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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.opencv.android</a></div>
<h1 title="Class Utils" class="title">Class Utils</h1>
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<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
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<div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">Utils</span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<h2>Constructor Summary</h2>
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<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">Utils</a>()</code></div>
<div class="col-last even-row-color">&nbsp;</div>
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<!-- ========== METHOD SUMMARY =========== -->
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<h2>Method Summary</h2>
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<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#bitmapToMat(android.graphics.Bitmap,org.opencv.core.Mat)" class="member-name-link">bitmapToMat</a><wbr>(android.graphics.Bitmap&nbsp;bmp,
<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Short form of the bitmapToMat(bmp, mat, unPremultiplyAlpha=false).</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#bitmapToMat(android.graphics.Bitmap,org.opencv.core.Mat,boolean)" class="member-name-link">bitmapToMat</a><wbr>(android.graphics.Bitmap&nbsp;bmp,
<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat,
boolean&nbsp;unPremultiplyAlpha)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Converts Android Bitmap to OpenCV Mat.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#exportResource(android.content.Context,int)" class="member-name-link">exportResource</a><wbr>(android.content.Context&nbsp;context,
int&nbsp;resourceId)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#exportResource(android.content.Context,int,java.lang.String)" class="member-name-link">exportResource</a><wbr>(android.content.Context&nbsp;context,
int&nbsp;resourceId,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;dirname)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../core/Mat.html" title="class in org.opencv.core">Mat</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#loadResource(android.content.Context,int)" class="member-name-link">loadResource</a><wbr>(android.content.Context&nbsp;context,
int&nbsp;resourceId)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../core/Mat.html" title="class in org.opencv.core">Mat</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#loadResource(android.content.Context,int,int)" class="member-name-link">loadResource</a><wbr>(android.content.Context&nbsp;context,
int&nbsp;resourceId,
int&nbsp;flags)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#matToBitmap(org.opencv.core.Mat,android.graphics.Bitmap)" class="member-name-link">matToBitmap</a><wbr>(<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat,
android.graphics.Bitmap&nbsp;bmp)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Short form of the <b>matToBitmap(mat, bmp, premultiplyAlpha=false)</b></div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#matToBitmap(org.opencv.core.Mat,android.graphics.Bitmap,boolean)" class="member-name-link">matToBitmap</a><wbr>(<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat,
android.graphics.Bitmap&nbsp;bmp,
boolean&nbsp;premultiplyAlpha)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
<div class="block">Converts OpenCV Mat to Android Bitmap.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;()">
<h3>Utils</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">Utils</span>()</div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
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<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="exportResource(android.content.Context,int)">
<h3>exportResource</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">exportResource</span><wbr><span class="parameters">(android.content.Context&nbsp;context,
int&nbsp;resourceId)</span></div>
</section>
</li>
<li>
<section class="detail" id="exportResource(android.content.Context,int,java.lang.String)">
<h3>exportResource</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">exportResource</span><wbr><span class="parameters">(android.content.Context&nbsp;context,
int&nbsp;resourceId,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;dirname)</span></div>
</section>
</li>
<li>
<section class="detail" id="loadResource(android.content.Context,int)">
<h3>loadResource</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="../core/Mat.html" title="class in org.opencv.core">Mat</a></span>&nbsp;<span class="element-name">loadResource</span><wbr><span class="parameters">(android.content.Context&nbsp;context,
int&nbsp;resourceId)</span>
throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div>
<dl class="notes">
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="loadResource(android.content.Context,int,int)">
<h3>loadResource</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="../core/Mat.html" title="class in org.opencv.core">Mat</a></span>&nbsp;<span class="element-name">loadResource</span><wbr><span class="parameters">(android.content.Context&nbsp;context,
int&nbsp;resourceId,
int&nbsp;flags)</span>
throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div>
<dl class="notes">
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="bitmapToMat(android.graphics.Bitmap,org.opencv.core.Mat,boolean)">
<h3>bitmapToMat</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">bitmapToMat</span><wbr><span class="parameters">(android.graphics.Bitmap&nbsp;bmp,
<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat,
boolean&nbsp;unPremultiplyAlpha)</span></div>
<div class="block">Converts Android Bitmap to OpenCV Mat.
<p>
This function converts an Android Bitmap image to the OpenCV Mat.
<br>'ARGB_8888' and 'RGB_565' input Bitmap formats are supported.
<br>The output Mat is always created of the same size as the input Bitmap and of the 'CV_8UC4' type,
it keeps the image in RGBA format.
<br>This function throws an exception if the conversion fails.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>bmp</code> - is a valid input Bitmap object of the type 'ARGB_8888' or 'RGB_565'.</dd>
<dd><code>mat</code> - is a valid output Mat object, it will be reallocated if needed, so it may be empty.</dd>
<dd><code>unPremultiplyAlpha</code> - is a flag, that determines, whether the bitmap needs to be converted from alpha premultiplied format (like Android keeps 'ARGB_8888' ones) to regular one; this flag is ignored for 'RGB_565' bitmaps.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="bitmapToMat(android.graphics.Bitmap,org.opencv.core.Mat)">
<h3>bitmapToMat</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">bitmapToMat</span><wbr><span class="parameters">(android.graphics.Bitmap&nbsp;bmp,
<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat)</span></div>
<div class="block">Short form of the bitmapToMat(bmp, mat, unPremultiplyAlpha=false).</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>bmp</code> - is a valid input Bitmap object of the type 'ARGB_8888' or 'RGB_565'.</dd>
<dd><code>mat</code> - is a valid output Mat object, it will be reallocated if needed, so Mat may be empty.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="matToBitmap(org.opencv.core.Mat,android.graphics.Bitmap,boolean)">
<h3>matToBitmap</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">matToBitmap</span><wbr><span class="parameters">(<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat,
android.graphics.Bitmap&nbsp;bmp,
boolean&nbsp;premultiplyAlpha)</span></div>
<div class="block">Converts OpenCV Mat to Android Bitmap.
<p>
<br>This function converts an image in the OpenCV Mat representation to the Android Bitmap.
<br>The input Mat object has to be of the types 'CV_8UC1' (gray-scale), 'CV_8UC3' (RGB) or 'CV_8UC4' (RGBA).
<br>The output Bitmap object has to be of the same size as the input Mat and of the types 'ARGB_8888' or 'RGB_565'.
<br>This function throws an exception if the conversion fails.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>mat</code> - is a valid input Mat object of types 'CV_8UC1', 'CV_8UC3' or 'CV_8UC4'.</dd>
<dd><code>bmp</code> - is a valid Bitmap object of the same size as the Mat and of type 'ARGB_8888' or 'RGB_565'.</dd>
<dd><code>premultiplyAlpha</code> - is a flag, that determines, whether the Mat needs to be converted to alpha premultiplied format (like Android keeps 'ARGB_8888' bitmaps); the flag is ignored for 'RGB_565' bitmaps.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="matToBitmap(org.opencv.core.Mat,android.graphics.Bitmap)">
<h3>matToBitmap</h3>
<div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">matToBitmap</span><wbr><span class="parameters">(<a href="../core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;mat,
android.graphics.Bitmap&nbsp;bmp)</span></div>
<div class="block">Short form of the <b>matToBitmap(mat, bmp, premultiplyAlpha=false)</b></div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>mat</code> - is a valid input Mat object of the types 'CV_8UC1', 'CV_8UC3' or 'CV_8UC4'.</dd>
<dd><code>bmp</code> - is a valid Bitmap object of the same size as the Mat and of type 'ARGB_8888' or 'RGB_565'.</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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