CODEWITHSUNDEEP
phpimagemagickimagick
Terry
Terry

Reputation: 675

PHP Imagick - "-quantize transparent" equivalent

Is there a PHP Imagick equivalent for -quantize transparent ???

-quantize transparent usage example note: seach for '-quantize transparent' within page

Upvotes: 2

Views: 1759

Answers (1)

emcconville
emcconville

Reputation: 24439

Quantize is supported by PHP's Imagick extension; however, little documentation has been authored. Luckily, the example from "Color Quantization and Transparency" is straightforward.

convert alpha_gradient.png -quantize transparent \
    +dither  -colors 15   alpha_colors_15qt.png

From this example, we can determine the 5 arguments needed by Imagick::quantizeImage().

  • Number of colors = 15 (-colors 15)
  • Colorspace = transparent
  • Tree depth = 0 (undefined)
  • Dither = False (+dither)
  • Messure errors = False
<?php

$wand = new Imagick("alpha_gradient.png");
$wand->quantizeImage(15,Imagick::COLORSPACE_TRANSPARENT,0,false,false);
$wand->writeImage("alpha_colors_15qt.png");

Upvotes: 3

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