]]>
 

Image Magick

 :

  1. <?php
  2.  
  3. /* The original image is the average colors */
  4. $average = new Imagick( "test.png" );
  5.  
  6. /* Reduce the amount of colors to 10 */
  7. $average->quantizeImage( 10, Imagick::COLORSPACE_RGB, 0, false, false );
  8.  
  9. /* Only save one pixel of each color */
  10. $average->uniqueImageColors();
  11.  
  12. /* Clone the average and modulate to brighter */
  13. $bright = $average->clone();
  14. $bright->modulateImage ( 125, 200, 100 );
  15.  
  16. /* Clone the average and modulate to darker */
  17. $dark = $average->clone();
  18. $dark->modulateImage ( 80, 100, 100 );
  19.  
  20. /* Helper function to create the mini-images */
  21. function createImages( Imagick $composite, Imagick $im )
  22. {
  23.     /* Get ImagickPixelIterator */
  24.     $it = $im->getPixelIterator();
  25.    
  26.     /* Reset the iterator to begin */
  27.     $it->resetIterator();
  28.  
  29.     /* Loop trough rows */
  30.     while( $row = $it->getNextIteratorRow() )
  31.     {
  32.         /* Loop trough columns */
  33.         foreach ( $row as $pixel )
  34.         {      
  35.             /* Create a new image which contains the color */
  36.             $composite->newImage( 20, 20, $pixel );
  37.             $composite->borderImage( new ImagickPixel( "black" ), 1, 1 );
  38.         }
  39.     }
  40. }
  41. /* This object holds the color images */
  42. $composite = new Imagick();
  43.  
  44. /* Create "icons" for each palette */
  45. createImages( $composite, $dark );
  46. createImages( $composite, $average );
  47. createImages( $composite, $bright );
  48.  
  49. /* Montage the color images into single image
  50.    Ten images per row, three rows */
  51. $montage = $composite->montageImage( new imagickdraw(), "10x3+0+0",
  52.                                       "20x20+4+3>", imagick::MONTAGEMODE_UNFRAME,
  53.                                       "0x0+3+3" );
  54.  
  55. /* Free some resources */
  56. $composite->destroy();
  57.  
  58. /* Create an empty canvas */
  59. $canvas = new Imagick();
  60. $canvas->newImage( $montage->getImageWidth() + 55,
  61.                    $montage->getImageHeight(),
  62.                    new ImagickPixel( "white" ) );
  63.  
  64. /* Display the canvas as png */
  65. $canvas->setImageFormat( "png" );
  66.  
  67. /* Set font size to 12 points */
  68. $draw = new ImagickDraw();
  69. $draw->setFontSize( 12 );
  70.  
  71. /* Create legends for each palette */
  72. $canvas->annotateImage( $draw, 5, 20, 0, "Dark: " );
  73. $canvas->annotateImage( $draw, 5, 45, 0, "Average: " );
  74. $canvas->annotateImage( $draw, 5, 70, 0, "Bright: " );
  75.  
  76. /* Composite the montaged images next to texts */
  77. $canvas->compositeImage( $montage, Imagick::COMPOSITE_OVER, 55, 0 );
  78.  
  79. /* Output the image */
  80. header( "Content-Type: image/png" );
  81. echo $canvas;
  82.  
  83. ?>

 

 

original article  

 
loading
close