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Imagick::adaptiveSharpenImage

(PECL imagick 2.0.0)

Imagick::adaptiveSharpenImage — Adaptively sharpen the image

Description

代码语言:javascript
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bool Imagick::adaptiveSharpenImage ( float $radius , float $sigma [, int $channel = Imagick::CHANNEL_DEFAULT ] )

Adaptively sharpen the image by sharpening more intensely near image edges and less intensely far from edges. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.

Parameters

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 channel constants using bitwise operators. Defaults to Imagick::CHANNEL_DEFAULT. Refer to this list of channel constants

Return Values

Returns TRUE on success.

Examples

Example #1 A Imagick::adaptiveSharpenImage() example

Adaptively sharpen the image with radius 2 and sigma 1.

代码语言:javascript
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<?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;
?>

See Also

  • Imagick::sharpenImage() - Sharpens an image

← Imagick::adaptiveResizeImage

Imagick::adaptiveThresholdImage →

代码语言:txt
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 ? 1997–2017 The PHP Documentation Group

Licensed under the Creative Commons Attribution License v3.0 or later.

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