PHP 8.1.0 Beta 1 available for testing

Imagick::deskewImage

(PECL imagick 2 >= 2.3.0, PECL imagick 3 >= 3.3.0)

Imagick::deskewImageRemoves skew from the image

Descrierea

public Imagick::deskewImage ( float $threshold ) : bool

This method can be used to remove skew from for example scanned images where the paper was not properly placed on the scanning surface. Această metodă este disponibilă dacă Imagick a fost compilat cu ImageMagick de versiunea 6.4.5 sau ulterior.

Parametri

threshold

Deskew threshold

Valorile întoarse

Exemple

Example #1 Imagick::deskewImage()

<?php
function deskewImage($threshold) {
    
$imagick = new \Imagick(realpath("images/NYTimes-Page1-11-11-1918.jpg"));
    
$deskewImagick = clone $imagick;
    
    
//This is the only thing required for deskewing.
    
$deskewImagick->deskewImage($threshold);

    
//The rest of this example is to make the result obvious - because
    //otherwise the result is not obvious.
    
$trim 9;

    
$deskewImagick->cropImage($deskewImagick->getImageWidth() - $trim$deskewImagick->getImageHeight(), $trim0);
    
$imagick->cropImage($imagick->getImageWidth() - $trim$imagick->getImageHeight(), $trim0);
    
$deskewImagick->resizeimage($deskewImagick->getImageWidth() / 2$deskewImagick->getImageHeight() / 2, \Imagick::FILTER_LANCZOS1);
    
$imagick->resizeimage($imagick->getImageWidth() / 2$imagick->getImageHeight() / 2, \Imagick::FILTER_LANCZOS1);
    
$newCanvas = new \Imagick();
    
$newCanvas->newimage($imagick->getImageWidth() + $deskewImagick->getImageWidth() + 20$imagick->getImageHeight(), 'red''jpg');
    
$newCanvas->compositeimage($imagick, \Imagick::COMPOSITE_COPY50);
    
$newCanvas->compositeimage($deskewImagick, \Imagick::COMPOSITE_COPY$imagick->getImageWidth() + 100);

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

?>

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