Summary of important user-visible changes for image 2.2.0 (yyyy/mm/dd):
-------------------------------------------------------------------------

 ** The following functions are new:

      checkerboard
      cp2tform
      findbounds
      impixel
      imtransform
      maketform
      montage
      strel
      tformfwd
      tforminv
      ycbcr2rgb

 ** The following functions have been moved from the Octave Forge Image package
    to GNU Octave core:

      cmpermute
      cmunique
      iscolormap
      rgbplot

 ** The following functions have been deprecated in the previous release
    of the Image package and have now been removed:

      blkproc         bmpwrite          dilate        erode

 ** The following functions have been deprecated (see their help text
    for the recommended alternatives):

      imrotate_Fourier

 ** rgb2ycbcr was completely rewritten to accept images of other classes, and
    colormaps.  A new argument was implemented to convert the RGB values
    according to different standards.

 ** The use of non logical matrices to specify the neighborhood for the medfilt2
    function has been deprecated.  If using a vector to specify the size of the
    neighborhood, the elements are no longer swapped.

 ** For consistency with other functions that allow specification of padding
    values, the function padarray now accepts the string "zeros" as a valid
    option.

 ** The plot produced by `imhist' is correctly scaled on the X axis so that the
    colorbar corresponds to the actual intensity of the stems; the given
    colormarp is used on the colorbar for indexed images; and the stems no
    longer display the markers at their top. The Y axis is also adjusted in case
    of peaks with high values that prevent a good overview of the histogram.

 ** The function `rgbplot' accepts a style option which alows for a composite
    display of a colormap.

 ** The option to create poisson noise to an image has been added to `imnoise'.

 ** With the addition of the strel class, the following functions are now able
    to handle strel objects:

      imerode

 ** The functions `imerode' and `imdilate' no longer require that image and
    structuring element be of same class. They now perform faster for all black
    and white images, independently of their class, and always return an image
    of same class as the input image. The shape option has also been implemented.

 ** Non flat grayscale erosion can now be performed by creating an appropriate
    structuring element with `strel'.

 ** The shape option has been implemented for `imerode' and `imdilate'.

 ** With the increased performance in `imerode' and `imdilate', all other
    functions that use them, such `imopen' and `imclose', also get a performance
    boost for black and white images.

 ** The performance of `imresize()' has been greatly improved when using the
    nearest neighbor method for N or 1/N scale factors (e.g.: 2, 50, 1/4, 1/7).

 ** The imperspectivewarp, imremap, imresize, and imrotate functions will now
    accept any interpolation method from the interp2 function thus extending
    the available methods to "spline" and "pchip".  This in addition to the
    "bilinear" and "bicubic" methods (same as "linear" and "cubic" respectively)
    which are kept for matlab compatibility.  For the same reason, the
    "triangle" method (interpolation kernel) has also been added (which is the
    same as "linear" method).

 ** Bug fixes on the concavity, intermodes, maxlikelihood, and minimum methods
    of graythresh.

 ** The `bwdist' function will now consider any non zero value as object pixels,
    the class of the distance matrix has changed to single, and indexes an
    uint dependent on the matrix size.

 Summary of important user-visible changes for image 2.0.0 (2012/11/08):
-------------------------------------------------------------------------

 ** The following functions are new:

      analyze75info         imabsdiff         iptcheckconn
      analyze75read         imadd             iptcheckmap
      analyze75write        imbothat          iptchecknargin
      blockproc             imcrop            iptcheckstrs
      bwlabeln              imdivide          iptnum2ordinal
      getrangefromclass     imlincomb         iscolormap
      im2int16              immultiply        normxcorr2
      im2single             imsubtract        wavelength2rgb

 ** The following functions have been deprecated in previous releases
    of the image package and have now been removed:

      imginfo

 ** The function `deriche' has been removed.

 ** The complete set of functions to work with Analyze 7.5 files has been
    implemented. See `analyze75info', `analyze75read' and `analyze75write'.

 ** `graythresh' can optionally accept an histogram rather than an image.  This
    allows for preprocessing of the histogram previous to an automatic threshold
    selection.

 ** Otsu's method for automatic threshold selection (default for `graythresh')
    has been completely rewritten and should perform faster. Now, it can also
    return a second value representing the ``goodness'' of the computed
    threshold value (within class variance).

