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