imager 0.41.2 Minor release
===========================

-   Fixed bug in imsub: imsub had a nasty side-effect, that effectively
    redefined variables "x",y","z", and "cc" if they happened to exist
    in the current environment.

imager 0.41.1 Minor release
===========================

-   Prof. Brian Ripley contributed fixes for compiler errors on Solaris

imager 0.41 Major release
=========================

-   Functions based on **plyr** are gradually being phased out in favour
    of ones based on **purrr** and **dplyr**. **plyr** is no longer
    loaded by default, which solves some conflicts, but may break
    existing code! If that's the case just add
    `require(plyr)` somewhere.

-   new functions imeval and imchange. These create custom execution
    environments for functions, and simplify image pipelines: for
    example, `imeval(boats,~ xs*.)` is equivalent to:
    `(Xc(boats)/width(boats))*boats` and creates a fading effect.
    `imchange(boats,~ c==1,~ xs*.)` is the same thing but applied only
    to the first colour channel (R)

-   (experimental feature) quick-and-dirty interactive interfaces are
    now easy to program using the interact() function. Use it to explore
    filter parameters, interactive segmentation. For more sophisticated
    needs, use e.g. shiny.

-   (experimental feature) as.igraph methods for images and pixsets
    convert images into graph representations. Nodes are pixels, and
    edges are drawn between neighbouring pixels. On pixsets, this allows
    some interesting morphological operations, e.g. contour tracing. On
    images, it could be used for various graph-based image processing
    algorithms, like spectral graph clustering

-   new function "inpaint", which fills in missing parts of an image
    with a weighted avg. of the neighbours. Useful for
    salt-and-pepper-ish noise, e.g:
    `im <- boats   im[sample(nPix(im),1e4)] <- NA   inpaint(im,1) %>% imlist(im,.) %>%           setNames(c("before","after")) %>%            plot(layout="row")`

-   isoblur now has optional na.rm argument, and can ignore
    missing values.

-   new function: colorise, to fill in regions with a certain colour.
    Also comes with a formula interface, just like imeval. Ex: highlight
    central region in image
    `colorise(boats,~ sqrt(xc^2+yc^2) < 140,"blue",alpha=.2) %>% plot`
    see ?colorise for more.

-   new function: load.dir, to load all images in a directory

-   new function: Hough transforms for circles and lines are now
    available, see hough\_circle and hough\_line

-   most functions that take a colour argument now accept colour names,
    e.g.: `imfill(10,10,val="red")` or `autocrop(im,col="black")`

-   fixed problem with recent versions of ImageMagick that weren't
    detected properly

imager 0.40.2 Minor release
===========================

    * added crop.bbox for cropping image to the bounding box of a pixset
    * updated CImg: fixes issues with Intel C compiler and libtiff giving pop-up warnings on Windows 
    * threshold now has an "adjust" argument, to adjust the auto-thresholding
    * switched to C++11 

imager 0.40.1 Minor release
===========================

    * Updated CImg, imager should now compile on Solaris
    * Fixed memory access bug in px.flood

imager 0.40 Major release
=========================

-   added pixset class to represent sets of pixels in an image
    (implemented as binary images). A test on an image (e.g., im &gt; 0)
    results in a pixset object. Pixsets come with many convenience
    functions for plotting, manipulation, morphology, etc. They are
    described in the "pixsets" vignette.
-   improved reductions (parmax, parmin, etc.). Most are now implemented
    in C++ and some run in parallel using OpenMP. A median combine
    operation (parmedian) has been added.
-   added load.video, save.video, make.video functions. Loading and
    saving videos used to be a bit fragile and platform-dependent, it
    should now be easier and more robust (also slower, sorry). It's now
    possible to load individual frames from a video. *You still need
    ffmpeg*.
-   to load images from URLs imager now uses the *downloader* package,
    which is more robust than the previous solution
-   it's now possible to import images from the raster package and from
    the magick package.
-   unified RGB representations so that every function expects RGB
    values to be in the \[0-1\] range. There used to be a conflict in
    expectations here, with R expecting \[0-1\] and CImg \[0-255\].
    *This might break existing code* (albeit in minor ways).
-   new function implot, lets you draw on an image using R's
    base graphics.
-   improved interactive functions for grabbing image regions (grabRect,
    grabLine, etc.)
-   improved grayscale conversion
-   improved plotting. The default is now to have a constant aspect
    ratio that matches the aspect ratio of the image.
-   save.image now accepts a quality argument when saving JPEGs.
-   native support for TIFF, now supports non-integer values in TIFF
    files
-   rm.alpha removes alpha channel, flatten.alpha flattens it
-   imfill now accepts colour names, e.g. `imfill(10,10,val='red')`
-   improved documentation and examples
-   added functions for conversion to/from CIELAB

imager 0.31 Minor release
=========================

-   fixed inline C++ plugin, this time for OS X systems
-   added interpolation option to plot.cimg (to prevent systematic
    antialiasing when plotting small images)

imager 0.30 Major release.
==========================

-   new S3 class imlist improves support for image lists
-   enabled OpenMP. Many CImg primitives now run in parallel.
-   experimental support for CImg's DSL via imeval, patch\_summary.
-   improved as.raster,plot. Now support palettes via
    colourscale argument.
-   new interactive functions for selecting image
    regions (grabRect,grabPoint,grabLine)
-   new patchstat function for fast extraction of patch statistics
-   new patchmatch function
-   cleaned up the API, improved the documentation
-   fixed bug in inline C++ plugin, should now work on Windows.
-   improved configure script. FFTW3 is now optional (should be less
    confusing to OSX users)

imager 0.20. Major release
==========================

-   added a tutorial (vignette), which includes a worked-out example of
    multi-scale blob detection
-   new functions:
    -   iminfo gives you information on an image file (uses ImageMagick)
    -   load.example loads test images
    -   crop.borders (self-explanatory)
-   long computations can now be interrupted thanks to update in CImg
-   the array subset operator is now more intelligent: you do not have
    to specify flat dimensions, i.e. `imfill(10,10)[3,1]` does what
    you'd expect (i.e., the same as `imfill(10,10)[3,1,1,1]`)
-   improvements and bugs fixed in print.cimg, as.cimg, imresize, frame,
    plot.cimg, subim, as.raster, renorm
-   improved documentation and examples

imager 0.16. Bugfix + minor features
====================================

-   as.data.frame.cimg now has optional "wide" formats
-   load.image now uses readbitmap by default (should work better
    on Windows)
-   Made the test for ImageMagick more stringent, which fixes a bug in
    load.image on certain machines
-   Added new reductions which.parmax, which.parmin

imager 0.15: Substantial update
===============================

-   User-visible changes:
    -   the threshold function now supports auto-thresholding (based
        on k-means)
    -   new accessor functions: imrow, imcol
    -   new replacement functions: channel(im,1) &lt;-, R(im) &lt;-
        , etc.
    -   new reduction function: enorm (Euclidean norm of a list
        of images)
    -   improved as.cimg.function, pixel.grid
    -   subim is now called imsub for greater consistency (imsub still
        available as alias)
    -   improved documentation
-   Other:
    -   Reorganised R code into separate files for clarity

0.14 Minor update
=================

-   Build system now uses configure
-   Fixed paths in Makevars
-   Hopeful bugfix in load.image for Windows 7 users

0.13 Initial release on CRAN
============================
