filters interface
border interpolation
Filters border interpolation
filter kernel anchor
filter : line accumulator
column accumulator
License changed to LGPL
column accumulator
Add LGPL-3 license text
column accumulator3.
Merge branch 'image_filters' of github.com:RaphaelJ/friday into image_filters
Non-separable filters
filtering optimisation
box and separable filters are now two distinct types
Sobel filters and 1-foldable separable filters
box filters : static argument transformation
FilterFold1 box filter implementation
Separable Scharr filter
revert accidental test/ removal
Filters comments