Imagick::setImageType

(PECL imagick 2.0.0)

Imagick::setImageType — Sets the image type

说明

bool Imagick::setImageType ( int $image_type )

Sets the image type.

参数

image_type

返回值

成功时返回 TRUE。

User Contributed Notes

quickshiftin at gmail dot com 05-Oct-2014 03:29


The cleaner way to set the type to grayscale is to use the Imagick class constant.



$oBw = new \Imagick($sSourceImage);

$oBw->setImageType(\Imagick::IMGTYPE_GRAYSCALE);



I've found this to be a rather harsh 'convert to grayscale' approach. Fred's color2gray script works much better, but it's written in Bash. Time to get it ported over lol



http://www.fmwconcepts.com/imagemagick/color2gray/index.php

lee dot traynor at skeptic dot de 19-Oct-2011 10:37


This function can be used to desaturate an image, i.e. to convert a coloured image into a greyscale:



<?php



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

$im->setImageType (2);

//is now in 256 shades of grey



?>