Imagick::colorizeImage

(PECL imagick 2.0.0)

Imagick::colorizeImageBlends the fill color with the image

Description

bool Imagick::colorizeImage ( mixed $colorize , mixed $opacity )

Blends the fill color with each pixel in the image.

Parameters

colorize

ImagickPixel object or a string containing the colorize color

opacity

ImagickPixel object or an float containing the opacity value. 1.0 is fully opaque and 0.0 is fully transparent.

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Changelog

Version Description
2.1.0 Now allows a string representing the color as the first parameter and a float representing the opacity value as the second parameter. Previous versions allow only an ImagickPixel objects.

Коментарии

simplest example

<?php
$nombre 
'001-4-0043.jpg';
$img = new Imagick($nombre);
$img->negateImage(false);
//$pixblu = new ImagickPixel('#000040');
$img->colorizeImage('#0000b0',1.0);
header('content-type: image/jpeg');
echo 
$img;
?>
2009-04-08 12:42:16
http://php5.kiev.ua/manual/ru/imagick.colorizeimage.html
When you're using an image with an alpha channel (for example a transparent png), a value of 1.0 will return a completely transparent image, but a value of 1 works just fine.
2011-12-28 09:19:28
http://php5.kiev.ua/manual/ru/imagick.colorizeimage.html
Do you want a color overlay with TRUE opacity control? Try this:

<?php

class YourImagick extends Imagick
{
    public function 
colorize($color$alpha 1)
    {
       
$draw = new ImagickDraw();

       
$draw->setFillColor($color);

        if (
is_float($alpha)) {
           
$draw->setFillAlpha($alpha);
        }

       
$geometry $this->getImageGeometry();
       
$width $geometry['width'];
       
$height $geometry['height'];

       
$draw->rectangle(00$width$height);

       
$this->drawImage($draw);
    }
}

?>

How to use:

<?php

$imagick 
= new YourImagick('example.png');

$imagick->colorize('#ffcc00'0.35);

header('Content-type: image/png');

echo 
$source;

?>
2012-05-11 16:26:10
http://php5.kiev.ua/manual/ru/imagick.colorizeimage.html
To improve upon "php at lfbittencourt dot com"'s solution, this one blends the composited color, and takes opacity into account as well.

<?php
class YourImagick extends Imagick
{
    public function 
colorize($color$alpha 1$composite_flag Imagick::COMPOSITE_COLORIZE)
    {
       
$draw = new ImagickDraw();

       
$draw->setFillColor($color);

       
$geometry $this->getImageGeometry();
       
$width $geometry['width'];
       
$height $geometry['height'];

       
$draw->rectangle(00$width$height);

       
$temporary = new Imagick();
       
$temporary->setBackgroundColor(new ImagickPixel('transparent'));
       
$temporary->newImage($width$height, new ImagickPixel('transparent'));
       
$temporary->setImageFormat('png32');
       
$temporary->drawImage($draw);

       
$alphaChannel $this->clone();
       
$alphaChannel->setImageAlphaChannel(Imagick::ALPHACHANNEL_EXTRACT);
       
$alphaChannel->negateImage(falseImagick::CHANNEL_ALL);
       
$this->setImageClipMask($alphaChannel);

       
$clone $this->clone();
       
$clone->compositeImage($temporary$composite_flag00);
       
$clone->setImageOpacity($alpha);

       
$this->compositeImage($cloneImagick::COMPOSITE_DEFAULT00);
    }
}
?>
2013-12-18 14:24:15
http://php5.kiev.ua/manual/ru/imagick.colorizeimage.html
If you're looking for a solution to fill the image with a solid color, preserving background transparency, here is one way:

<?php
$im 
= new Imagick('image.png');
$im->setImageAlphaChannel(Imagick::ALPHACHANNEL_EXTRACT);
$im->setImageBackgroundColor('color');
$im->setImageAlphaChannel(Imagick::ALPHACHANNEL_SHAPE);
$im->writeImage('output.png');
$im->destroy();
?>
2014-03-22 16:35:00
http://php5.kiev.ua/manual/ru/imagick.colorizeimage.html
The solution published by "olav at redwall dot ee " was adding a black surround outside each non-transparent shape.

Here is my improved version :

<?php
public function colorize($color$alpha 1)
{
   
$geometry $this->getImageGeometry();
   
$width $geometry['width'];
   
$height $geometry['height'];
       
   
$draw = new ImagickDraw;
   
$draw->setFillColor($color);
   
$draw->rectangle(00$width$height);

   
$temporary = new Imagick;
   
$temporary->setBackgroundColor(new ImagickPixel('transparent'));
   
$temporary->newImage($width$height, new ImagickPixel('transparent'));
   
$temporary->setImageFormat('png32');
   
$temporary->drawImage($draw);
   
$temporary->compositeImage($thisImagick::COMPOSITE_COPYOPACITY00);
       
   
$this->setImageArtifact('compose:args', ($alpha 100) . '%,100%');
   
$this->compositeImage($temporaryImagick::COMPOSITE_DISSOLVE00);
}
?>
2022-12-01 15:09:24
http://php5.kiev.ua/manual/ru/imagick.colorizeimage.html

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