(PECL imagick 2 >= 2.3.0, PECL imagick 3 >= 3.3.0)
Imagick::deskewImage — Removes skew from the image
This method can be used to remove skew from for example scanned images where the paper was not properly placed on the scanning surface. Цей метод доступний, якщо Imagick зібраний з ImageMagick версії 6.4.5 або новішою.
thresholdDeskew threshold
Приклад #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(), $trim, 0);
$imagick->cropImage($imagick->getImageWidth() - $trim, $imagick->getImageHeight(), $trim, 0);
$deskewImagick->resizeimage($deskewImagick->getImageWidth() / 2, $deskewImagick->getImageHeight() / 2, \Imagick::FILTER_LANCZOS, 1);
$imagick->resizeimage($imagick->getImageWidth() / 2, $imagick->getImageHeight() / 2, \Imagick::FILTER_LANCZOS, 1);
$newCanvas = new \Imagick();
$newCanvas->newimage($imagick->getImageWidth() + $deskewImagick->getImageWidth() + 20, $imagick->getImageHeight(), 'red', 'jpg');
$newCanvas->compositeimage($imagick, \Imagick::COMPOSITE_COPY, 5, 0);
$newCanvas->compositeimage($deskewImagick, \Imagick::COMPOSITE_COPY, $imagick->getImageWidth() + 10, 0);
header("Content-Type: image/jpg");
echo $newCanvas->getImageBlob();
}
?>