Imagick::morphology

(PECL imagick 3 >= 3.3.0)

Imagick::morphology — Applies a user supplied kernel to the image according to the given morphology method.

Опис

public Imagick::morphology(
    int $morphologyMethod,
    int $iterations,
    ImagickKernel $ImagickKernel,
    int $channel = Imagick::CHANNEL_DEFAULT
): bool

Applies a user supplied kernel to the image according to the given morphology method.

Параметри

morphologyMethod: Which morphology method to use one of the \Imagick::MORPHOLOGY_* constants.
iterations: The number of iteration to apply the morphology function. A value of -1 means loop until no change found. How this is applied may depend on the morphology method. Typically this is a value of 1.
ImagickKernel
channel

Значення, що повертаються

Повертає true в разі успіху.

Приклади

Приклад #1 Convolve Imagick::morphology()

<?php
        $imagick = $this->getCharacter();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_GAUSSIAN, "5,1");
        $imagick->morphology(\Imagick::MORPHOLOGY_CONVOLVE, 2, $kernel);
        header("Content-Type: image/png");
        echo $imagick->getImageBlob();

?>

Приклад #2 Correlate Imagick::morphology()

<?php

        // Top-left pixel must be black
        // Bottom right pixel must be white
        // We don't care about the rest.
        

        $imagick = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromMatrix(self::$correlateMatrix, [2, 2]);
        $imagick->morphology(\Imagick::MORPHOLOGY_CORRELATE, 1, $kernel);
        header("Content-Type: image/png");
        echo $imagick->getImageBlob();

?>

Приклад #3 Erode Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_ERODE, 2, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #4 Erode Intensity Imagick::morphology()

<?php
        $canvas = $this->getCharacter();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "1");
        $canvas->morphology(\Imagick::MORPHOLOGY_ERODE_INTENSITY, 2, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #5 Dilate Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_DILATE, 4, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #6 Dilate intensity Imagick::morphology()

<?php
        $canvas = $this->getCharacter();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "1");
        $canvas->morphology(\Imagick::MORPHOLOGY_DILATE_INTENSITY, 4, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #7 Distance with Chebyshev kernel Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_CHEBYSHEV, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_DISTANCE, 3, $kernel);
        $canvas->autoLevelImage();
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #8 Distance with Manhattan kernel Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_MANHATTAN, "5");
        $canvas->morphology(\Imagick::MORPHOLOGY_DISTANCE, 3, $kernel);
        $canvas->autoLevelImage();
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #9 Distance with ocatagonal kernel Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGONAL, "5");
        $canvas->morphology(\Imagick::MORPHOLOGY_DISTANCE, 3, $kernel);
        $canvas->autoLevelImage();
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #10 Distance with Euclidean kernel Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_EUCLIDEAN, "4");
        $canvas->morphology(\Imagick::MORPHOLOGY_DISTANCE, 3, $kernel);
        $canvas->autoLevelImage();
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #11 Edge Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_EDGE, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #12 Open Imagick::morphology()

<?php
        // As a result you will see that 'Open' smoothed the outline, by rounding off any sharp points, and remove any parts that is smaller than the shape used. It will also disconnect or 'open' any thin bridges.
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "6");
        $canvas->morphology(\Imagick::MORPHOLOGY_OPEN, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #13 Open intensity Imagick::morphology()

<?php
        // As a result you will see that 'Open' smoothed the outline, by rounding off any sharp points, and remove any parts that is smaller than the shape used. It will also disconnect or 'open' any thin bridges.

        $canvas = $this->getCharacter();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "6");
        $canvas->morphology(\Imagick::MORPHOLOGY_OPEN_INTENSITY, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #14 Close Imagick::morphology()

<?php
        //The basic use of the 'Close' method is to reduce or remove any 'holes' or 'gaps' about the size of the kernel 'Structure Element'. That is 'close' parts of the background that are about that size.
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "6");
        $canvas->morphology(\Imagick::MORPHOLOGY_CLOSE, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #15 Close Intensity Imagick::morphology()

