The data stream uses letters to identify dot counts.
CAPITAL letters represent black dots.
lowercase letters represent white dots.
Using the chart below, the data stream for row 1 would be:
Dot count:
Row 1: 4 White, 8 Black, 19 White, 8 Black, 4 White
Data Stream:
dHsHd p
(4 white = d, 8 black = H, 19 white = s)
Use multiple letter codes to indicate strings of
9 white dots = ccc
Coding Chart
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#dots | Code | # dots | Code | # dots | Code | # dots | Code |
1 | A | 14 | N | 1 | a | 14 | n |
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2 | B | 15 | O | 2 | b | 15 | o |
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3 | C | 16 | P | 3 | c | 16 | p |
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4 | D | 17 | Q | 4 | d | 17 | q |
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5 | E | 18 | R | 5 | e | 18 | r |
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6 | F | 19 | S | 6 | f | 19 | s |
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7 | G | 20 | T | 7 | g | 20 | t |
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8 | H | 21 | U | 8 | h | 21 | u |
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9 | I | 22 | V | 9 | i | 22 | v |
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10 | J | 23 | W | 10 | j | 23 | w |
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11 | K | 24 | X | 11 | k | 24 | x |
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12 | L | 25 | Y | 12 | l | 25 | y |
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13 | M | 26 | Z | 13 | m | 26 | z |
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The graphic data stream contains a graphic header record followed by data streams for each row of dots in the image.
Using Graphics