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AVL.EqualizeImageHistogram Method
Maps image pixels to new values to achieve uniform distribution of intensities in the range (0, 255).
Namespace: | AvlNet |
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Assembly: | AVL.NET.dll |
Syntax
public static void EqualizeImageHistogram( AvlNet.Image inImage, out AvlNet.Image outImage )
Parameters
Name | Type | Range | Default | Description | |
---|---|---|---|---|---|
inImage | AvlNet.Image | Input image. | |||
outImage | AvlNet.Image | Output image. |
Description
The filter applies non-linear mapping to image pixel values so that pixel intensities of the resulting image are evenly distributed in range from 0 to 255.
The operation computes the cumulative histogram \(C\) of inImage and the image size \(N\). Then the result is computed as follows:
\[ \begin{aligned} outImage[i,j] &= C[ inImage[i,j] ] \times \frac{255}{N} \end{aligned} \]