Imagick::adaptiveThresholdImage

(PECL imagick 2, PECL imagick 3)

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

Descrição

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

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.

Parâmetros

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

Valor Retornado

Retorna true em caso de sucesso.

Exemplos

Exemplo #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();
}

?>

add a note

User Contributed Notes

There are no user contributed notes for this page.