new feature in LittleCMS Version 2.x
  called "Unbounded CMM".  Thereby, the hue and saturation of extreme
  shadows and highlights can be preserved much longer before pure
  black or white are reached.  See:

- Assign different profiles to profile-free input images with option
  "--fallback-profile" instead of being tied to sRGB.

- A new gray-scale projector called "anti-value" helps when fusing
  with the intent of minimizing the noise in the output image.  When
  employing a lower exposure cutoff this even is the default

- Both Enblend and Enfuse stop right after saving all generated masks
  to files, if option "--save-masks" is given, but option "--output"
  is not.  This allows to splice tools that manipulate the masks and
  feed the masks back into Enblend and Enfuse with option
  "--load-masks".  When combining option "--output" and "--save-masks"
  Enblend and Enfuse write all masks and the final output image as

- Both Enblend and Enfuse can write their output JPEG files with
  arithmetic JPEG compression and TIFF files with JPEG compression, if
  the underlying JPEG and TIFF libraries support these compression

** Bug Fixes

- Enblend and Enfuse consistently warn if they are passed input images
  that alternate between with color profile and without.

- Grant SourceForge feature request ID 2991909 (OSX only).  Previous
  to that, Enblend, when launched from a terminal window with
  GPU-acceleration (option "--gpu"), started a second, non-responsive
  terminal window and when this new Enblend window tried to "steal"
  the focus, it displayed the OSX rotating "beach ball".  With the fix
  that all goes away.  Also the responsiveness of the screen improves,
  which means that the non-functional window also hogged GUI resources.

** New Commandline Options

- Option "--primary-seam-generator" controls the primary seam-line
  generation algorithm.

- Option "--image-difference" selects the difference image calculation
  algorithm and optionally assigns weights to the luminance and the
  chrominance part of the difference image.

- Short option "-c" now has a sibling called "--ciecam".  The long
  option also has a negated form: "--no-ciecam"; the short one has

- The option "--fallback-profile=PROFILE" allows users to pass their
  own profiles for image sets that come without ICC color profiles.
  Before the hard-coded profile was sRGB.

- The option "--exposure-cutoff" facilitates tailoring the exposure
  weight curve specifically to exclude underexposed (and probably
  noisy) or overexposed pixels from fusion.

- In Enblend option "--load-masks" disables all mask computations and
  loads the blend masks directly from the specified files.  This is
  the dual of Enblend's long-known option "--save-masks".

- The option "--layer-selector" overrides the standard default
  layer selector.

- In addition to the usual integral values option "--levels" takes the
  keyword "auto", which restores the default.  (The default is to
  automatically choose the maximum number of pyramid levels for each
  separate overlapping region.)

** Deprecated Features

- The option "--smooth-difference" will be eliminated in the next
  version of Enblend; it has not helped and moreover only put lipstick
  on the seamline-optimizer's objective function.

- The user-(re)sizable image-cache will not be available in later
  versions of Enblend and Enfuse.  We are not sure yet whether it will
  be replaced by an mmap-based solution or just tossed out.

** Developer Stuff

- XHTML validation does not rely on network access anymore.  This
  means all necessary DTDs must be available locally and all catalogs
  must be set up correctly to build the XHTML documentation.

- The option "--parameter" allows developers to pass arbitrary
  key-value pairs to Enblend and Enfuse.  The keys must match the
  regular expression [A-Za-z][A-Za-z0-9_-]*; the values can be almost
  any string.  No further checking or validation is performed.

  For more explanations on how to use parameters in the source code,
  see the block-comment within "namespace parameter" in file

** Package Maintainer Stuff

- Enblend and Enfuse now use LittleCMS version 2.x.

- Enblend and Enfuse no longer rely on their own versions of the Vigra
  imaging library.  Vigra version 1.8 or later is now required to

- Enblend no longer relies on libXMI.  (Enfuse never needed this

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