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<title>(r1.1 vs. r1.3) VideoHistogram &lt; Cinelerra &lt; TWiki</title>
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<div class="twikiMiddleContainer"><div class="twikiMain"><div class="twikiSearchResults"><div class="twikiSearchResultsHeader">&nbsp;<tt><b>&lt;&lt;O&gt;&gt;</b></tt>&nbsp; Difference Topic
		<b><a href="../../view/Cinelerra/VideoHistogram">VideoHistogram</a></b>
		(<a href="http://www.ftconsult.com/twiki/bin/view/Cinelerra/VideoHistogram?rev=r1.3">r1.3</a> - 16&nbsp;Jan&nbsp;2004 - <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a>)</div>
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<tr><td bgcolor="#D0FFD0" class="twikiDiffChangedHeader" colspan ="9"><b> Changed: </b></td></tr>
<tr><td bgcolor="#ff9999" class="twikiDiffDeletedMarker" valign="top" width="1%">&lt;<br />&lt;</td>
<td class="twikiDiffDeletedText">
<table border="1" cellspacing="1" cellpadding="0">
<tr><th class="twikiFirstCol" bgcolor="#99CCCC"> <strong>META TOPICPARENT</strong> </th><td colspan="2" bgcolor="#FFFFCC"> <a class="twikiLink" href="../../view/Cinelerra/VideoEffect">VideoEffects</a> </td></tr>
</table>
</td></tr>
<tr><td bgcolor="#ccccff" class="twikiDiffAddedMarker" valign="top" width="1%">&gt;<br />&gt;</td>
<td class="twikiDiffAddedText">
<table border="1" cellspacing="1" cellpadding="0">
<tr><th class="twikiFirstCol" bgcolor="#99CCCC"> <strong>META TOPICPARENT</strong> </th><td colspan="2" bgcolor="#FFFFCC"> <a class="twikiLink" href="../../view/Cinelerra/VideoEffect">VideoEffect</a> </td></tr>
</table>
</td></tr>
<tr><td valign="top" bgcolor="#ffffff" class="twikiDiffUnchangedText" width="1%"><br /></td>
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<h3><a name="VideoHistogram"> </a> <a class="twikiLink" href="../../view/Cinelerra/VideoHistogram">VideoHistogram</a> </h3>
<p />
This shows the number of occurances of each value of a certain <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">ColorChannel</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/ColorChannel?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. It is always performed in 16 bit <a class="twikiLink" href="../../view/Cinelerra/VideoFormats">RGB</a> regardless of the project <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">colorspace</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/Colorspace?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. Use the upper gradient to determine the range of input intensities to be expanded to the output. Use the lower gradient to determine the range of output intensities to target the expansion to. Enable automatic mode to have the histogram calculate automatic input values for every frame. The threshold is only used in automatic mode and determines how sensitive to the upper and lower boundaries of the histogram the automatic gain should be. 
</td></tr>

</table></div><div class="twikiSearchResults"><div class="twikiSearchResultsHeader">&nbsp;<tt><b>&lt;&lt;O&gt;&gt;</b></tt>&nbsp; Difference Topic
		<b><a href="../../view/Cinelerra/VideoHistogram">VideoHistogram</a></b>
		(<a href="http://www.ftconsult.com/twiki/bin/view/Cinelerra/VideoHistogram?rev=r1.2">r1.2</a> - 07&nbsp;Jan&nbsp;2004 - <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a>)</div>
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<tr><td valign="top" bgcolor="#ffffff" class="twikiDiffUnchangedText" width="1%"><br /></td>
<td class="twikiDiffUnchangedText">
<table border="1" cellspacing="1" cellpadding="0">
<tr><th class="twikiFirstCol" bgcolor="#99CCCC"> <strong>META TOPICPARENT</strong> </th><td colspan="2" bgcolor="#FFFFCC"> <a class="twikiLink" href="../../view/Cinelerra/VideoEffect">VideoEffects</a> </td></tr>
</table>
<h3><a name="VideoHistogram"> </a> <a class="twikiLink" href="../../view/Cinelerra/VideoHistogram">VideoHistogram</a> </h3>
</td></tr>
<tr><td bgcolor="#D0FFD0" class="twikiDiffChangedHeader" colspan ="9"><b> Changed: </b></td></tr>
<tr><td bgcolor="#ff9999" class="twikiDiffDeletedMarker" valign="top" width="1%">&lt;<br />&lt;</td>
<td class="twikiDiffDeletedText">
This shows the number of occurances of each value of a certain <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">ColorChannel</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/ColorChannel?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. It is always performed in 16 bit RGB regardless of the project <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">colorspace</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/Colorspace?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. Use the upper gradient to determine the range of input intensities to be expanded to the output. Use the lower gradient to determine the range of output intensities to target the expansion to. Enable automatic mode to have the histogram calculate automatic input values for every frame. The threshold is only used in automatic mode and determines how sensitive to the upper and lower boundaries of the histogram the automatic gain should be. 
</td></tr>
<tr><td bgcolor="#ccccff" class="twikiDiffAddedMarker" valign="top" width="1%">&gt;<br />&gt;</td>
<td class="twikiDiffAddedText">
This shows the number of occurances of each value of a certain <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">ColorChannel</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/ColorChannel?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. It is always performed in 16 bit <a class="twikiLink" href="../../view/Cinelerra/VideoFormats">RGB</a> regardless of the project <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">colorspace</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/Colorspace?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. Use the upper gradient to determine the range of input intensities to be expanded to the output. Use the lower gradient to determine the range of output intensities to target the expansion to. Enable automatic mode to have the histogram calculate automatic input values for every frame. The threshold is only used in automatic mode and determines how sensitive to the upper and lower boundaries of the histogram the automatic gain should be. 
</td></tr>
<tr><td valign="top" bgcolor="#ffffff" class="twikiDiffUnchangedText" width="1%"><br /></td>
<td class="twikiDiffUnchangedText">
<p />
-- <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a> - 19 Dec 2003
<hr />
</td></tr>

