Decoding
The process of extracting data from a QR code image: locating finder patterns, reading format/version information, removing the mask, deinterleaving codewords, performing Reed-Solomon error correction, and interpreting the data segments.
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How QR Code Scanning Works: From Camera to Data
QR Code Fundamentals…some QR codes fail to scan and how to design codes that decode reliably. Step 1: Image Capture and Binarisation The…
Mask Patterns: The Hidden Optimisation in Every QR Code
QR Code FundamentalsThe Finder Pattern: Why QR Codes Have Three Squares
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Reed-Solomon Error Correction in QR Codes
QR Code Fundamentals…improving recovery from large contiguous damage areas. The Decode Side When decoding, the scanner: Calculates syndromes — if…
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BCH and Golay Codes in Format and Version Information
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Error Correction & Data Integrity…support Micro QR or rMQR error correction fully. Some may decode correctly at EC-L but fail to apply full error correction…