Imagick::adaptiveSharpenImage

(No version information available, might be only in CVS)

Imagick::adaptiveSharpenImage — Adaptively sharpen the image

说明

bool Imagick::adaptiveSharpenImage ( float $radius , float $sigma [, int $channel ] )

Warning

本函数暂无文档，仅有参数列表。

Warning

本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。

Adaptively sharpen the image by sharpening more intensely near image edges and less intensely far from edges.

参数

radius: The radius of the Gaussian, in pixels, not counting the center pixel. Use 0 for auto-select.
sigma: The standard deviation of the Gaussian, in pixels.
channel: Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.

返回值

Returns TRUE on success.

范例

Example#1 A Imagick::adaptiveSharpenImage() example

Adaptively sharpen the image with radius 2 and sigma 1.


<?php
try {
    $image = new Imagick('image.png');
    $image->adaptiveSharpenImage(2,1);
} catch(ImagickException $e) {
    echo 'Error: ' , $e->getMessage();
    die();
}
header('Content-type: image/png');
echo $image;
?>

参见

Imagick::sharpenImage()


	PHP5中文手册 Imagick::adaptiveResizeImage Imagick::adaptiveThresholdImage Imagick Image Library PHP Manual Imagick::adaptiveSharpenImage (No version information available, might be only in CVS) Imagick::adaptiveSharpenImage — Adaptively sharpen the image 说明 bool Imagick::adaptiveSharpenImage ( float `$radius` , float `$sigma` [, int `$channel` ] ) Warning 本函数暂无文档，仅有参数列表。 Warning 本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。 Adaptively sharpen the image by sharpening more intensely near image edges and less intensely far from edges. 参数 `radius` The radius of the Gaussian, in pixels, not counting the center pixel. Use 0 for auto-select. `sigma` The standard deviation of the Gaussian, in pixels. `channel` Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants. 返回值 Returns `TRUE` on success. 范例 Example#1 A Imagick::adaptiveSharpenImage() example Adaptively sharpen the image with radius 2 and sigma 1. `<?php try { $image = new Imagick('image.png'); $image->adaptiveSharpenImage(2,1); } catch(ImagickException $e) { echo 'Error: ' , $e->getMessage(); die(); } header('Content-type: image/png'); echo $image; ?>` 参见 Imagick::sharpenImage() Imagick::adaptiveResizeImage Imagick::adaptiveThresholdImage Imagick Image Library PHP Manual