</table></div><div class="twikiSearchResults"><div class="twikiSearchResultsHeader">&nbsp;<tt><b>&lt;&lt;O&gt;&gt;</b></tt>&nbsp; Difference Topic
		<b><a href="../../view/Cinelerra/VideoHistogram">VideoHistogram</a></b>
		(<a href="http://www.ftconsult.com/twiki/bin/view/Cinelerra/VideoHistogram?rev=r1.1">r1.1</a> - 19&nbsp;Dec&nbsp;2003 - <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a>)</div>
<table class="twikiDiffTable" width="100%" cellspacing="0">
<tr bgcolor="#eeeeee" class="twikiDiffLineNumberHeader"><th align="left" colspan="9">Line: 1 to 1</th></tr>
<tr><td bgcolor="#D0FFD0" class="twikiDiffAddedHeader" colspan ="9"><b> Added:   </b>
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<tr><td bgcolor="#ccccff" class="twikiDiffAddedMarker" valign="top" width="1%">&gt;<br />&gt;</td>
<td class="twikiDiffAddedText">
<table border="1" cellspacing="1" cellpadding="0">
<tr><th class="twikiFirstCol" bgcolor="#99CCCC"> <strong>META TOPICPARENT</strong> </th><td colspan="2" bgcolor="#FFFFCC"> <a class="twikiLink" href="../../view/Cinelerra/VideoEffect">VideoEffects</a> </td></tr>
</table>
<h3><a name="VideoHistogram"> </a> <a class="twikiLink" href="../../view/Cinelerra/VideoHistogram">VideoHistogram</a> </h3>
<p />
This shows the number of occurances of each value of a certain <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">ColorChannel</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/ColorChannel?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. It is always performed in 16 bit RGB regardless of the project <span class="twikiNewLink" style="background : #FFFFCE;"><font color="#0000FF">colorspace</font><a href="http://www.ftconsult.com/twiki/bin/edit/Cinelerra/Colorspace?topicparent=Cinelerra.VideoHistogram"><sup>?</sup></a></span>. Use the upper gradient to determine the range of input intensities to be expanded to the output. Use the lower gradient to determine the range of output intensities to target the expansion to. Enable automatic mode to have the histogram calculate automatic input values for every frame. The threshold is only used in automatic mode and determines how sensitive to the upper and lower boundaries of the histogram the automatic gain should be. 
<p />
-- <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a> - 19 Dec 2003
<hr />
</td></tr>

</table></div><div class="twikiTopicAction"><a href="../../view/Cinelerra/VideoHistogram">View topic</a>
 <span class="twikiSeparator">|</span> <a href="VideoHistogram">Diffs</a>  | <a href="http://www.ftconsult.com/twiki/bin/view/Cinelerra/VideoHistogram?rev=1.3">r1.3</a> | <a href="http://www.ftconsult.com/twiki/bin/rdiff/Cinelerra/VideoHistogram?rev1=1.3&rev2=1.2">&gt;</a> | <a href="http://www.ftconsult.com/twiki/bin/view/Cinelerra/VideoHistogram?rev=1.2">r1.2</a> | <a href="http://www.ftconsult.com/twiki/bin/rdiff/Cinelerra/VideoHistogram?rev1=1.2&rev2=1.1">&gt;</a> | <a href="http://www.ftconsult.com/twiki/bin/view/Cinelerra/VideoHistogram?rev=1.1">r1.1</a>
 <span class="twikiSeparator">|</span> <a href="http://www.ftconsult.com/twiki/bin/oops/Cinelerra/VideoHistogram?template=oopsmore&param1=1.3&param2=1.3">More</a>
</div><div class="twikiTopicInfo"><span class="twikiRevInfo twikiGrayText">Revision r1.1 - 19 Dec 2003 - 00:08 - <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a><br />
Revision r1.3 - 16 Jan 2004 - 22:19 - <a class="twikiLink" href="../../view/Main/AlexFerrer">AlexFerrer</a></span></div>
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