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php-qrcode/classes/chillerlan-QRCode-Detector-Detector.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Documentation</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<base href="../">
<link rel="icon" href="images/favicon.ico"/>
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/base.css">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@400;600;700&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@400;600;700&display=swap" rel="stylesheet">
<link rel="stylesheet" href="css/template.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.0/css/all.min.css" integrity="sha256-ybRkN9dBjhcS2qrW1z+hfCxq+1aBdwyQM5wlQoQVt/0=" crossorigin="anonymous" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/themes/prism-okaidia.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/line-numbers/prism-line-numbers.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/line-highlight/prism-line-highlight.css">
<script src="https://cdn.jsdelivr.net/npm/fuse.js@3.4.6"></script>
<script src="https://cdn.jsdelivr.net/npm/css-vars-ponyfill@2"></script>
<script src="js/search.js"></script>
<script defer src="js/searchIndex.js"></script>
</head>
<body id="top">
<header class="phpdocumentor-header phpdocumentor-section">
<h1 class="phpdocumentor-title"><a href="" class="phpdocumentor-title__link">Documentation</a></h1>
<input class="phpdocumentor-header__menu-button" type="checkbox" id="menu-button" name="menu-button" />
<label class="phpdocumentor-header__menu-icon" for="menu-button">
<i class="fas fa-bars"></i>
</label>
<section data-search-form class="phpdocumentor-search">
<label>
<span class="visually-hidden">Search for</span>
<svg class="phpdocumentor-search__icon" width="21" height="20" viewBox="0 0 21 20" fill="none" xmlns="http://www.w3.org/2000/svg">
<circle cx="7.5" cy="7.5" r="6.5" stroke="currentColor" stroke-width="2"/>
<line x1="12.4892" y1="12.2727" x2="19.1559" y2="18.9393" stroke="currentColor" stroke-width="3"/>
</svg>
<input type="search" class="phpdocumentor-field phpdocumentor-search__field" placeholder="Loading .." disabled />
</label>
</section>
<nav class="phpdocumentor-topnav">
<ul class="phpdocumentor-topnav__menu">
</ul>
</nav>
</header>
<main class="phpdocumentor">
<div class="phpdocumentor-section">
<input class="phpdocumentor-sidebar__menu-button" type="checkbox" id="sidebar-button" name="sidebar-button" />
<label class="phpdocumentor-sidebar__menu-icon" for="sidebar-button">
Menu
</label>
<aside class="phpdocumentor-column -four phpdocumentor-sidebar">
<section class="phpdocumentor-sidebar__category">
<h2 class="phpdocumentor-sidebar__category-header">Namespaces</h2>
<h4 class="phpdocumentor-sidebar__root-namespace">
<a href="namespaces/chillerlan.html" class="">chillerlan</a>
</h4>
<ul class="phpdocumentor-list">
<li>
<a href="namespaces/chillerlan-qrcode.html" class="">QRCode</a>
</li>
<li>
<a href="namespaces/chillerlan-qrcodetest.html" class="">QRCodeTest</a>
</li>
</ul>
</section>
<section class="phpdocumentor-sidebar__category">
<h2 class="phpdocumentor-sidebar__category-header">Packages</h2>
<h4 class="phpdocumentor-sidebar__root-namespace">
<a href="packages/Application.html" class="">Application</a>
</h4>
</section>
<section class="phpdocumentor-sidebar__category">
<h2 class="phpdocumentor-sidebar__category-header">Reports</h2>
<h3 class="phpdocumentor-sidebar__root-package"><a href="reports/deprecated.html">Deprecated</a></h3>
<h3 class="phpdocumentor-sidebar__root-package"><a href="reports/errors.html">Errors</a></h3>
<h3 class="phpdocumentor-sidebar__root-package"><a href="reports/markers.html">Markers</a></h3>
</section>
<section class="phpdocumentor-sidebar__category">
<h2 class="phpdocumentor-sidebar__category-header">Indices</h2>
<h3 class="phpdocumentor-sidebar__root-package"><a href="indices/files.html">Files</a></h3>
</section>
</aside>
<div class="phpdocumentor-column -eight phpdocumentor-content">
<ul class="phpdocumentor-breadcrumbs">
<li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan.html">chillerlan</a></li>
<li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan-qrcode.html">QRCode</a></li>
<li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan-qrcode-detector.html">Detector</a></li>
</ul>
<article class="phpdocumentor-element -class">
<h2 class="phpdocumentor-content__title">
Detector
<div class="phpdocumentor-element__package">
in package
<ul class="phpdocumentor-breadcrumbs">
<li class="phpdocumentor-breadcrumb"><a href="packages/Application.html">Application</a></li>
</ul>
</div>
</h2>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">26</span>
</aside>
<p class="phpdocumentor-summary">Encapsulates logic that can detect a QR Code in an image, even if the QR Code
is rotated or skewed, or partially obscured.</p>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">author</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<section class="phpdocumentor-description"><p>Sean Owen</p>
</section>
</dd>
</dl>
<h3 id="toc">
Table of Contents
<a href="#toc" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<dl class="phpdocumentor-table-of-contents">
<dt class="phpdocumentor-table-of-contents__entry -property -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#property_matrix">$matrix</a>
<span>
&nbsp;: <a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a> </span>
</dt>
<dd></dd>
<dt class="phpdocumentor-table-of-contents__entry -method -public">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method___construct">__construct()</a>
<span>
&nbsp;: mixed </span>
</dt>
<dd>Detector constructor.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -public">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_detect">detect()</a>
<span>
&nbsp;: <a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a> </span>
</dt>
<dd>Detects a QR Code in an image.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_calculateModuleSize">calculateModuleSize()</a>
<span>
&nbsp;: float </span>
</dt>
<dd>Computes an average estimated module size based on estimated derived from the positions
of the three finder patterns.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_calculateModuleSizeOneWay">calculateModuleSizeOneWay()</a>
<span>
&nbsp;: float </span>
</dt>
<dd>Estimates module size based on two finder patterns -- it uses
#sizeOfBlackWhiteBlackRunBothWays(int, int, int, int) to figure the
width of each, measuring along the axis between their centers.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_computeDimension">computeDimension()</a>
<span>
&nbsp;: int </span>
</dt>
<dd>Computes the dimension (number of modules on a size) of the QR Code based on the position
of the finder patterns and estimated module size.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_createTransform">createTransform()</a>
<span>
&nbsp;: <a href="classes/chillerlan-QRCode-Detector-PerspectiveTransform.html"><abbr title="\chillerlan\QRCode\Detector\PerspectiveTransform">PerspectiveTransform</abbr></a> </span>