 ** Alternative algorithms for automatic threshold have been implemented in
    `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox 
    http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a
    GPL license). Currently, the following algorithms have been implemented
    (see graythresh for notes and references):

      concavity       MaxEntropy        minimum       Otsu
      intermeans      MaxLikelihood     MinError      percentile
      intermodes      mean              moments

 ** The following functions have been deprecated (see their help text
    for the recommended alternatives):

      blkproc         bmpwrite          dilate        erode

 ** With the new function `imbothat' the transform option of
    `imtophat' has been deprecated.

 ** The following functions have had been changed for bug fixes and/or
    improved matlab compatibility

      bwarea          imhist            im2uint8      isind
      bweuler         imnoise           im2uint16     mat2gray
      bwfill          conndef           isbw          rgb2gray
      cmpermute       im2bw             isgray
      cmunique        im2double         isrgb

 ** `bwarea' now supports all image classes and considers objects all non
    zero pixels (not all pixels higher than zero).

 ** `rgb2gray' now also supports images of the class single and performs a
    weighted conversion to keep the image luminance instead of a the mean
    through each color.

 ** `im2bw' now supports input images of the int16 class and deals better with
    RGB images since it uses `rgb2gray' internally (see changes to rgb2gray).
    Threshold is performed on all values greater than value instead of greater
    than or equal.

 ** `imhist' is much more compatible with matlab and among other changes,
    it now uses the whole range of the class for the histogram rather than
    the minimum and maximum of the input image and displays a colorbar under
    the histogram.

 ** `isbw' now defines a black-and-white image as a binary non-sparse
    matrix. This is compatible with matlab. To use the old behaviour,
    use the new option for the call "isbw (img, "non-logical").
    For backwards compatibility, if a non-logical matrix of 0 and 1 is
    used as input, `isbw' will still return true but a warning will be
    issued since this will deprecated later.

 ** `isgray' now also returns true for matrices of the int16 class.

 ** `isrgb' now returns false for logical matrix.

 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond
    the first. It can also accept mutiple tag values and IFDs simultaneously
    and return a matrix of the values found. Its documentation has been
    expanded (as well as an explanation of TIFF structure on the source)

 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been
    greatly changed. Among the changes, it will no longer swap the minimum and
    maximum options if the first is larger than the later. Instead, will return
    the image complement after truncation. Also, when the maximum and minimum
    values are equal, `mat2gray' will truncate all values between 0 and 1. See
    the help text (or source) for a detailed description of cautions.

 ** `bwfill' was fixed to always returns a logical matrix.

 ** `imnoise' has been expanded to accept images of differente classes instead
    of only double and single.

 ** The private function `__bwdist` has been renamed `__bwdist__`

 ** Package is now dependent on GNU Octave version 3.6.0 or later.

 ** Package is now dependent on the signal package version 1.2.0 or later.

 ** Package is no longer automatically loaded.


********************************************************************************
**                                                                            **
**  NEWS below this point were written after their releases for history       **
**  purposes and extracted from the Octave Forge general NEWS.  Previous to   **
**  the image package version 1.0.11, all Octave Forge packages would be      **
**  released at the same time.  Previous to the package version 1.0.0 there   **
**  were monolithic releases with no actual packages.  This means that some   **
**  releases actually had no changes in the image package itself or changes   **
**  were small compared to the whole Octave Forge project and so, not         **
**  mentioned on the NEWS file.  Inspection of the actual log in the          **
**  repository should be used if exact details are required.                  **
**                                                                            **
********************************************************************************

 Summary of important user-visible changes for image 1.0.15 (2011/09/21):
--------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.14 (2011/04/12):
--------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.13 (2010/05/22):
--------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.12 (2010/03/22):
--------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.11 (2010/03/05):
--------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.10 (2009/06/07):
--------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.9 (2009/05/08):
-------------------------------------------------------------------------

 ** The following functions are new:

      entropyfilt  ordfiltn     rangefilt    stdfilt

 ** The following functions have been removed as they are now part of
    Octave core:

      imread   imwrite

 Summary of important user-visible changes for image 1.0.8 (2008/08/31):
-------------------------------------------------------------------------

