Class GlobalHistogramBinarizer

Namespace

ZXing.Common

Assembly

zxing.dll

This Binarizer implementation uses the old ZXing global histogram approach. It is suitable for low-end mobile devices which don't have enough CPU or memory to use a local thresholding algorithm. However, because it picks a global black point, it cannot handle difficult shadows and gradients.

       Faster mobile devices and all desktop applications should probably use HybridBinarizer instead.

       <author>dswitkin@google.com (Daniel Switkin)</author>
       <author>Sean Owen</author>

public class GlobalHistogramBinarizer : Binarizer

Inheritance

object

Binarizer

GlobalHistogramBinarizer

Derived

HybridBinarizer

Inherited Members

Binarizer.LuminanceSource

Binarizer.Width

Binarizer.Height

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

GlobalHistogramBinarizer(LuminanceSource)

Initializes a new instance of the GlobalHistogramBinarizer class.

public GlobalHistogramBinarizer(LuminanceSource source)

Parameters

source LuminanceSource

The source.

Properties

BlackMatrix

Does not sharpen the data, as this call is intended to only be used by 2D Readers.

public override BitMatrix BlackMatrix { get; }

Property Value

BitMatrix

Methods

createBinarizer(LuminanceSource)

Creates a new object with the same type as this Binarizer implementation, but with pristine state. This is needed because Binarizer implementations may be stateful, e.g. keeping a cache of 1 bit data. See Effective Java for why we can't use Java's clone() method.

public override Binarizer createBinarizer(LuminanceSource source)

Parameters

source LuminanceSource

The LuminanceSource this Binarizer will operate on.

Returns

Binarizer

A new concrete Binarizer implementation object.

getBlackRow(int, BitArray)

Applies simple sharpening to the row data to improve performance of the 1D Readers.

public override BitArray getBlackRow(int y, BitArray row)

Parameters

y int

row BitArray

Returns

BitArray