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I like to encode QR codes. Therefore I need to know, how much error correction words are needed by an specified version and correction level. For QR version 1 in combination with ec-level Q there must be 13 error correction words and 13 data words. I know there are some tables (table 7,8,9) in the ISO/IEC 18004 where this information is stored. But I like to know if it's possible to calculate the amount of needed error correction words.

Greets, Raffi

netblognet
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Yes, you need ISO 18004. I suppose you could also look at the source code from zxing that calculates this. It happens around the method interleaveWithECBytes.

Sean Owen
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