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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<tr><td colspan="5" class="shortcuts"><nobr><a href="#id2553048" class="shortcut">Top</a>
 | 
<a href="#id2579755" class="shortcut">Description</a></nobr></td></tr>
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<div class="refentry" lang="en">
<a name="libgimp-gimpconvert"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id2553048"></a><span class="refentrytitle">gimpconvert</span>
</h2>
<p>gimpconvert — Conversions between RGB, indexed, and grayscale modes.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
gboolean <a href="libgimp-gimpconvert.html#gimp-image-convert-rgb">gimp_image_convert_rgb</a> (gint32 image_ID);
gboolean <a href="libgimp-gimpconvert.html#gimp-image-convert-grayscale">gimp_image_convert_grayscale</a> (gint32 image_ID);
gboolean <a href="libgimp-gimpconvert.html#gimp-image-convert-indexed">gimp_image_convert_indexed</a> (gint32 image_ID,
<a href="libgimp-gimpenums.html#GimpConvertDitherType">GimpConvertDitherType</a> dither_type,
<a href="libgimp-gimpenums.html#GimpConvertPaletteType">GimpConvertPaletteType</a> palette_type,
gint num_cols,
gboolean alpha_dither,
gboolean remove_unused,
const gchar *palette);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id2579755"></a><h2>Description</h2>
<p>
Conversions between RGB, indexed, and grayscale modes.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2580591"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id2580601"></a><h3>
<a name="gimp-image-convert-rgb"></a>gimp_image_convert_rgb ()</h3>
<a class="indexterm" name="id2580612"></a><pre class="programlisting">gboolean gimp_image_convert_rgb (gint32 image_ID);</pre>
<p>
Convert specified image to RGB color
</p>
<p>
This procedure converts the specified image to RGB color. This
process requires an image of type GIMP_GRAY or GIMP_INDEXED. No
image content is lost in this process aside from the colormap for an
indexed image.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>image_ID</code></em> :</span></td>
<td> The image.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE on success.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2580679"></a><h3>
<a name="gimp-image-convert-grayscale"></a>gimp_image_convert_grayscale ()</h3>
<a class="indexterm" name="id2580690"></a><pre class="programlisting">gboolean gimp_image_convert_grayscale (gint32 image_ID);</pre>
<p>
Convert specified image to grayscale (256 intensity levels)
</p>
<p>
This procedure converts the specified image to grayscale with 8 bits
per pixel (256 intensity levels). This process requires an image of
type GIMP_RGB or GIMP_INDEXED.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>image_ID</code></em> :</span></td>
<td> The image.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE on success.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2580756"></a><h3>
<a name="gimp-image-convert-indexed"></a>gimp_image_convert_indexed ()</h3>
<a class="indexterm" name="id2580768"></a><pre class="programlisting">gboolean gimp_image_convert_indexed (gint32 image_ID,
<a href="libgimp-gimpenums.html#GimpConvertDitherType">GimpConvertDitherType</a> dither_type,
<a href="libgimp-gimpenums.html#GimpConvertPaletteType">GimpConvertPaletteType</a> palette_type,
gint num_cols,
gboolean alpha_dither,
gboolean remove_unused,
const gchar *palette);</pre>
<p>
Convert specified image to and Indexed image
</p>
<p>
This procedure converts the specified image to 'indexed' color. This
process requires an image of type GIMP_GRAY or GIMP_RGB. The
'palette_type' specifies what kind of palette to use, A type of '0'
means to use an optimal palette of 'num_cols' generated from the
colors in the image. A type of '1' means to re-use the previous
palette (not currently implemented). A type of '2' means to use the
so-called WWW-optimized palette. Type '3' means to use only black
and white colors. A type of '4' means to use a palette from the gimp
palettes directories. The 'dither type' specifies what kind of
dithering to use. '0' means no dithering, '1' means standard
Floyd-Steinberg error diffusion, '2' means Floyd-Steinberg error
diffusion with reduced bleeding, '3' means dithering based on pixel
location ('Fixed' dithering).</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>image_ID</code></em> :</span></td>
<td> The image.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>dither_type</code></em> :</span></td>
<td> The dither type to use.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>palette_type</code></em> :</span></td>
<td> The type of palette to use.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>num_cols</code></em> :</span></td>
<td> The number of colors to quantize to, ignored unless (palette_type == GIMP_MAKE_PALETTE).
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>alpha_dither</code></em> :</span></td>
<td> Dither transparency to fake partial opacity.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>remove_unused</code></em> :</span></td>
<td> Remove unused or duplicate colour entries from final palette, ignored if (palette_type == GIMP_MAKE_PALETTE).
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>palette</code></em> :</span></td>
<td> The name of the custom palette to use, ignored unless (palette_type == GIMP_CUSTOM_PALETTE).
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE on success.
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
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