</dt>
<dd></dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_findAlignmentInRegion">findAlignmentInRegion()</a>
<span>
&nbsp;: <a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null </span>
</dt>
<dd>Attempts to locate an alignment pattern in a limited region of the image, which is
guessed to contain it.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_sizeOfBlackWhiteBlackRun">sizeOfBlackWhiteBlackRun()</a>
<span>
&nbsp;: float </span>
</dt>
<dd>This method traces a line from a po$in the image, in the direction towards another point.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_sizeOfBlackWhiteBlackRunBothWays">sizeOfBlackWhiteBlackRunBothWays()</a>
<span>
&nbsp;: float </span>
</dt>
<dd>See #sizeOfBlackWhiteBlackRun(int, int, int, int); computes the total width of
a finder pattern by looking for a black-white-black run from the center in the direction
of another po$(another finder pattern center), and in the opposite direction too.</dd>
</dl>
<section class="phpdocumentor-properties">
<h3 class="phpdocumentor-elements__header" id="properties">
Properties
<a href="classes/chillerlan-QRCode-Detector-Detector.html#properties" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<article
class="
phpdocumentor-element
-property
-private
"
>
<h4 class="phpdocumentor-element__name" id="property_matrix">
$matrix
<a href="classes/chillerlan-QRCode-Detector-Detector.html#property_matrix" class="headerlink"><i class="fas fa-link"></i></a>
<span class="phpdocumentor-element__modifiers">
</span>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">28</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type"><a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a></span>
<span class="phpdocumentor-signature__name">$matrix</span>
</code>
<section class="phpdocumentor-description"></section>
<section class="phpdocumentor-description"></section>
</article>
</section>
<section class="phpdocumentor-methods">
<h3 class="phpdocumentor-elements__header" id="methods">
Methods
<a href="classes/chillerlan-QRCode-Detector-Detector.html#methods" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<article
class="phpdocumentor-element
-method
-public
"
>
<h4 class="phpdocumentor-element__name" id="method___construct">
__construct()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method___construct" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">33</span>
</aside>
<p class="phpdocumentor-summary">Detector constructor.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">public</span>
<span class="phpdocumentor-signature__name">__construct</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Decoder-LuminanceSourceInterface.html"><abbr title="\chillerlan\QRCode\Decoder\LuminanceSourceInterface">LuminanceSourceInterface</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$source</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">mixed</span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$source</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Decoder-LuminanceSourceInterface.html"><abbr title="\chillerlan\QRCode\Decoder\LuminanceSourceInterface">LuminanceSourceInterface</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">mixed</span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-public
"
>
<h4 class="phpdocumentor-element__name" id="method_detect">
detect()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_detect" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">40</span>
</aside>
<p class="phpdocumentor-summary">Detects a QR Code in an image.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">public</span>
<span class="phpdocumentor-signature__name">detect</span><span>(</span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a></span></code>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a></span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_calculateModuleSize">
calculateModuleSize()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_calculateModuleSize" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">82</span>
</aside>
<p class="phpdocumentor-summary">Computes an average estimated module size based on estimated derived from the positions
of the three finder patterns.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">calculateModuleSize</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$topLeft</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$topRight</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$bottomLeft</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$topLeft</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$topRight</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$bottomLeft</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">throws</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-Detector-QRCodeDetectorException.html"><abbr title="\chillerlan\QRCode\Detector\QRCodeDetectorException">QRCodeDetectorException</abbr></a></span>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float</span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_calculateModuleSizeOneWay">
calculateModuleSizeOneWay()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_calculateModuleSizeOneWay" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">101</span>
</aside>
<p class="phpdocumentor-summary">Estimates module size based on two finder patterns -- it uses
#sizeOfBlackWhiteBlackRunBothWays(int, int, int, int) to figure the
width of each, measuring along the axis between their centers.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">calculateModuleSizeOneWay</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$a</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$b</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$a</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$b</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float</span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_computeDimension">
computeDimension()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_computeDimension" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">239</span>
</aside>
<p class="phpdocumentor-summary">Computes the dimension (number of modules on a size) of the QR Code based on the position
of the finder patterns and estimated module size.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">computeDimension</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$nw</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$ne</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$sw</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$size</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">int</span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$nw</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$ne</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$sw</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$size</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">throws</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-Detector-QRCodeDetectorException.html"><abbr title="\chillerlan\QRCode\Detector\QRCodeDetectorException">QRCodeDetectorException</abbr></a></span>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">int</span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_createTransform">
