Imagick::resampleImage

(PECL imagick 2, PECL imagick 3)

Imagick::resampleImage — Reamostra imagem para a resolução desejada

Descrição

public Imagick::resampleImage(
    float $x_resolution,
    float $y_resolution,
    int $filter,
    float $blur
): bool

Reamostra imagem para a resolução desejada.

Parâmetros

x_resolution
y_resolution
filter
blur

Valor Retornado

Retorna true em caso de sucesso.

Exemplos

Exemplo #1 Exemplo de Imagick::resampleImage()

<?php
function resampleImage($imagePath) {
    $imagick = new \Imagick(realpath($imagePath));

    $imagick->resampleImage(200, 200, \Imagick::FILTER_LANCZOS, 1);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>

Melhore Esta Página

Aprenda Como Melhorar Esta Página • Envie uma Solicitação de Modificação • Reporte um Problema

＋adicionar nota

Notas de Usuários 3 notes

down

simon ¶

10 years ago

Please not that I had extremely high CPU usage using this function on Ubuntu linux 15.10. Switching to the resizeImage function fixed the problem.

down

bleighty at dvidshub dot net ¶

12 years ago

Please note that blur of 1 should not affect the image if I'm understanding correctly from this page:
http://www.php.net/manual/en/imagick.resizeimage.php

down

-4

anagai at yahoo dot com ¶

14 years ago

Lets say you want to reduce the resolution of uploaded images for the web.

The following will load a image at whatever resolution and resample it down to 72 dpi and save as a different file.

The dpi for setImageResolution() and resampleImage() should be whatever dpi your resampling too.

<?php
$image = new Imagick();
$image->readImage('image.jpg');
$image->setImageResolution(72,72);
$image->resampleImage(72,72,imagick::FILTER_UNDEFINED,0);
$image->writeImage('image72.jpg');
?>

＋adicionar nota