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Imagick::adaptiveResizeImage

PHP function Edit on GitHub ✎

(PECL imagick 2, PECL imagick 3)

Adaptively resize image with data dependent triangulation

Description

Imagick::adaptiveResizeImage(int $columns, int $rows, bool $bestfit = false, bool $legacy = false): bool

Adaptively resize image with data-dependent triangulation. Avoids blurring across sharp color changes. Most useful when used to shrink images slightly to a slightly smaller "web size"; may not look good when a full-sized image is adaptively resized to a thumbnail. 0x629

Note

Parameters

columns: The number of columns in the scaled image.
rows: The number of rows in the scaled image.
bestfit: Whether to fit the image within the given dimensions while preserving the aspect ratio.
legacy: Optional bool parameter. If set to true, the calculations are done with the small rounding bug that existed in Imagick before 3.4.0. If set to false, the calculations should produce the same results as the ImageMagick command-line tools.

Return Values

Success

Errors/Exceptions

Throws

Changelog

Version	Description
PECL imagick 2.1.0	Added optional fit parameter.
PECL imagick 2.1.0	This method now supports proportional scaling. Pass zero as either parameter for proportional scaling.
PECL imagick 3.4.0	Added the `legacy` parameter.

Examples

Using Imagick::adaptiveResizeImage()

Resize an image to a standard size for the web. This method works best when resizing to a size only slightly smaller than the previous image size.

php

<?php
header('Content-type: image/jpeg');

$image = new Imagick('image.jpg');
$image->adaptiveResizeImage(1024,768);

echo $image;
?>