File: sane-xsane-histogram-doc.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <meta name="GENERATOR" content="Mozilla/4.74 [en] (X11; U; Linux 2.2.18 i686) [Netscape]">
   <meta name="Author" content="Oliver Rauch">
   <meta name="Description" content="scan, photocopy and fax frontend for SANE">
   <title>XSane - Histogram window</title>
</head>
<body text="#000000" bgcolor="#FFFFFF" link="#0000EF" vlink="#51188E" alink="#FF0000">


<table>
<td width=200>
<img SRC="xsane-logo.jpg" alt="XSane-logo" hspace=30 align=TOP>
</td>
<td>
<h1><dd><font color="#009900">Histogram window</font></dd></h1>
</td>
</table>


<hr WIDTH="100%">

<table>
<td valign=TOP width="200" bgcolor="#E0E0BA">
<br>
<a href="sane-xsane-doc.html">Index</a>
<br>
<br>
<font color="#000000">XSane mode:</font>
<img SRC="xsane-target.jpg" alt="xsane-target">
<ul>
<li><a href="sane-xsane-viewer-doc.html">Viewer mode</a></li>
<li><a href="sane-xsane-save-doc.html">Save mode</a></li>
<li><a href="sane-xsane-copy-doc.html">Copy mode</a></li>
<li><a href="sane-xsane-multipage-doc.html">Multipage mode</a></li>
<li><a href="sane-xsane-fax-doc.html">Fax mode</a></li>
<li><a href="sane-xsane-email-doc.html">E-mail mode</a></li>
<li><a href="sane-xsane-gimp-doc.html">Gimp plugin</a></li>
</ul>
<br>
<a href="sane-xsane-scan-options-doc.html">Scan options</a>
<br>
<br>
<a href="sane-xsane-medium-definition-doc.html">Medium selection</a>
<br>
<br>
<a href="sane-xsane-color-management-doc.html">Color management</a>
<br>
<br>
<br>
<a href="sane-xsane-color-correction-doc.html">Color correction:</a>
<ul>
<li><a href="sane-xsane-color-correction-doc.html#GAMMA">Gamma correction</a></li>
<li><a href="sane-xsane-color-correction-doc.html#BRIGHTNESS">Brightness</a></li>
<li><a href="sane-xsane-color-correction-doc.html#CONTRAST">Contrast</a></li>
<li><a href="sane-xsane-color-correction-doc.html#THRESHOLD">Threshold</a></li>
<li><a href="sane-xsane-color-correction-doc.html#RGB_DEFAULT">RGB default</a></li>
<li><a href="sane-xsane-color-correction-doc.html#NEGATIVE">Negative</a></li>
<li><a href="sane-xsane-color-correction-doc.html#AUTOENHANCEMENT">Autoenhancement</a></li>
<li><a href="sane-xsane-color-correction-doc.html#ENHANCEMENT_DEFAULT">Default</a></li>
<li><a href="sane-xsane-color-correction-doc.html#RESTORE_ENHANCEMENT">Restore</a></li>
<li><a href="sane-xsane-color-correction-doc.html#STORE_ENHANCEMENT">Store</a></li>
<li><a href="sane-xsane-histogram-doc.html">Histogram window</a></li>
<li><a href="sane-xsane-preview-doc.html#PIPETTE_WHITE">Pipette functions</a></li>
</ul>
<br>
<a href="sane-xsane-standard-doc.html">Standard options window</a>
<br>
<br>
<br>
<a href="sane-xsane-advanced-doc.html">Advanced options window</a>
<br>
<br>
<br>
<a href="sane-xsane-preview-doc.html">Preview:</a>
<ul>
<li><a href="sane-xsane-preview-doc.html#PIPETTE_WHITE">Pipette white</a></li>
<li><a href="sane-xsane-preview-doc.html#PIPETTE_GRAY">Pipette gray</a></li>
<li><a href="sane-xsane-preview-doc.html#PIPETTE_BLACK">Pipette black</a></li>
<li><a href="sane-xsane-preview-doc.html#UNZOOM">Unzoom</a></li>
<li><a href="sane-xsane-preview-doc.html#ZOOM_OUT">Zoom out</a></li>
<li><a href="sane-xsane-preview-doc.html#ZOOM_IN">Zoom in</a></li>
<li><a href="sane-xsane-preview-doc.html#UNDO_ZOOM">Undo zoom</a></li>
<li><a href="sane-xsane-preview-doc.html#AUTOSELECT">Autoselect scanarea</a></li>
<li><a href="sane-xsane-preview-doc.html#AUTORAISE">Autoraise scanarea</a></li>
<li><a href="sane-xsane-preview-doc.html#SELECT_VISIBLE_AREA">Select visible area</a></li>
<li><a href="sane-xsane-preview-doc.html#DELETE_PREVIEW_CACHE">Delete preview cache</a></li>
<li><a href="sane-xsane-preview-doc.html#PRESET_AREA">Preset area</a></li>
<li><a href="sane-xsane-preview-doc.html#ROTATION">Rotation</a></li>
<li><a href="sane-xsane-preview-doc.html#ASPECT_RATIO">Aspect ratio</a></li>
<li><a href="sane-xsane-preview-doc.html#RGB_VALUES">RGB values</a></li>
<li><a href="sane-xsane-preview-doc.html#SELECT_SCAN_AREA">Select scanarea</a></li>
<li><a href="sane-xsane-preview-doc.html#MOVE_SCAN_AREA">Move scanarea</a></li>
</ul>
<br>
<a href="sane-xsane-batch-scan-doc.html">Batch scan:</a>
<ul>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_EMPTY">Empty batch list</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_OPEN">Open batch list</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_SAVE">Save batch list</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_ADD">Add area to list</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_DELETE">Remove selection</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_RENAME">Rename selection</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_ROTATE">Rotate image</a></li>
<li><a href="sane-xsane-batch-scan-doc.html#BATCH_SCAN_MIRROR">Mirror image</a></li>
</ul>
<br>
<font color="#000000">Setup:</font>
<ul>
<li><a href="sane-xsane-setup-copy-doc.html">Copy setup</a></li>
<li><a href="sane-xsane-setup-display-doc.html">Display setup</a></li>
<li><a href="sane-xsane-setup-enhancement-doc.html">Enhancement setup</a></li>
<li><a href="sane-xsane-setup-fax-doc.html">Fax setup</a></li>
<li><a href="sane-xsane-setup-filetype-doc.html">Filetype setup</a></li>
<li><a href="sane-xsane-setup-email-doc.html">E-mail setup</a></li>
<li><a href="sane-xsane-setup-save-doc.html">Saving setup</a></li>
<li><a href="sane-xsane-setup-color-management-doc.html">Color management setup</a></li>
</ul>
</td>



