Imagick::morphology
(PECL imagick 3 >= 3.3.0)
Imagick::morphology β Applies a user supplied kernel to the image according to the given morphology method.
ΠΠΏΠΈΡ
Β Β Β Β int
$morphologyMethod,Β Β Β Β int
$iterations,Β Β Β Β ImagickKernel
$ImagickKernel,Β Β Β Β int
$channel = Imagick::CHANNEL_DEFAULT): bool
Applies a user supplied kernel to the image according to the given morphology method.
ΠΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈ
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-
ΠΠ½Π°ΡΠ΅Π½Π½Ρ, ΡΠΎ ΠΏΠΎΠ²Π΅ΡΡΠ°ΡΡΡΡΡ
ΠΠΎΠ²Π΅ΡΡΠ°Ρ true Π² ΡΠ°Π·Ρ ΡΡΠΏΡΡ
Ρ.
ΠΡΠΈΠΊΠ»Π°Π΄ΠΈ
ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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();
?>ΠΡΠΈΠΊΠ»Π°Π΄ #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;
}
?>User Contributed Notes
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