Imagick::optimizeImageLayers
Imagick::paintFloodfillImage
The Imagick class
PHP Manual

# Imagick::orderedPosterizeImage

(PECL imagick 2.2.2)

Imagick::orderedPosterizeImage — Performs an ordered dither

### 설명

bool Imagick::orderedPosterizeImage ( string `$threshold_map` [, int `$channel`= Imagick::CHANNEL_ALL ] )

Performs an ordered dither based on a number of pre-defined dithering threshold maps, but over multiple intensity levels, which can be different for different channels, according to the input arguments. 이 메쏘드는 Imagick을 ImageMagick 6.3.1 이상으로 컴파일 했을 때만 사용할 수 있습니다.

### 인수

`threshold_map`

  A string containing the name of the threshold dither map to use

`channel`

  Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to `Imagick::CHANNEL_ALL`. Refer to this list of channel constants.

### 반환값

성공시에 `TRUE`를 반환합니다.

### 오류/예외

오류시에 ImagickException이 발생합니다.

Imagick::optimizeImageLayers
Imagick::paintFloodfillImage
The Imagick class
PHP Manual