# Package com.google.zxing.common

- Class Summary
  Class | Description
  --- | ---
  BitArray | A simple, fast array of bits, represented compactly by an array of ints internally.
  BitMatrix | Represents a 2D matrix of bits.
  BitSource | This provides an easy abstraction to read bits at a time from a sequence of bytes, where the number of bits read is not often a multiple of 8.
  DecoderResult | Encapsulates the result of decoding a matrix of bits.
  DefaultGridSampler |
  DetectorResult | Encapsulates the result of detecting a barcode in an image.
  GlobalHistogramBinarizer | This Binarizer implementation uses the old ZXing global histogram approach.
  GridSampler | Implementations of this class can, given locations of finder patterns for a QR code in an image, sample the right points in the image to reconstruct the QR code, accounting for perspective distortion.
  HybridBinarizer | This class implements a local thresholding algorithm, which while slower than the GlobalHistogramBinarizer, is fairly efficient for what it does.
  PerspectiveTransform | This class implements a perspective transform in two dimensions.
  StringUtils | Common string-related functions.

- Enum Summary
  Enum | Description
  --- | ---
  CharacterSetECI | Encapsulates a Character Set ECI, according to "Extended Channel Interpretations" 5.3.1.1 of ISO 18004.

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