Image analysis – Image compression or coding
Patent
1996-03-06
1999-06-15
Coles, Edward L.
Image analysis
Image compression or coding
382199, 382236, 382245, 382266, 3582611, 358447, 358448, G06K 936, H04N 1419, H04N 140
Patent
active
059129905
ABSTRACT:
An image generation method and an image generation apparatus can execute conversion from edge addresses into dot patterns at a high speed and a low cost. A comparator compares predetermined upper-digit bits of input edge-address information indicating the position of a word of a dot pattern to be output with the value of a word counter for counting the number of words of dot patterns which have been output, and determines if an edge position indicated by the input edge-address information is present within the word currently being processed. A decoder detects the edge position within the word based on predetermined lower-digit bits of the input edge-address information. The detected edge position within the word is held within a flip-flop circuit. A pattern generator generates the dot pattern of one word from edge positions within the word held by the flip-flop circuit in accordance with the logic of a dot at an end of the word of the dot pattern which has been output immediately before the word being processed.
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patent: 4760459 (1988-07-01), Sato et al.
patent: 4783834 (1988-11-01), Anderson et al.
patent: 5287193 (1994-02-01), Lin
patent: 5300947 (1994-04-01), Katsura et al.
patent: 5574886 (1996-11-01), Koike et al.
Murata Masahiko
Yanagawa Katsuhiko
Canon Kabushiki Kaisha
Coles Edward L.
Wallerson Mark E.
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