Imagick::sharpenImage
(No version information available, might be only in CVS)
Imagick::sharpenImage — Sharpens an image
설명
bool Imagick::sharpenImage
( float $radius
, float $sigma
[, int $channel
] )
Warning
This function is currently not documented; only the argument list is available.
Warning
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Sharpens an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, the radius should be larger than sigma. Use a radius of 0 and selects a suitable radius for you.
매개변수
- radius
-
- sigma
-
- channel
-
반환값
성공시에 TRUE를 반환합니다.