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  2. ZBar - Wikipedia

    en.wikipedia.org/wiki/ZBar

    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.

  3. Barcode library - Wikipedia

    en.wikipedia.org/wiki/Barcode_library

    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.

  4. Reed–Solomon error correction - Wikipedia

    en.wikipedia.org/wiki/Reed–Solomon_error...

    The original construction of Reed & Solomon (1960) interprets the message x as the coefficients of the polynomial p, whereas subsequent constructions interpret the message as the values of the polynomial at the first k points , …, and obtain the polynomial p by interpolating these values with a polynomial of degree less than k.

  5. Code 128 - Wikipedia

    en.wikipedia.org/wiki/Code_128

    ZXing – Multiplatform open source barcode scanner / generator with versions available in Java (core project) and ports to ActionScript, C++, C#, ObjectiveC and Ruby. Python Bar Code 128 – This code appears to draw boxes one pixel wide. It appears it was modified from a short line long line bar code which would have drawn lines.

  6. Aztec Code - Wikipedia

    en.wikipedia.org/wiki/Aztec_Code

    Compact Aztec symbol encoding the message, 'Wikipedia, the free encyclopedia'. Message data is placed in a spiral pattern around the core. The mode message begins "01011100", indicating 01 2 +1 = 2 layers, and 011100 2 +1 = 29 data codewords (of 6 bits each). The message data is encoded using a (63,52) Reed-Solomon code (shortened to (40,29 ...

  7. Barcode reader - Wikipedia

    en.wikipedia.org/wiki/Barcode_reader

    A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [1] Like a flatbed scanner , it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals.

  8. PDF417 - Wikipedia

    en.wikipedia.org/wiki/PDF417

    PDF417 is a stacked barcode that can be read with a simple linear scan being swept over the symbol. [4] Those linear scans need the left and right columns with the start and stop code words. Additionally, the scan needs to know what row it is scanning, so each row of the symbol must also encode its row number.

  9. Barcode Scanner (application) - Wikipedia

    en.wikipedia.org/wiki/Barcode_Scanner_(application)

    The Barcode Scanner can automatically search the Web to identify a product with a barcode and use, for example, price-comparison information between vendors. The application can decode several 2D barcodes including the widely used QR Code and Data Matrix. QR codes are often embedded in websites; Barcode Scanner can open a browser at the encoded ...