<td VALIGN=TOP BGCOLOR="#FFFFFF">
<br>
<center><img SRC="xsane-histogram.jpg" height=366 width=278></center>
<br>
<br>
<br>
<blockquote>
The histogram shows the color density of the area that is selected
in the preview window. The top histogram represents the scanned raw image,
the bottom histogram represents the enhanced image. In grayscale mode,
there are three sliders in the gray range. The black slider defines the
black point, the white silder the white point and the gray slider the gray
point (gamma). If the <i>rgb default button</i> (in the xsane main window)
is not selected in color mode there are also sliders in the red, the green
and the blue range. In this case a move of a slider of the gray range also
moves the sliders of the color ranges.
<p>
The <i>I</i>, <i>R</i>, <i>G</i> and <i>B</i> buttons define if the
<i>intensity</i>, <i>red</i>, <i>green</i> and/or <i>blue</i>
histogram components are shown.
<p>
The curve-type button defines if the histogram curves are shown with
pixels or with lines.
<p>
The <i>LOG</i> button defines if the densities are displayed linear
or logarithmical.
</blockquote>

</td>
</table>

<hr WIDTH="100%">

<blockquote>
<font size=+1>Author: <a href="mailto:Oliver.Rauch@xsane.org">Oliver Rauch</a></font>
</blockquote>

</body>
</html>