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• Revision 29928 : On réutilise l’ancien code pour débuter notre branche

  17 juillet 2009, par kent1@… — Log

  On réutilise l’ancien code pour débuter notre branche

• Padding thumbnail with color

  9 juin 2010, par Mikko Koppanen — Imagick, PHP stuff

  I know, it’s been a while since I last blogged. This is because a lot of things are happening in my personal life. I recently relocated to London from Finland and started a new job. Things are quite busy but I will try to post an example now and then. In the meanwhile I would like to hear about sites using Imagick, so if your project is not super secret please post an url and maybe a small explanation what you’re doing with Imagick on the site. This is purely for my personal interest.

  Anyway, to the point. Today’s example originates from a question asked by a user. How do I thumbnail the image inside given dimensions proportionally and fill the “blank” areas with a color ? Well, the answer is here

  The code is for Imagick 2.1.0 but adapting to older versions should not be hard.

  php

  < view plain text >

  1. < ?php
  2. /* Define width and height of the thumbnail */
  3. $width = 100 ;
  4. $height = 100 ;
  5.  
  6. /* Instanciate and read the image in */
  7. $im = new Imagick( "test.png" ) ;
  8.  
  9. /* Fit the image into $width x $height box
  10.  The third parameter fits the image into a "bounding box" */
  11. $im->thumbnailImage( $width, $height, true ) ;
  12.  
  13. /* Create a canvas with the desired color */
  14. $canvas = new Imagick() ;
  15. $canvas->newImage( $width, $height, ’pink’, ’png’ ) ;
  16.  
  17. /* Get the image geometry */
  18. $geometry = $im->getImageGeometry() ;
  19.  
  20. /* The overlay x and y coordinates */
  21. $x = ( $width - $geometry[’width’] ) / 2 ;
  22. $y = ( $height - $geometry[’height’] ) / 2 ;
  23.  
  24. /* Composite on the canvas */
  25. $canvas->compositeImage( $im, imagick: :COMPOSITE_OVER, $x, $y ) ;
  26.  
  27. /* Output the image*/
  28. header( "Content-Type : image/png" ) ;
  29. echo $canvas ;
  30.  
  31.  ?>

  The source image :
  

  The resulting image :
  

• How to add a color gradient to black and white in ffmpeg

  4 mai 2016, par Axiverse

  I’m converting a sequences of image files to video using ffmpeg. They are black and white representing a range of data. I want to apply a color gradient to the videos, something like black->white becomes black->red->orange->white.

  How do I do this with ffmpeg ?