Imagick::liquidRescaleImage

(PECL imagick 2 >= 2.2.0, PECL imagick 3)

Imagick::liquidRescaleImage — Animates an image or images

说明

public Imagick::liquidRescaleImage(
    int $width,
    int $height,
    float $delta_x,
    float $rigidity
): bool

This method scales the images using liquid rescaling method. This method is an implementation of a technique called seam carving. In order for this method to work as expected ImageMagick must be compiled with liblqr support. 此方法在Imagick基于ImageMagick 6.3.9以上版本编译时可用。

参数

width: The width of the target size
height: The height of the target size
delta_x: How much the seam can traverse on x-axis. Passing 0 causes the seams to be straight.
rigidity: Introduces a bias for non-straight seams. This parameter is typically 0.

返回值

成功时返回 true。

参见

Imagick::resizeImage() - Scales an image

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User Contributed Notes 1 note

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spider at man dot net ¶

12 years ago


<?php
     
    /* Create new object */
    $im = new Imagick( 'test.jpg' );
     
    /* Scale down */
    $im->liquidRescaleImage( 500, 200, 3, 25 );
     
    /* Display */
    header( 'Content-Type: image/jpg' );
    echo $im;
     
    ?>

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