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AVL.CorrectGamma
Performs gamma correction.
| Namespace: | AvlNet |
|---|---|
| Assembly: | AVL.NET.dll |
Syntax
public static void CorrectGamma ( AvlNet.Image inImage, NullableRef<AvlNet.Region> inRoi, float inValue, AvlNet.Image outImage )
Parameters
| Name | Type | Range | Default | Description | |
|---|---|---|---|---|---|
 | inImage | AvlNet.Image | Input image. | ||
| inRoi | AvlNet.NullableRef<AvlNet.Region> | Range of pixels to be processed. Default value: atl::NIL. | ||
| inValue | float | <0.01f, 8.0f> | 2.0f | Gamma coefficient, where 1.0 is neutral. Default value: 2.0f. |
 | outImage | AvlNet.Image | Output image. |
Description
The gamma correction is a standard nonlinear transformation of pixel brightness that was developed as a tool for the compensation of CRT display input-output characteristic. The operation scales brightness of each inImage pixel to the 0.0 - 1.0 range, exponentiates it to the power of inValue, and then scales the result back to the pixel values range.
Examples
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The CorrectGamma performed on the sample image with inValue = 2.0 (left image) and inValue = 0.5 (right image).
Hardware Acceleration
This operation supports automatic parallelization for multicore and multiprocessor systems.
Hardware acceleration settings may be manipulated with Settings class.
Errors
List of possible exceptions:
| Error type | Description |
|---|---|
| DomainError | Not supported inImage pixel format in CorrectGamma. |
