Imagick::morphology

(PECL imagick 3 >= 3.3.0)

Imagick::morphology — 根据给定的形态学方法，将用户提供的内核应用于图像。

描述

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

根据给定的形态学方法，将用户提供的内核应用于图像。

参数

morphologyMethod: 要使用的形态学方法，其中之一为 \Imagick::MORPHOLOGY_* 常量。
iterations: 应用形态学函数的迭代次数。值为 -1 表示循环直到没有发现变化。具体应用方式可能取决于形态学方法。通常此值为 1。
ImagickKernel
channel

返回值

成功时返回 true。

示例

示例 #1 卷积 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();

?>

示例 #2 相关 Imagick::morphology()

<?php

 // 左上角像素必须为黑色
 // 右下角像素必须为白色
 // 我们不关心其他像素。
 

 $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();

?>

示例 #3 腐蚀 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();

?>

示例 #4 腐蚀强度 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();

?>

示例 #5 膨胀 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();

?>

示例 #6 膨胀强度 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();

?>

示例 #7 使用 Chebyshev 内核的距离 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();

?>

示例 #8 使用曼哈顿内核计算距离 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();

?>

示例 #9 使用八边形内核计算距离 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();

?>

示例 #10 使用欧几里得内核计算距离 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();

?>

示例 #11 边缘 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();

?>

示例 #12 开运算 Imagick::morphology()

<?php
 // 结果将显示开运算平滑了轮廓，通过圆化任何尖角，并删除任何小于所用形状的部件。它还会断开或“打开”任何细桥。
 $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();

?>

示例 #13 开运算（强度） Imagick::morphology()

<?php
 // 结果将显示开运算平滑了轮廓，通过圆化任何尖角，并删除任何小于所用形状的部件。它还会断开或“打开”任何细桥。

 $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();

?>

示例 #14 闭运算 Imagick::morphology()

<?php
 // 闭运算的基本用途是减少或消除任何大小与内核“结构元素”相似的“孔”或“间隙”。即“闭合”背景中大小约为该结构元素的部件。
 $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();

?>

示例 #15 闭运算（强度） Imagick::morphology()

<?php
 // 'Close' 方法的基本用途是减少或消除任何大小约为内核“结构元素”的“孔”或“间隙”。 也就是说，将背景中大约那个大小的部分“闭合”。
 $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();

?>

示例 #16 平滑 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();

?>

示例 #17 内部边缘 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();

?>

示例 #18 外部边缘 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();

?>

示例 #19 “顶帽”方法，更准确地说，“白顶帽”，返回被形状开运算移除的像素，即用于圆化点和连接形状之间的桥的像素。 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();

?>

示例 #20 “底帽”方法，也称为“黑顶帽”，是形状闭运算添加到图像中的像素。也就是说，用于填充“孔”、“间隙”和“桥”的像素。 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();

?>

示例 #21 击中或错过 Imagick::morphology()

<?php
 $canvas = $this->getCharacterOutline();
 // 这将找到所有具有 3 个像素右边缘的像素
 $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();

?>

示例 #22 细化 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();

?>

示例 #23 增厚 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();

?>

示例 #24 使用 Imagick::morphology() 生成凸包

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

 // thicken 形态学操作不能处理小缝隙。我们使用 close 形态学操作来关闭它们
 // 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();

?>

示例 #25 迭代形态学操作 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();

?>

示例 #26 获取图像轮廓的辅助函数 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;
}
?>

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