Imagick::trimImage

(PECL imagick 2.0.0)

Imagick::trimImage — Remove edges from the image

说明

Imagick::trimImage ( float $fuzz ) : bool

Remove edges that are the background color from the image. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。

参数

fuzz

By default target must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. The fuzz member of image defines how much tolerance is acceptable to consider two colors as the same. This parameter represents the variation on the quantum range.

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

范例

Example #1 Using Imagick::trimImage():

Trim an image, then display to the browser.

<?php
/* Create the object and read the image in */
$im = new Imagick("image.jpg");

/* Trim the image. */
$im->trimImage(0);

/* Ouput the image */
header("Content-Type: image/" . $im->getImageFormat());
echo $im;
?>

参见

相关文章
php gmagick remove edges from the imagephp imagick adds new image to imagick object image listphp imagick removes skew from the imagephp imagick reduces the speckle noise in an imagephp imagick enhance edges within the imagephp imagick returns the filename of a particular image in a sequencephp imagick gets the image ticks per secondphp imagick creates a new image as a copyphp imagick replaces the colors of an image with the closest color from a reference imagephp imagick creates a composite imagephp imagick adds or removes a profile from an imagephp imagick creates a high contrast two color imagephp imagick reads image from filenamephp imagick reads image from open filehandlephp imagick removes an image from the image listphp imagick offsets an imagephp imagick separates a channel from the imagephp imagick shaves pixels from the image edgesphp imagick remove edges from the imagephp mongogridfs remove files and their chunks from the database
关注编程学问公众号