Imagick::convolveImage
Actually, the Imagick::setImagePage(0,0,0,0) is also handy with jpgs and pngs, if you plan to do any more changes on the cropped image that involves positioning and/or gravity (I created a script that does crop, face blur and watermarking in one go, and had a hell of a time determining why the blurs and the watermark text never showed up...).
Imagick::cropImage
(PECL imagick 2.0.0)
Imagick::cropImage — 画像の一部を抽出する
説明
bool Imagick::cropImage
( int
$width
, int $height
, int $x
, int $y
)画像の一部を抽出します。
パラメータ
-
width -
抽出する幅。
-
height -
抽出する高さ。
-
x -
抽出する領域の左上の X 座標。
-
y -
抽出する領域の左上の Y 座標。
返り値
成功した場合に TRUE を返します。
エラー / 例外
エラー時に ImagickException をスローします。
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User Contributed Notes
Imagick::cropImage
ElPadre
05-Nov-2010 08:55
Christian Dehning
09-Apr-2010 03:57
When cropping gif-images (I had no problems with jpg and png images), the canvas is not removed. Please run the following command on the cropped gif, to remove the blank space:
$im->setImagePage(0, 0, 0, 0);
vincent dot hoen at gmail dot com
02-Aug-2007 06:35
There is an easiest way to crop an image :
$picture = new Imagick('animated_gif.gif');
foreach($picture as $frame){
$frame->cropImage($width, $height, $x, $y);
}
vincent dot hoen at gmail dot com
01-Aug-2007 08:39
If you're working with animated gif you might want to process this way (Probably not the best, but at least it works) :
$picture = new Imagick('animated_gif.gif');
//Crop first image
$picture->cropImage($width, $height, $x, $y);
//Crop every other image
while($picture->hasNextImage()){
$this->nextImage();
$this->cropImage($width, $height, $x, $y);
}
//display image
$picture->getImageBlob();