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ZBar is an open-source C barcode reading library with C++, Python, [2] Perl, and Ruby bindings. [3] [4] [5] It is also implemented on Linux and Microsoft Windows as a command-line application, [6] and as an iPhone application. [7] It was originally developed at SourceForge. [8]
Barcode library or Barcode SDK is a software library that can be used to add barcode features to desktop, web, mobile or embedded applications. Barcode library presents sets of subroutines or objects which allow to create barcode images and put them on surfaces or recognize machine-encoded text / data from scanned or captured by camera images with embedded barcodes.
The barcodes are packed close enough together that the reader always has one or two barcodes in its field of view. As a kind of fiducial marker , the relative position of the barcode in the field of view of the reader gives incremental precise positioning, in some cases with sub-pixel resolution .
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [6] [7] [8] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [9] the pattern of the position detection markers was determined by finding the least-used sequence of ...
OBR – for barcodes recognition [5] BCR – for bar code recognition [6] DLR – for document layer recognition [citation needed] These basic technologies allow extracting information from paper documents for further processing in the enterprise information systems such as ERP, CRM, and others. [citation needed]
MicroPDF417 barcode has 929 data codewords, where 900 data codewords (0 - 899) are available in each mode for data encoding and 29 (900 - 928) codewords are assigned to specific functions, [3]: 5.4.1 most of which defines data encoding modes. Encoding modes can be split into two encoding types: common modes for ordinary binary or text data ...
PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management. "PDF" stands for Portable Data File. The "417" signifies that each pattern in the code consists of 4 bars and spaces in a pattern that is 17 units (modules) long.
It was developed for, and is used extensively by, the Python project for documentation. [9] Since its introduction in 2008, Sphinx has been adopted by many other important Python projects, including Bazaar, SQLAlchemy, MayaVi, SageMath, SciPy, Django and Pylons. It is also used for the Blender user manual [10] and Python API documentation. [11]