Imagick
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Imagick::combineImages

(PECL imagick 2.0.0)

Imagick::combineImagesCombines one or more images into a single image

说明

Imagick Imagick::combineImages ( int $channelType )

Combines one or more images into a single image. The grayscale value of the pixels of each image in the sequence is assigned in order to the specified channels of the combined image. The typical ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc.

参数

channelType

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

返回值

成功时返回 TRUE

错误/异常

错误时抛出 ImagickException。


Imagick
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用户评论:

Lee (2012-07-02 17:05:25)

This will separate out the individual RGB channels and recombine them:

<?php
$im 
= new Imagick ("test.jpg");
$red = clone $im;
$red->separateImageChannel (imagick::CHANNEL_RED);
$green = clone $im;
$green->separateImageChannel (imagick::CHANNEL_GREEN);
$red->addImage ($green);
$green->destroy ();
$blue = clone $im;
$blue->separateImageChannel (imagick::CHANNEL_BLUE);
$red->addImage ($blue);
$blue->destroy();
$red->setFirstIterator ();
$im_new $red->combineImages (imagick::CHANNEL_ALL);
$im_new->writeImage ("test_rebuilt.png");
echo 
"<img src=\"test_rebuilt.png\">\r\n";
?>

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