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 dswitkin@google.com (Daniel Switkin) @author Sean Owen
- Inheritance
- Implementers
Constructors
Properties
- blackMatrix → BitMatrix
-
Get the 2D array of bits for the image (true means black).
no setteroverride
- hashCode → int
-
The hash code for this object.
no setterinherited
- height → int
-
no setterinherited
- luminanceSource → LuminanceSource
-
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- width → int
-
no setterinherited
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
yof luminance data torow(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