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Introduzione> <Processamento e generazione di immagini
Last updated: Fri, 18 Jul 2008

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Image Processing (ImageMagick)



Introduzione> <Processamento e generazione di immagini
Last updated: Fri, 18 Jul 2008
 
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ImageMagick
Eero Niemi (eero at eero dot info)
08-Apr-2008 04:06
To load image (usually vector image, like PDF) with larger resolution than image's default is, you have to set resolution before reading the file, like this:

<?php
$im = new Imagick();
$im->setResolution( 300, 300 );
$im->readImage( "test.pdf" );
?>
mlong-php at mlong dot us
24-Oct-2007 10:11
The fit functionality of thumbnailImage doesn't work as one would anticipate. Instead, use this to make a thumbnail that has max of 200x82:

  // Create thumbnail max of 200x82
  $width=$im->getImageWidth();
  if ($width > 200) { $im->thumbnailImage(200,null,0); }

  $height=$im->getImageHeight();
  if ($height > 82) { $im->thumbnailImage(null,82,0); }
mlong-php at mlong dot us
24-Oct-2007 08:46
Here is an example on how to take an image that is already in a string (say, from a database), and resize it, add a border, and print it out. I use this for showing reseller logos

  // Decode image from base64
  $image=base64_decode($imagedata);

  // Create Imagick object
  $im = new Imagick();

  // Convert image into Imagick
  $im->readimageblob($image);

  // Create thumbnail max of 200x82
  $im->thumbnailImage(200,82,true);

  // Add a subtle border
  $color=new ImagickPixel();
  $color->setColor("rgb(220,220,220)");
  $im->borderImage($color,1,1);

  // Output the image
  $output = $im->getimageblob();
  $outputtype = $im->getFormat();

  header("Content-type: $outputtype");
  echo $output;
gmail dot com at james dot ellis
08-Oct-2007 01:41
In case anyone is wondering about some examples for Imagick usage, take a look at Mikko Koppanen's blog at http://valokuva.org/?cat=1.
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Introduzione> <Processamento e generazione di immagini
Last updated: Fri, 18 Jul 2008
 
 
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