com.google.zxing.common.reedsolomon (Javadocs [I2P+ 2.13.0+]

Class Summary
Class	Description
GenericGF	This class contains utility methods for performing mathematical operations over the Galois Fields.
GenericGFPoly	Represents a polynomial whose coefficients are elements of a GF.
ReedSolomonEncoder	Implements Reed-Solomon encoding, as the name implies.

Package com.google.zxing.common.reedsolomon Description

Reed-Solomon error correction algorithms for ZXing barcode library. This package provides implementations of Reed-Solomon error correction codes used in 2D matrix barcodes like QR codes and Data Matrix. Reed-Solomon codes enable the detection and correction of errors in barcode data, improving reliability and readability even when the barcode is partially damaged or obscured.

Key Components

GenericGF - Generic Galois Field implementation
GenericGFPoly - Generic Galois Field Polynomial
ReedSolomonEncoder - Reed-Solomon encoding implementation

Main Features

Support for multiple field sizes (GF(256), GF(4096), etc.)
Efficient encoding and decoding algorithms
Error detection and correction capabilities
Configurable error correction levels
Optimized for barcode applications

Usage in Barcodes

QR Code error correction
Data Matrix error correction
Aztec error correction
PDF417 error correction

Related Packages

com.google.zxing.common - Common ZXing utilities
com.google.zxing.qrcode - QR code implementation
Data Matrix implementation (see com.google.zxing.datamatrix package)

Mathematical Background

Reed-Solomon codes are block-based error correction codes that work by adding redundant data to messages. They can detect and correct multiple errors within a block, making them ideal for applications where data integrity is critical but the transmission medium may be unreliable.

Since 0.9.10