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imagick_unsharpmask

(PECL)

imagick_unsharpmask -- Sharpen image

说明

bool imagick_unsharpmask ( resource image, float radius, float sigma, float amount, float threshold )

警告

本函数暂无文档，仅有参数列表。

参数

image

Image handle

radius

Radius of the pixel neighborhood not counting the center pixel

sigma

Standard deviation of the Gaussian in pixels

amount

Percentage of the difference between the original and the blur image that is added back into the original

threshold

Threshold in pixels needed to apply the diffence amount

返回值

如果成功则返回 TRUE，失败则返回 FALSE。

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