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Thresholds an image with a hysteresis, i.e. with a lower threshold for neighboring pixels.
Namespace: | AvlNet |
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Assembly: | AVL.NET.dll |
Syntax
C++
C#
public static void ThresholdImage_Hysteresis ( AvlNet.Image inImage, float inHysteresis, AvlNet.Image outMonoImage )
Parameters
Name | Type | Range | Default | Description | |
---|---|---|---|---|---|
inImage | AvlNet.Image | Input image. | |||
inHysteresis | float | <0.0f, INF> | 16.0f | Defines how much the threshold criteria are lowered for pixels neighboring with other foreground pixels. Default value: 16.0f. | |
outMonoImage | AvlNet.Image |
Description
The operation transforms each pixel value to the maximum or minimum level thus creating binary image. The result of the transformation depends on the pixel intensity:
- Pixel values in range [inMinValue, inMaxValue] are transformed to the maximum level.
- Pixel values lower than inMinValue-inHysteresis or higher than inMaxValue+inHysteresis are transformed to the minimum level.
- Pixel values in range [inMinValue-inHysteresis, inMinValue) or in range (inMaxValue, inMaxValue+inHysteresis] are transformed to the maximum if (and only if) in the processed image there is a path of consecutive pixels of value in range [inMinValue-inHysteresis, inMaxValue+inHysteresis] that connects the pixel being considered and any pixel with value in range [inMinValue, inMaxValue].
In the multichannel images the operation uses an average of channel values in each pixel, thus the resulting image is always monochromatic.
Examples
Hardware Acceleration
This operation supports automatic parallelization for multicore and multiprocessor systems.
Hardware acceleration settings may be manipulated with Settings class.