Thetype exposes the following members.
Creates a new instance of AdaptiveThresholdCommand.
Initializes a new instance ofspecifying the window size.
Initializes a new instance ofspecifying the window size and difference threshold.
Creates a new instance of AdaptiveThresholdCommand from serialization information.
Reports whether or not this command will be applied to any supplied PixelFormat image(Inherited from ImageCommand.)
If set to true the IThreadableCommand will automatically parallelize image processing.
Returns true if the command can be applied to any PixelFormat.(Inherited from ImageCommand.)
Gets or sets a value used for improving the thresholding results.
Gets a value indicating if the source image data is processed in-place as opposed to returning a new image.(Inherited from ImageCommand.)
Gets or sets the ProgressEventHandler delegate which can be used to view or cancel the progress of the current process.(Inherited from ImageCommand.)
(Inherited from ImageRegionCommand.)
Gets or sets a RegionOfInterest which will only process the indicated region of the image.
Returns an array of PixelFormats supported by this command.(Overrides ImageCommandSupportedPixelFormats.)
Gets or sets the size of local window acting on each pixel to find local statistics.
Sets the image area which will be processed and also defines the bands or chunks of the image of which each will be sent to a separate thread.
Apply the command to the given image.(Inherited from ImageCommand.)
|ApplyToImage|| Obsolete. |
Applies the command to the source AtalaImage.(Inherited from ImageCommand.)
Returns a copy of the command.
The method is called by the default implementation of Apply. It determines if it is necessary to create a copy of the source image in a different pixel format and if so, determines the best new pixel format and allocates that image.(Overrides ImageCommandConstructChangedSourceImage(AtalaImage).)
Called by the default implementation of Apply, ConstructFinalImage constructs the image that will be used as the destination image for the command.(Overrides ImageCommandConstructFinalImage(AtalaImage).)
Constructs the results object for this command.(Inherited from ImageCommand.)
Determines whether the specified object is equal to the current object.(Inherited from Object.)
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
This method is called to change the pixel format of the source image.(Inherited from ImageCommand.)
Serves as the default hash function.(Inherited from Object.)
|GetObjectData||(Overrides ImageRegionCommandGetObjectData(SerializationInfo, StreamingContext).)|
Gets the Type of the current instance.(Inherited from Object.)
Aggregates ImageCommand data into the supplied SerializationInfo object.(Inherited from ImageCommand.)
Returns a value indicating if the specified pixel format is supported.(Inherited from ImageCommand.)
Creates a shallow copy of the current Object.(Inherited from Object.)
Performs the actual command.(Overrides ImageCommandPerformActualCommand(AtalaImage, AtalaImage, Rectangle, ImageResults).)
Performs the command on a specified section of the image.
Choose the best pixel format to use for this command when the supplied source image's pixel format is unacceptable.(Inherited from ImageCommand.)
Chooses a pixel format that is preferred for this command.(Inherited from ImageCommand.)
Returns a string that represents the current object.(Inherited from Object.)
Verify the integrity of an AtalaImage.(Inherited from ImageCommand.)
Verify the integrity of properties in the command before processing an image.(Overrides ImageCommandVerifyProperties(AtalaImage).)
The AdaptiveThresholdCommand can be used to cleanup a color or grayscale image when converting to black and white. It results in an image that generally renders text and objects intact, while removing effects from color shades.
Like global thresholding, adaptive thresholding is used to separate desirable foreground image objects from the background. This is based on the difference in pixel intensities of each region, while global thresholding uses a fixed threshold for all pixels and therefore works only if the intensity histogram of the input image contains obviously separated peaks corresponding to the desired subjects and backgrounds. Hence it cannot deal with images containing, for example, a strong illumination gradient. Local adaptive thresholding selects an individual threshold for each pixel. This allows for thresholding of an image whose global intensity histogram doesn't contain distinctive peaks.