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Imagick::setColorspace

(PECL imagick 3)

Imagick::setColorspaceEstablecer el espacio de color

Descripción

Imagick::setColorspace ( int $COLORSPACE ) : bool

Establece el valor del espacio de color global para el objeto. Este método está disponible si Imagick ha sido compilado con la versión 6.5.7 o superior de ImageMagick.

Parámetros

COLORSPACE

Una de las constantes COLORSPACE

Valores devueltos

Devuelve true en caso de éxito.

Errores/Excepciones

Lanza ImagickException en caso de error.

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User Contributed Notes 2 notes

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2
simonjjarrett at gmail dot com
11 months 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
6 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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