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Imagick::transparentPaintImage

PHP function Edit on GitHub ✎

(PECL imagick 2 >= 2.3.0, PECL imagick 3)

Paints pixels transparent

Description

Imagick::transparentPaintImage(mixed $target, float $alpha, float $fuzz, bool $invert): bool

Paints pixels matching the target color transparent. 0x638

Parameters

target: The target color to paint
alpha: Alpha
fuzz: Fuzz
invert: If true paints any pixel that does not match the target color.

Return Values

Success

Examples

Imagick::transparentPaintImage()

php

<?php
function transparentPaintImage($color, $alpha, $fuzz) {
    $imagick = new \Imagick(realpath("images/BlueScreen.jpg"));

    //Need to be in a format that supports transparency
    $imagick->setimageformat('png');

    $imagick->transparentPaintImage(
        $color, $alpha, $fuzz * \Imagick::getQuantum(), false
    );

    //Not required, but helps tidy up left over pixels
    $imagick->despeckleimage();

    header("Content-Type: image/png");
    echo $imagick->getImageBlob();
}

?>

Source: reference/imagick/imagick/transparentpaintimage.xml · from the official PHP manual (php/doc-en)