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Imagick::setColorspace

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Imagick::setColorspace — Set colorspace

설명

bool Imagick::setColorspace ( int $COLORSPACE )

Sets the global colorspace value for the object. 이 메쏘드는 Imagick을 ImageMagick 6.5.7 이상으로 컴파일 했을 때만 사용할 수 있습니다.

인수

COLORSPACE: One of the COLORSPACE constants

반환값

성공시에 TRUE를 반환합니다.

오류/예외

오류시에 ImagickException이 발생합니다.

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User Contributed Notes 2 notes

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simonjjarrett at gmail dot com ¶

4 years ago


This method has to be called BEFORE any files are loaded into the Imagick object.

By default, Imagick will incorrectly read CMYK PDFs - it will read each channel as a greyscale page resulting in 4 times the number of pages. By specifying the desired colorspace (usually SRGB) before reading the file, GhostScript will automatically convert it.

<?php
$im = new Imagick();

// set the sampling resolution
$im->setResolution(200,200);

// set the desired format
$im->SetColorspace(Imagick::COLORSPACE_SRGB);

$im->readimage($file['tmp_name']);
?>

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-2

T ¶

9 years ago


Right now this function doesn't appear to do anything, ref: http://stackoverflow.com/q/10739822/2685496



As mentioned in the answer, modulateImage works fine as a replacement for converting to gray scale.



<?php



$image = new Imagick("input.jpg");



$image->modulateImage(100, 0, 100);



$image->writeImage("output.jpg");



$image->clear();



?>

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