Gmagick::medianfilterimage()

(PECL gmagick >= Unknown)

Applies a digital filter

说明

publicGmagick::medianfilterimage(float $radius): void

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。

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