createTransform()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_createTransform" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">308</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">createTransform</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$nw</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$ne</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$sw</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$size</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$ap</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-PerspectiveTransform.html"><abbr title="\chillerlan\QRCode\Detector\PerspectiveTransform">PerspectiveTransform</abbr></a></span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$nw</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$ne</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$sw</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$size</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$ap</span>
: <span class="phpdocumentor-signature__argument__return-type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a></span>
= <span class="phpdocumentor-signature__argument__default-value">null</span> </dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-PerspectiveTransform.html"><abbr title="\chillerlan\QRCode\Detector\PerspectiveTransform">PerspectiveTransform</abbr></a></span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_findAlignmentInRegion">
findAlignmentInRegion()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_findAlignmentInRegion" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">274</span>
</aside>
<p class="phpdocumentor-summary">Attempts to locate an alignment pattern in a limited region of the image, which is
guessed to contain it.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">findAlignmentInRegion</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$overallEstModuleSize</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$estAlignmentX</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$estAlignmentY</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$allowanceFactor</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null</span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$overallEstModuleSize</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>estimated module size so far</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$estAlignmentX</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>x coordinate of center of area probably containing alignment pattern</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$estAlignmentY</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>y coordinate of above</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$allowanceFactor</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>number of pixels in all directions to search from the center</p>
</section>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null</span>
&mdash;
<section class="phpdocumentor-description"><p>if found, or null otherwise</p>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_sizeOfBlackWhiteBlackRun">
sizeOfBlackWhiteBlackRun()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_sizeOfBlackWhiteBlackRun" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">168</span>
</aside>
<p class="phpdocumentor-summary">This method traces a line from a po$in the image, in the direction towards another point.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">sizeOfBlackWhiteBlackRun</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$fromX</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$fromY</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$toX</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$toY</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>
<section class="phpdocumentor-description"><p>It begins in a black region, and keeps going until it finds white, then black, then white again.
It reports the distance from the start to this point.</p>
<p>This is used when figuring out how wide a finder pattern is, when the finder pattern
may be skewed or rotated.</p>
</section>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$fromX</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$fromY</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$toX</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$toY</span>
: <span class="phpdocumentor-signature__argument__return-type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float</span>
&mdash;
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_sizeOfBlackWhiteBlackRunBothWays">
sizeOfBlackWhiteBlackRunBothWays()
<a href="classes/chillerlan-QRCode-Detector-Detector.html#method_sizeOfBlackWhiteBlackRunBothWays" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/Detector.php"><a href="files/src-detector-detector.html"><abbr title="src/Detector/Detector.php">Detector.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">125</span>
</aside>
<p class="phpdocumentor-summary">See #sizeOfBlackWhiteBlackRun(int, int, int, int); computes the total width of
a finder pattern by looking for a black-white-black run from the center in the direction
of another po$(another finder pattern center), and in the opposite direction too.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">sizeOfBlackWhiteBlackRunBothWays</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$fromX</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$fromY</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$toX</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$toY</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$fromX</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$fromY</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$toX</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$toY</span>
: <span class="phpdocumentor-signature__argument__return-type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"></section>
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">noinspection</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<section class="phpdocumentor-description"><p>DuplicatedCode</p>
</section>
</dd>
</dl>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float</span>
&mdash;
</article>
</section>
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<h2 class="phpdocumentor-search-results__title">Search results</h2>
<button class="phpdocumentor-search-results__close"><i class="fas fa-times"></i></button>
</header>
<section class="phpdocumentor-search-results__body">
<ul class="phpdocumentor-search-results__entries"></ul>
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