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Diffstat (limited to '')
| -rw-r--r-- | info/blueshift.texinfo | 13 | ||||
| -rw-r--r-- | src/interpolation.py | 19 |
2 files changed, 31 insertions, 1 deletions
diff --git a/info/blueshift.texinfo b/info/blueshift.texinfo index 8433a6b..ac2ab8c 100644 --- a/info/blueshift.texinfo +++ b/info/blueshift.texinfo @@ -1537,7 +1537,8 @@ by invoking them. @section Interpolation ICC profiles and curves that have beens turned -into functions with @code{functionise} have lower +into functions with @code{functionise}, or curves +read from the current adjustments, have lower input resolution that the input they receive; to compensate for this, nearest-neighbour interpolation is used. If you want to better @@ -1574,6 +1575,16 @@ is the same for the original curves and the scaled up curves. It is recommended to use the order: red, green and blue. +However, often these lookup tables are +oftern turned in to functions. To interpolate +a function, you can use the function +@code{interpolate_function}, it takes +two arguments: the function that applies +adjustments from a lookup table, and +a function that interpolates a lookup +table trio. It returns a function that +applies the interpolated lookup table. + @node Configuration examples diff --git a/src/interpolation.py b/src/interpolation.py index f5acba3..9039c11 100644 --- a/src/interpolation.py +++ b/src/interpolation.py @@ -17,6 +17,7 @@ # This module contains interpolation functions. +from aux import * from curve import * @@ -188,3 +189,21 @@ def eliminate_halos(r, g, b, R, G, B): # and replace the local partition with the linear interpolation. large[X1 : X2 + 1] = linear[ci][X1 : X2 + 1] + +def interpolate_function(function, interpolator): + ''' + Interpolate a function that applies adjustments from a lookup table + + @param function:()→void The function that applies the adjustments + @param interpolator:(list<float>{3})?→[list<float>{3}] Function that interpolates lookup tables + @return :()→void `function` interpolated + ''' + if interpolator is None: + return function + stored = store() + start_over() + function() + rc = functionise(interpolator(*store())) + restore(stored) + return rc + |