<?php
        //The basic use of the 'Close' method is to reduce or remove any 'holes' or 'gaps' about the size of the kernel 'Structure Element'. That is 'close' parts of the background that are about that size.
        $canvas = $this->getCharacter();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "6");
        $canvas->morphology(\Imagick::MORPHOLOGY_CLOSE_INTENSITY, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #16 Smooth Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_SMOOTH, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #17 Edge in Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_EDGE_IN, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #18 Edge out Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_OCTAGON, "3");
        $canvas->morphology(\Imagick::MORPHOLOGY_EDGE_OUT, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #19 The 'TopHat' method, or more specifically 'White Top Hat', returns the pixels that were removed by a Opening of the shape, that is the pixels that were removed to round off the points, and the connecting bridged between shapes. Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "5");
        $canvas->morphology(\Imagick::MORPHOLOGY_TOP_HAT, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #20 The 'BottomHat' method, also known as 'Black TopHat' is the pixels that a Closing of the shape adds to the image. That is the pixels that were used to fill in the 'holes', 'gaps', and 'bridges'. Imagick::morphology()

<?php

        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "5");
        $canvas->morphology(\Imagick::MORPHOLOGY_BOTTOM_HAT, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #21 Hit and Miss Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        //This finds all the pixels with 3 pixels of the right edge
        $matrix = [[1, false, false, 0]];
        $kernel = \ImagickKernel::fromMatrix(
            $matrix,
            [0, 0]
        );
        $canvas->morphology(\Imagick::MORPHOLOGY_HIT_AND_MISS, 1, $kernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #22 Thinning Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $leftEdgeKernel = \ImagickKernel::fromMatrix([[0, 1]], [1, 0]);
        $rightEdgeKernel = \ImagickKernel::fromMatrix([[1, 0]], [0, 0]);
        $leftEdgeKernel->addKernel($rightEdgeKernel);
        
        $canvas->morphology(\Imagick::MORPHOLOGY_THINNING, 3, $leftEdgeKernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #23 Thicken Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $leftEdgeKernel = \ImagickKernel::fromMatrix([[0, 1]], [1, 0]);
        $rightEdgeKernel = \ImagickKernel::fromMatrix([[1, 0]], [0, 0]);
        $leftEdgeKernel->addKernel($rightEdgeKernel);

        $canvas->morphology(\Imagick::MORPHOLOGY_THICKEN, 3, $leftEdgeKernel);
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #24 Thick to generate a convex hull Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $diamondKernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DIAMOND, "1");
        $convexKernel =  \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_CONVEX_HULL, "");

        // The thicken morphology doesn't handle small gaps. We close them
        // with the close morphology.
        $canvas->morphology(\Imagick::MORPHOLOGY_CLOSE, 1, $diamondKernel);
        $canvas->morphology(\Imagick::MORPHOLOGY_THICKEN, -1, $convexKernel);
        $canvas->morphology(\Imagick::MORPHOLOGY_CLOSE, 1, $diamondKernel);

        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #25 Iterative morphology Imagick::morphology()

<?php
        $canvas = $this->getCharacterOutline();
        $kernel = \ImagickKernel::fromBuiltIn(\Imagick::KERNEL_DISK, "2");        
        $canvas->morphology(\Imagick::MORPHOLOGY_ITERATIVE, 3, $kernel);
        $canvas->autoLevelImage();
        header("Content-Type: image/png");
        echo $canvas->getImageBlob();

?>

Приклад #26 Helper function to get an image silhouette Imagick::morphology()

<?php
function getCharacterOutline() {
    $imagick = new \Imagick(realpath("./images/character.png"));
    $character = new \Imagick();
    $character->newPseudoImage(
        $imagick->getImageWidth(),
        $imagick->getImageHeight(),
        "canvas:white"
    );
    $canvas = new \Imagick();
    $canvas->newPseudoImage(
        $imagick->getImageWidth(),
        $imagick->getImageHeight(),
        "canvas:black"
    );

    $character->compositeimage(
        $imagick,
        \Imagick::COMPOSITE_COPYOPACITY,
        0, 0
    );
    $canvas->compositeimage(
        $character,
        \Imagick::COMPOSITE_ATOP,
        0, 0
    );
    $canvas->setFormat('png');

    return $canvas;
}
?>