The ECC column is an error-tolerant encoding that I used to prepare the label location map. (The name "ECC" has no particular meaning.)
To produce this encoding, the Voynich characters are broken down into separate pen strokes. Then certain stroke sequences are collapsed back into single characters (not necessarily honoring the original character boundaries), omitting several details that are either too prone to error, that seem to be meaningless calligraphic variations, or that seem to have little semantic value.
In particular, the ECC encoding ignores
The ECC encoding uses only the letters 8coqHPemrkij. Here is the approximate correspondence between Frogguy and ECC:
.Frogguy: o a 9 4 8 ig -------- ---- ---- ---- ---- ---- ---- ECC: o o o q 8 8 Frogguy: x ix iix iiix -------- ---- ---- ---- ---- ECC: e e e e Frogguy: e e' c t s v iv iiv iiiv -------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ECC: c c c c c m m m m Frogguy: 2 i2 ii2 iii2 r ir iir iiir -------- ---- ---- ---- ---- ---- ---- ---- ---- ECC: r r r r r r r r Frogguy: k ik iik iiik eg -------- ---- ---- ---- ---- ---- ECC: k k k k cj Frogguy: qp lp eQPt eLPt -------- ---- ---- ---- ---- ECC: H H cHc cHc Frogguy: dj fj eDJt eFJt -------- ---- ---- ---- ---- ECC: P P cPc cPc
Here is the approximate inverse mapping from ECC to FSG:
ECC FSG ---- --- 8 8, 7 H H, D P P, F o A, G, CI, O om AM, AIN, CIIIL, AN, CM, CN, OM, ... or AR, CIR, OR, OIR, O2, A2, ... ak AIK, CIIK, OK, ... c C cHc HZ, DZ cPc PZ, FZ co CA, CG, CCI, TI, SI cc T, S, CC cj 6 e E, IE, IIE, IIIE i I k K, IK, IIK, IIIK m M, N, IM, IL, L q 4 r R, IR, IIR, IIIR, 2, I2, II2, III2
Note that the inverse mapping is (on purpose) quite ambiguous.
Leaving the cj code for FSG 6 was a minor mistake; I shoudl have mapped it to 8, as I did for FSG 7.