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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PECL imagick 2.0.0)
Imagick::setImageBackgroundColor — Sets the image background color
$background
)Sets the image background color.
background
成功时返回 TRUE
。
错误时抛出 ImagickException。
版本 | 说明 |
---|---|
2.1.0 | Now allows a string representing the color as the parameter. Previous versions allow only an ImagickPixel object. |
[#1] Matthias Zartmann [2014-06-17 20:33:32]
Small example to optimize a gray scanned image:
<?php
$im = new Imagick();
$im->readImage("~/scaninput_300DPI.tiff");
//deskew the image
$im->deskewImage(40);
//Crop to A4 and scanner pageoffset 50
$im->cropImage(2480, 3416, 50, 0);
//Need a Monochrome Image
$im->setImageColorspace(2);
$im->thresholdImage(11000);
//Compressen tiff CCITT Group 4
$im->setImageCompression(Imagick::COMPRESSION_GROUP4);
$im->writeimage("~/monochrome_300DPI.tiff");
//Cleanup
$im->clear();
$im->destroy();
?>