17 Aug 2004
CS 5244: Multimedia
12/44
CCITT Fax IV
Horizontal run length
encoding
• Always starts
with white run
(possibly of length zero)
(possibly of length zero)
• Huffman code
stores a terminating
code (TC) of all lengths shorter than
64 pixels
code (TC) of all lengths shorter than
64 pixels
• Longer length
encoded by 64, 128, 256 =
2k make up code + TC
2k make up code + TC
From Witten et al, MG