Module image_filters 

Image transformation filters and lookup table.

Port of agg_image_filters.h and agg_image_filters.cpp — filter shape functions and a weight lookup table used by image resampling span generators.

Structs

ImageFilterBessel

Bessel filter — radius 3.2383.

ImageFilterBicubic

Bicubic filter — radius 2.0, cubic B-spline.

ImageFilterBilinear

Bilinear filter — radius 1.0, linear interpolation.

ImageFilterBlackman

Blackman window filter — variable radius (minimum 2.0).

ImageFilterBlackman36

Blackman filter with radius 3.0.

ImageFilterBlackman64

Blackman filter with radius 4.0.

ImageFilterBlackman100

Blackman filter with radius 5.0.

ImageFilterBlackman144

Blackman filter with radius 6.0.

ImageFilterBlackman196

Blackman filter with radius 7.0.

ImageFilterBlackman256

Blackman filter with radius 8.0.

ImageFilterCatrom

Catmull-Rom spline filter — radius 2.0.

ImageFilterGaussian

Gaussian filter — radius 2.0.

ImageFilterHamming

Hamming window filter — radius 1.0.

ImageFilterHanning

Hanning window filter — radius 1.0.

ImageFilterHermite

Hermite filter — radius 1.0, cubic Hermite interpolation.

ImageFilterKaiser

Kaiser filter — radius 1.0, parameterized by b (default 6.33).

ImageFilterLanczos

Lanczos filter — variable radius (minimum 2.0).

ImageFilterLanczos36

Lanczos filter with radius 3.0.

ImageFilterLanczos64

Lanczos filter with radius 4.0.

ImageFilterLanczos100

Lanczos filter with radius 5.0.

ImageFilterLanczos144

Lanczos filter with radius 6.0.

ImageFilterLanczos196

Lanczos filter with radius 7.0.

ImageFilterLanczos256

Lanczos filter with radius 8.0.

ImageFilterLut

Image filter weight lookup table.

ImageFilterMitchell

Mitchell-Netravali filter — radius 2.0, parameterized by b and c.

ImageFilterQuadric

Quadric filter — radius 1.5, piecewise quadratic.

ImageFilterSinc

Sinc filter — variable radius (minimum 2.0).

ImageFilterSinc36

Sinc filter with radius 3.0.

ImageFilterSinc64

Sinc filter with radius 4.0.

ImageFilterSinc100

Sinc filter with radius 5.0.

ImageFilterSinc144

Sinc filter with radius 6.0.

ImageFilterSinc196

Sinc filter with radius 7.0.

ImageFilterSinc256

Sinc filter with radius 8.0.

ImageFilterSpline16

Spline16 filter — radius 2.0.

ImageFilterSpline36

Spline36 filter — radius 3.0.

Constants

IMAGE_FILTER_MASK

IMAGE_FILTER_SCALE

IMAGE_FILTER_SHIFT

IMAGE_SUBPIXEL_MASK

IMAGE_SUBPIXEL_SCALE

IMAGE_SUBPIXEL_SHIFT

Traits

ImageFilterFunction

Trait for image filter shape functions.