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scale_dcci2x

Arguments:

• _edge_threshold>=0,_exponent>0,_extend_1px={ 0=false | 1=true }

Description:

Double image size using directional cubic convolution interpolation,

as described in https://en.wikipedia.org/wiki/Directional_Cubic_Convolution_Interpolation.

Default values:

edge_threshold=1.15, exponent=5 and extend_1px=0.

Example of use: