http://avisynth.nl/index.php?action=history&feed=atom&title=MaskTools%2FYV12Convolution 2026-06-07T03:48:55Z Revision history for this page on the wiki MediaWiki 1.19.24 http://avisynth.nl/index.php?title=MaskTools/YV12Convolution&diff=181&oldid=prev 2013-05-09T15:02:00Z

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Admin http://avisynth.nl/index.php?title=MaskTools/YV12Convolution&diff=180&oldid=prev 2008-02-28T22:20:57Z

<p>New page: {{FilterCat|External_filters|Other_filters|Support_filters}} {{FuncDef|YV12Convolution (clip[, string &quot;horizontal&quot;[, string &quot;vertical&quot;[, int &quot;total&quot;[, bool &quot;automatic&quot;[, bool &quot;saturate&quot;]]...</p> <p><b>New page</b></p><div>{{FilterCat|External_filters|Other_filters|Support_filters}}<br /> <br /> {{FuncDef|YV12Convolution (clip[, string &quot;horizontal&quot;[, string &quot;vertical&quot;[, int &quot;total&quot;[, bool &quot;automatic&quot;[, bool &quot;saturate&quot;]]]]])}}<br /> <br /> '''Plugin''': [[MaskTools]]<br /> <br /> This filter computes the convolution product between the picture and the kernel defined by the multiplication of &lt;tt&gt;horizontal&lt;/tt&gt; by &lt;tt&gt;vertical&lt;/tt&gt;. These two strings represent vectors. They must have an odd number of integer or real numbers, separated by single spaces. <br /> <br /> &lt;tt&gt;total&lt;/tt&gt; is a normalization factor, by which the result of the product is divided. If &lt;tt&gt;automatic&lt;/tt&gt; is set to 'true', &lt;tt&gt;total&lt;/tt&gt; is the sum of the coefficients of the matrix. It means that, that way, overall brightness of the picture isn't touched. <br /> <br /> &lt;tt&gt;saturate&lt;/tt&gt; allows to choose the behavior of the filter when the result is a negative number:<br /> <br /> * &lt;tt&gt;saturate&lt;/tt&gt; = true : negative values are zeroed.<br /> * &lt;tt&gt;saturate&lt;/tt&gt; = false : negative values are inverted. <br /> <br /> If &lt;tt&gt;total&lt;/tt&gt; is not defined, it is set to the sum of the coefficients of the convolution kernel, thus allowing a good normalization for bluring / sharpening kernels.<br /> <br /> If one of the coefficients of &lt;tt&gt;horizontal&lt;/tt&gt; or &lt;tt&gt;vertical&lt;/tt&gt; is a real number, all the computations will be made with floats, so the filter will be slower.<br /> <br /> Defaults are: &lt;tt&gt;horizontal&lt;/tt&gt; = &quot;1 1 1&quot;, &lt;tt&gt;vertical&lt;/tt&gt; = &quot;1 1 1&quot;, &lt;tt&gt;automatic&lt;/tt&gt; = false, &lt;tt&gt;saturate&lt;/tt&gt; = true. <br /> <br /> ----<br /> Back to [[MaskTools]].</div>

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