 ** Fix build issues with the last release.

 Summary of important user-visible changes for image 1.0.7 (2008/08/24):
-------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.6 (2008/04/29):
-------------------------------------------------------------------------

 ** The following functions are new:

      imcomplement  rgbplot

 ** Implemented support for bilateral filtering.

 ** Build fixes for new versions of ImageMagick.

 Summary of important user-visible changes for image 1.0.5 (2008/02/16):
-------------------------------------------------------------------------

 ** The following functions are new:

      imfilter  imsmooth

 Summary of important user-visible changes for image 1.0.4 (2007/12/12):
-------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.3 (2007/10/14):
-------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.2 (2007/07/26):
-------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.1 (2007/05/26):
-------------------------------------------------------------------------

 Summary of important user-visible changes for image 1.0.0 (2007/03/28):
-------------------------------------------------------------------------

 ** First non-monolithic release.

 ** The following functions are new:

      __bwarea            fspecial            impersepectivewap
      apply               graythresh          imremap
      bwarea              im2double           label2rgb
      bwperim             im2uint8            __magick_read__
      deriche             im2uint16

 ** Fixex for non 8bit images.

 ** Quantum sizes in imagemagick.

 ** Compatiability changes to imwrite, isgray and rgb2gray.

 ** imread, probe depth from bits rather than Red field, allows loading of gray
    scale images.

 ** Convert all functions to use texinfo help.

 Summary of important user-visible changes for image (Octave Forge 2006.07.09):
--------------------------------------------------------------------------------

 Summary of important user-visible changes for image (Octave Forge 2006.03.17):
--------------------------------------------------------------------------------

 Summary of important user-visible changes for image (Octave Forge 2006.01.28):
--------------------------------------------------------------------------------

 ** imread() now return the appropriate numeric class. Colour images are of size
    MxNx3, gray images MxN.

 Summary of important user-visible changes for image (Octave Forge 2005.06.13):
--------------------------------------------------------------------------------

 ** The following functions are new:

      bwarea      imresize

 Summary of important user-visible changes for image (Octave Forge 2004.11.16):
--------------------------------------------------------------------------------

   ** No important changes to the image package in this Octave Forge release.

 Summary of important user-visible changes for image (Octave Forge 2004.09.09):
--------------------------------------------------------------------------------

 ** The following functions are new:

      applylut      cmunique      houghtf       poly2mask     uintlut
      bestblk       col2im        im2col        qtdecomp
      blkproc       conndef       isrgb         qtgetblk
      bweuler       dilate        makelut       qtsetblk
      bwmorph       erode         nlfilter      roicolor
      cmpermute     graycomatrix  padarray      stretchlim

 ** Implemented initial support for int* types.

 Summary of important user-visible changes for image (Octave Forge 2004.07.07):
--------------------------------------------------------------------------------

 ** No important changes to the image package in this Octave Forge release.

 Summary of important user-visible changes for image (Octave Forge 2004.02.12):
--------------------------------------------------------------------------------

 ** `imread' now supports 16-bit grayscale images.

 Summary of important user-visible changes for image (Octave Forge 2003.06.02):
--------------------------------------------------------------------------------

 ** The following functions are new:

      rotate_scale

 Summary of important user-visible changes for image (Octave Forge 2003.02.22):
--------------------------------------------------------------------------------

 ** No important changes to the image package in this Octave Forge release.

 Summary of important user-visible changes for image (Octave Forge 2002.11.30):
--------------------------------------------------------------------------------

 ** The following functions are new:

      colfilt      imginfo      imrotate     imshear      imtranslate

 ** The `colorgradient' function now allow instantaneous transitions (weight 0)

 ** The `bwlabel' function has been implemented in C++ and may behave different.

 Summary of important user-visible changes for image (Octave Forge 2002.05.09):
--------------------------------------------------------------------------------

 Summary of important user-visible changes for image (Octave Forge 2002.04.20):
--------------------------------------------------------------------------------

 Summary of important user-visible changes for image (Octave Forge 2002.03.10):
--------------------------------------------------------------------------------

 Summary of important user-visible changes for image (Octave Forge 2001.11.02):
--------------------------------------------------------------------------------

 ** First release.