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git-svn-id: https://svn.php.net/repository/phpdoc/es/trunk@334774 c90b9560-bf6c-de11-be94-00142212c4b1
151 lines
4.1 KiB
XML
151 lines
4.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 14af302c9c0e561fa6f9cdd956268758ba9a89c5 Maintainer: seros Status: ready -->
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<refentry xml:id="function.imageconvolution" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>imageconvolution</refname>
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<refpurpose>Aplicar una matriz de convolución de 3x3, usando coeficiente e índice</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>imageconvolution</methodname>
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<methodparam><type>resource</type><parameter>image</parameter></methodparam>
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<methodparam><type>array</type><parameter>matrix</parameter></methodparam>
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<methodparam><type>float</type><parameter>div</parameter></methodparam>
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<methodparam><type>float</type><parameter>offset</parameter></methodparam>
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</methodsynopsis>
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<para>
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Aplica una matriz de convolución a la imagen, usando el coeficiente y el índice
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dados.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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&gd.image.description;
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<varlistentry>
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<term><parameter>matrix</parameter></term>
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<listitem>
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<para>
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Una matriz de 3x3: una matriz de tres matrices de tres valores float.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>div</parameter></term>
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<listitem>
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<para>
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El divisor del resultado de la convolución, usado para normalización.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>offset</parameter></term>
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<listitem>
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<para>
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Índice de color.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&return.success;
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Poner en relieve el logotipo de PHP.net</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$imagen = imagecreatefromgif('http://www.php.net/images/php.gif');
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$relieve = array(array(2, 0, 0), array(0, -1, 0), array(0, 0, -1));
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imageconvolution($imagen, $relieve, 1, 127);
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header('Content-Type: image/png');
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imagepng($imagen, null, 9);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<mediaobject>
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<alt>Salida del ejemplo : Poner en relieve el logotipo de PHP.net</alt>
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<imageobject>
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<imagedata fileref="en/reference/image/figures/imageconvolution_emboss.png"/>
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</imageobject>
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</mediaobject>
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</example>
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<example>
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<title>Borrosidad gaussiana</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$imagen = imagecreatetruecolor(180,40);
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// Escribe el texto y aplica una borrosidad gaussiana a la imagen
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imagestring($imagen, 5, 10, 8, 'Gaussian Blur Text', 0x00ff00);
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$gaussiana = array(array(1.0, 2.0, 1.0), array(2.0, 4.0, 2.0), array(1.0, 2.0, 1.0));
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imageconvolution($imagen, $gaussiana, 16, 0);
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// Reescribe el texto para compararlo
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imagestring($imagen, 5, 10, 18, 'Gaussian Blur Text', 0x00ff00);
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header('Content-Type: image/png');
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imagepng($imagen, null, 9);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<mediaobject>
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<alt>Salida del ejemplo : Borrosidad gaussiana</alt>
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<imageobject>
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<imagedata fileref="en/reference/image/figures/imageconvolution_gaussian.png"/>
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</imageobject>
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</mediaobject>
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</example>
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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¬e.bundled.gd;
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>imagefilter</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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