circularize an image with imagick

Question

Trying to take a rectangular photo, crop it into a square region, and then mask it into a circular with a transparent background.

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Answer 1

For those with an older version of Imagick (setimagematte does not exist in version lower than 6.2.9), I came up with an easy solution. The thing here is to copy opacity from the mask to the original image.

Original Image:

Mask:

Result:

The code:

$base = new Imagick('original.jpg');
$mask = new Imagick('mask.png');

$base->compositeImage($mask, Imagick::COMPOSITE_COPYOPACITY, 0, 0);
$base->writeImage('result.png');

You could use an Imagick black circle as mask but I though it wasn't perfect so I used my own.

Of course you will certainly have to resize / crop your images but that's another story.

Hope this helps.

J.