Gmagick::medianfilterimage

(PECL gmagick >= Unknown)

Gmagick::medianfilterimage — Applies a digital filter

说明

public void Gmagick::medianfilterimage ( float $radius )

Applies a digital filter that improves the quality of a noisy image. Each pixel is replaced by the median in a set of neighboring pixels as defined by radius.

参数

radius: The radius of the pixel neighborhood.

返回值

Gmagick object with median filter applied.

错误／异常

错误时抛出 GmagickException。

User Contributed Notes

jeff at arizonacoders dot com 13-Mar-2015 06:40


For people like me who like a quick reference, the filters are:



FILTER_UNDEFINED => UndefinedFilter

FILTER_POINT => PointFilter

FILTER_BOX => BoxFilter

FILTER_TRIANGLE => TriangleFilter

FILTER_HERMITE => HermiteFilter

FILTER_HANNING => HanningFilter

FILTER_HAMMING => HammingFilter

FILTER_BLACKMAN => BlackmanFilter

FILTER_GAUSSIAN => GaussianFilter

FILTER_QUADRATIC => QuadraticFilter

FILTER_CUBIC => CubicFilter

FILTER_CATROM => CatromFilter

FILTER_MITCHELL => MitchellFilter

FILTER_LANCZOS => LanczosFilter

FILTER_BESSEL => BesselFilter

FILTER_SINC => SincFilter



Ref: https://github.com/vitoc/gmagick/blob/master/gmagick_helpers.c