# Package com.google.zxing.common.reedsolomon

Reed-Solomon error correction algorithms for ZXing barcode library.

See: Description

- 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.