Namespace ZXing.Multi

Classes

ByQuadrantReader

This class attempts to decode a barcode from an image, not by scanning the whole image, but by scanning subsets of the image. This is important when there may be multiple barcodes in an image, and detecting a barcode may find parts of multiple barcode and fail to decode (e.g. QR Codes). Instead this scans the four quadrants of the image -- and also the center 'quadrant' to cover the case where a barcode is found in the center.

GenericMultipleBarcodeReader

Attempts to locate multiple barcodes in an image by repeatedly decoding portion of the image. After one barcode is found, the areas left, above, right and below the barcode's {@link com.google.zxing.ResultPoint}s are scanned, recursively.

A caller may want to also employ {@link ByQuadrantReader} when attempting to find multiple 2D barcodes, like QR Codes, in an image, where the presence of multiple barcodes might prevent detecting any one of them.

That is, instead of passing a {@link Reader} a caller might pass

new ByQuadrantReader(reader)

. Sean Owen

Interfaces

MultipleBarcodeReader

Implementation of this interface attempt to read several barcodes from one image. Sean Owen Reader