ImageGear .NET v25.2 - Updated
ImageGear.OCR Assembly / ImageGear.OCR Namespace / ImGearOCRImage Class / ReduceToBitonal Method
Image conversion mode to be applied during the conversion of the image. Possible values are: AUTO, SET, GLOBAL.
Brightness of the image (range is 0 to 100, where 0 means the darkest and 100 means the lightest resulting image). This parameter has an effect only if the conversion parameter is set to AUTO.
Threshold value to be set. Its range should be between 0 and 255. This parameter has an effect only if the Conversion parameter is set to SET.




In This Topic
    ReduceToBitonal Method
    In This Topic
    Reduces an image to bitonal (black and white).
    Syntax
    'Declaration
     
    Public MustOverride Sub ReduceToBitonal( _
       ByVal reductionMode As ImGearOCRReductionMode, _
       ByVal brightness As Integer, _
       ByVal threshold As Integer _
    ) 
    'Usage
     
    Dim instance As ImGearOCRImage
    Dim reductionMode As ImGearOCRReductionMode
    Dim brightness As Integer
    Dim threshold As Integer
     
    instance.ReduceToBitonal(reductionMode, brightness, threshold)
    public abstract void ReduceToBitonal( 
       ImGearOCRReductionMode reductionMode,
       int brightness,
       int threshold
    )
    public: abstract void ReduceToBitonal( 
       ImGearOCRReductionMode reductionMode,
       int brightness,
       int threshold
    ) 
    public:
    abstract void ReduceToBitonal( 
       ImGearOCRReductionMode reductionMode,
       int brightness,
       int threshold
    ) 

    Parameters

    reductionMode
    Image conversion mode to be applied during the conversion of the image. Possible values are: AUTO, SET, GLOBAL.
    brightness
    Brightness of the image (range is 0 to 100, where 0 means the darkest and 100 means the lightest resulting image). This parameter has an effect only if the conversion parameter is set to AUTO.
    threshold
    Threshold value to be set. Its range should be between 0 and 255. This parameter has an effect only if the Conversion parameter is set to SET.
    Remarks
    This method performs a direct image conversion step, converting a color or grayscale image to a black-and-white (bitonal) one.
    See Also