Class DataMatrixReader

This implementation can detect and decode Data Matrix codes in an image.

author: bbrown@google.com (Brian Brown)

Hierarchy

DataMatrixReader

Implements

Reader

Index

Properties

Methods

Properties

Private decoder

decoder: Decoder = new Decoder()

Static Private NO_POINTS

NO_POINTS: ResultPoint[] = []

Methods

decode

decode(image: BinaryBitmap, hints?: Map<DecodeHintType, any> | null): Result

Implementation of Reader.decode
- Defined in src/core/datamatrix/DataMatrixReader.ts:57
Locates and decodes a Data Matrix code in an image.

throws

NotFoundException if a Data Matrix code cannot be found

throws

FormatException if a Data Matrix code cannot be decoded

throws

ChecksumException if error correction fails

Parameters
- image: BinaryBitmap
- Default value hints: Map<DecodeHintType, any> | null = null
Returns Result

a String representing the content encoded by the Data Matrix code

reset

reset(): void

Implementation of Reader.reset
- Defined in src/core/datamatrix/DataMatrixReader.ts:92
Returns void

Static Private extractPureBits

extractPureBits(image: BitMatrix): BitMatrix

- Defined in src/core/datamatrix/DataMatrixReader.ts:104
This method detects a code in a "pure" image -- that is, pure monochrome image which contains only an unrotated, unskewed, image of a code, with some white border around it. This is a specialized method that works exceptionally fast in this special case.

see

com.google.zxing.qrcode.QRCodeReader#extractPureBits(BitMatrix)

Parameters
- image: BitMatrix
Returns BitMatrix

Static Private moduleSize

moduleSize(leftTopBlack: Int32Array, image: BitMatrix): number

- Defined in src/core/datamatrix/DataMatrixReader.ts:145
Parameters
- leftTopBlack: Int32Array
- image: BitMatrix
Returns number

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