GoLang Imagick::adaptiveThresholdImage

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PHP Imagick::adaptiveThresholdImage

PHP original manual for Imagick::adaptiveThresholdImage [ show | php.net ]

Imagick::adaptiveThresholdImage

(PECL imagick 2.0.0)

Imagick::adaptiveThresholdImage — Selects a threshold for each pixel based on a range of intensity

Description

bool Imagick::adaptiveThresholdImage ( int $width , int $height , int $offset )

Selects an individual threshold for each pixel based on the range of intensity values in its local neighborhood. This allows for thresholding of an image whose global intensity histogram doesn't contain distinctive peaks.

Parameters

width: Width of the local neighborhood.
height: Height of the local neighborhood.
offset: The mean offset

Return Values

Returns TRUE on success.

Examples

Example #1 Imagick::adaptiveThresholdImage()


<?php
function adaptiveThresholdImage($imagePath, $width, $height, $adaptiveOffset) {
    $imagick = new \Imagick(realpath($imagePath));
    $adaptiveOffsetQuantum = intval($adaptiveOffset * \Imagick::getQuantum());
    $imagick->adaptiveThresholdImage($width, $height, $adaptiveOffsetQuantum);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>

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