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\Large

\noindent \\

HLS Noise Ino\medskip

\par

\normalsize

Add pixel noise to the Hue, Lightness, Saturation, and Alpha of the image.\par

It allows for adding noise to cell-like images, to blend in with the background.\\

\par

The Alpha channel will determine the strength of the noise. Therefore,\par

smooth edges will remain smooth.\par

The strength of the Alpha channel itself will also affect noise.\\

\par

When checking the results, sub-camera must not be used.\par

As the sub-camera uses a different input image range, the noise pattern will\par

be different.\\

\\

-{-}- \ Inputs \ -{-}-\\

Source\par

Connect the image to be processed.\\

Reference\par

Connect the reference image to assign the strength of the effect into each pixel.\\

\\

-{-}- \ Settings \ -{-}-\\

Hue\par

Specify the strength of the noise for the color tone (Hue).\par

Pixel value (8 or 16bits) specified as a value from 0 to 1.\par

Minimum value is 0, maximum value is 1.\par

When it is 0, no noise will be applied to the hue.\par

The default value is 0.025.\\

\\

Lightness\par

Specify the strength of the noise for the brightness (Lightness).\par

Pixel value (8 or 16bits) specified as a value from 0 to 1.\par

Minimum value is 0, maximum value is 1.\par

When it is 0, no noise will be applied to the brightness (Lightness).\par

The default value is 0.035.\\

\\

Saturation\par

Specify the strength of the noise for the chroma (Saturation).\par

Pixel value (8 or 16bits) specified as a value from 0 to 1.\par

Minimum value is 0, maximum value is 1.\par

When it is 0, no noise will be applied to the chroma (Saturation).\par

The default value is 0.0.

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\ \vspace{-0.2em}

\par

\noindent Alpha\par

Specify the strength of the noise for the Alpha channel.\par

Pixel value (8 or 16bits) specified as a value from 0 to 1.\par

Minimum value is 0, maximum value is 1.\par

When it is 0, no noise will be applied to the Alpha channel.\par

The default value is 0.0.\\

\\

Seed\par

This value is used to determine the noise pattern to be applied to the image.\par

Specify an integer value greater than or equal to 0.\par

When this value is the same, it will produce the same pattern.\par

When this value is different, a different noise pattern will be produced.\par

The default value is 1.\\

\\

NBlur\par

It blurs the noise component, reducing the dots presence in the image.\par

Minimum value is 0, maximum value is 1.\par

Because it is calculated only in pixels adjacent to the dot,\par

it will feel like a very light blur.\par

When at 0, no blur will be applied; when at 1, it will apply an average of\par 

neighbor pixels.\par

The default value is 1.\\

\\

Limits\par

Adjusts the effect on the extremes (near 0 or 1) of Lightness, Saturation, and\par Alpha changes.\par

When noise is applied near 0 or 1, values less than 0 or greater than 1 could be\par generated, but since it cannot be expressed, they are truncated to 0 or 1\par 

respectively. This allows to compensate for the truncation.\par

-{-}> See Figure 1: \textquotedbl Noise effect adjustments at extremes values\textquotedbl.\par

-{-}> See Figure 2: \textquotedbl Illustration of noise change range at extreme values\textquotedbl.\\

\par

\noindent \ \ \, Effective\par

Determines the strength of the Limits effect.\par

When the value is at 0, it has no effect. The effect will be shown when values are\par 

greater than 0\par

A value of 1 will have the strongest effect.\par

The default value is 0.\\

\par

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\ \vspace{-0.2em}

\par

\noindent \ \ \, Center\par

Defines the center of the effect.\par

Allows to shift the range of the Limits effect, with more intensity at the\par 

extremes, and no intensity at its center.\par

The center value position will show no limiting effect.\par

The value must be between 0 and 1.\par

If is 0, Limits effect will have no effect for pixel values of 0.\par

If is 1, Limits effect will have no effect for pixel values of 1.\par

The default Center value is 0.5.\\

\par

\noindent \ \ \, Type\par

Select the Type of the effect.\par

When \textquotedbl Keep Noise\textquotedbl\ is selected, the overall noise range is\par 

shifted, maintaining its width, and reducing the contrast of the image.\par

When \textquotedbl Keep Contrast\textquotedbl\ is selected, the noise range width is\par 

reduced only at the extremes, to maintain the contrast of the image.\par

The default setting is \textquotedbl Keep Noise\textquotedbl .\\

\\

Premultiplied\par

When ON, the image will be processed as if having a Premultiplied Alpha channel\par 

(Alpha value already multiplied by RGB channels).\par

If image is not premultiplied, the image may not look correct.\par

The default setting is ON.\\

\\

Reference\par

Specify which channel to use from the image connected to the Reference port to\par 

drive the intensity of the effect.\par

Choose from Red/Green/Blue/Alpha/Luminance.\par

Choose Nothing to disable the effect.\par

The default value is \textquotedbl Red\textquotedbl .

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\ \vspace{1.5em}

\par

\noindent \hskip 2.2em Figure 1 Noise effect adjustments at extremes values.\\[0.4em]

\par

\scriptsize

\noindent \hskip 3.4em Original\par

\noindent \hskip 3.4em Effective = 0\par

\noindent \hskip 3.4em Keep Noise\par

\noindent \hskip 3.4em Keep Contrast

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\normalsize

\noindent \hskip 2.2em Figure 2 Illustration of noise change range at extreme values.\\[0.5em]

\par

\footnotesize

\noindent \hskip 2.65em Effective = 0: \ \ Noise extreme values are cut. (default)

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\noindent \hskip 2.65em Keep Noise: \ \ Shift maintaining noise. Contrast is reduced. Noise position is shifted overall.

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