Petr Gajdos
f0a3dbd60f
* Added "filter:sigma" expert setting defining the 'sigma' for the Gaussian
filter only. This is similar in action to 'blur' but only for Gaussians,
and does not modify the filters support, allowing you to set a very small
sigma, without the function 'missing' all pixels.
* Patch for DrawableRotation() and DrawableTranslation()
* The webp format requires the webpconv delegate program (experimental).
* Replaced "Robidoux" with Cubic 'Keys' filter that is near equivelent to
the previous sharped "Lanczos2D" filter. (C=0.31089212245300069)
This also is very similer to a Mitchell filter but specifically designed
for EWA use and is the new default filter for Distorting Images.
* Added new filter 'Lanczos2D' a 2-lobe Lanczos as defined by
Andreas Gustafsson in his thesis "Interactive Image Warping" (page 24)
http://www.gson.org/thesis/warping-thesis.pdf
* Added filter "Robidoux" which is a slightly sharpened version of the
"Lanczos2D" filter (blur=0.958033808) specifically designed to be less
'blurry' for horizontal and vertical lines in no-op distortions.
* Add support for "pattern:vertical2" and "pattern:horizontal2".
* Add support for "pattern:vertical3" and "pattern:horizontal3".
* Properly handle PSD layers with negative offsets.
* Added sqrt(2) bluring default for Gaussian Filter if used as
a Cylindrical EWA filter. This resulted removing the last aliasing
issue that was present in tests for Gaussian EWA resampling. Of course
it is still a very blury filter for default use in EWA.
* Adjusted Variable Mapping Blur Composition so user arguments actual
relate properly to the sigma of the blur for a maximum mapping value.
* Fix horizon anti-alising for output-scaled perspective distortions.
* 'Bessel' filter is now offically and more accuritally named 'Jinc'
however 'Bessel' while not visible as a filter option can still be used
OBS-URL: https://build.opensuse.org/package/show/graphics/ImageMagick?expand=0&rev=45