Imagick::thresholdImage
(No version information available, might be only in CVS)
Imagick::thresholdImage — Changes the value of individual pixels based on a threshold
설명
bool Imagick::thresholdImage
( float $threshold
[, 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.
Changes the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image.
매개변수
- threshold
-
- channel
-
반환값
성공시에 TRUE를 반환합니다.