GlobalHistogramBinarizer class

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 [e-mail] (Daniel Switkin) @author Sean Owen

Inheritance

• Object
• Binarizer
• GlobalHistogramBinarizer

Implementers

• HybridBinarizer

Constructors

GlobalHistogramBinarizer(LuminanceSource source)

Properties

blackMatrix → BitMatrix

Get the 2D array of bits for the image (true means black).

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

height → int

no setter, inherited

luminanceSource → LuminanceSource

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

width → int

no setter, inherited

Methods

createBinarizer(LuminanceSource source) → Binarizer

Creates a Binarizer with the same type as this Binarizer implementation, but with pristine state.

override

getBlackRow(int y, BitArray? row) → BitArray

Converts the row y of luminance data to row(true means black).

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited