Figure 5. Symbols with the same data (“0242FZ5CGW0D”), encoded in a 7 row by 50 column pattern using masks 0-3 (top to bottom) showing how the masks can eliminate blank columns (masks 0 and 4). The scores for each mask are -106, 137, 325 and -15 respectively and the threshold is 175

From

DotCode Damage Testing

Kevin Berisso

Journal of Computer Sciences and Applications. 2018, 6(1), 43-47 doi:10.12691/jcsa-6-1-6