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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 |
|---|---|
| Assembly: | AVL.NET.dll |
Syntax
public static void EqualizeImageHistogram( AvlNet.Image inImage, AvlNet.Region inRoi, out AvlNet.Image outImage )
Parameters
| Name | Type | Range | Default | Description | |
|---|---|---|---|---|---|
 | inImage | AvlNet.Image | Input image. | ||
| inRoi | AvlNet.Region | Range of pixels to be processed. Default value: atl::NIL, or null. | ||
 | 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:
\[ \begin{aligned} outImage[i,j] &= C[ inImage[i,j] ] \times \frac{255}{N} \end{aligned} \]Examples
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EqualizeImageHistogram run on example image.
