https://www.cloudcompare.org/doc/wiki/index.php?action=history&feed=atom&title=Colors%5CLevelsColors\Levels - Revision history2026-05-06T16:12:23ZRevision history for this page on the wikiMediaWiki 1.44.0https://www.cloudcompare.org/doc/wiki/index.php?title=Colors%5CLevels&diff=46647&oldid=prevDaniel: /* Description */2015-02-17T21:52:44Z<p><span class="autocomment">Description</span></p>
<p><b>New page</b></p><div>== Menu ==<br />
<br />
This tool is accessible via the 'Edit > Colors > Levels' menu.<br />
<br />
== Description ==<br />
<br />
Edit the color histogram. Similar to Photoshop's ''Levels'' method.<br />
<br />
[[Image:Cc_color_levels_dialog.jpg|frame|center|Edit > Colors > Levels dialog]]<br />
<br />
You can edit either all channels at once (RGB) or one channel at a time (Red, Green or Blue).<br />
<br />
By default, the main usage of this tool is to increase the color dynamics. To do this you'll have to ''zoom in'' the global histogram. The color values falling inside the sub-range in which most of the information is will be extended so as to use the full [0-255] range.<br />
<br />
In practical, once you've identified the smallest interval where most of the information lies (e.g. [40-240] here), set this new interval as 'Input levels' then click on 'Apply'.<br />
<br />
Advanced users can also change the 'Output levels'. In which case the 'Input' interval will be remapped to the 'Output' one.<br />
<br />
Note: the dialog uses a standard histogram display, so you can click on it to get information on the histogram bin hovered by the mouse</div>Daniel