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PO
primarykey
Id
11349192
data
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0
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0
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CreationDate
2012-07-05T17:09:46.957
FavoriteCount
0
LastActivityDate
2012-07-05T20:13:31.737
LastEditDate
2012-07-05T20:13:31.737
LastEditorUserId
99481
OwnerUserId
99481
ParentId
11108004
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
I am assuming that you are referring to the examples found here: <a href="http://www.imagemagick.org/Usage/photos/" rel="nofollow">http://www.imagemagick.org/Usage/photos/</a> With that said, I have been trying to accomplish the very same thing with PHP Imagick. I am using PHP Imagick 3.0.1 and ImageMagick 6.7.4-4 2012-01-09 Q16 in Linux. It appears that the blur composite mode is undocumented. I found it by looking through the ImageMagick source under <code>magick/composite.h</code> on line <code>88</code>. This code accomplishes what you are looking for: <pre><code>$im = new Imagick(); $im->readImageBlob(file_get_contents($src)); $qr = $im->getQuantumRange(); $qr = $qr['quantumRangeLong']; $im->sigmoidalContrastImage(true, 10, $qr / 2, Imagick::CHANNEL_ALL); $blurmap = new Imagick(); $blurmap->setOption('compose:args', '5'); $blurmap->newPseudoImage($im->getImageWidth(), $im->getImageHeight(), 'gradient:black-white'); $blurmap->functionImage(Imagick::FUNCTION_POLYNOMIAL, array(4.5, -4.5, 1)); $blurmap->levelImage(0, 1, $qr / 2); $im->compositeImage($blurmap, 57, 0, 0); $blurmap->destroy(); </code></pre> If you require more blur, simply change <code>compose:args</code> to <code>10</code> or something. One thing I figured out was that I had to set the option before I created/loaded anything into the wand itself. I could not get the <code>SparseColorImage()</code> function to behave as it does on the command line, although I am sure that someone else could contribute that part if they figure it out. The above is enough for my needs. EDIT: Upon further inspection of the images generated I noticed that even the black parts of the blur map were being blurred. After some searching it appears that this stems from a bug introduced in ImageMagick. I switched to version 6.7.8-1 2012-07-05 Q16 and the blur map now appears to be working. If you notice unwanted blurring with the blur composite I suggest you upgrade your ImageMagick.
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1. POTilt shifting an Image using ImageMagick in PHP
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