发明名称 |
Anti-alias font generation |
摘要 |
A method of generating a second, substantially anti-aliased, representation of a character from a first representation. The second representation is comprised of horizontal lines of dots that are shifted horizontally relative to dots of the first representation, each dot of the first representation having a value DOT1 associated therewith. The method include a step of, for each horizontal line (1-m) within the first representation of a character and for each dot (1-j) within a horizontal line, (a) determining a modifying value (DOT1k) associated with a dot(k) of the first representation, DOT1k being a function of DOT1 of the dot(k). The method includes another step of determining a value (DOT2k) of a corresponding dot for the second representation, the value of the corresponding dot being determined in accordance with the expression DOT2k=((DOT1-DOT1k )+DOT1(k-1)), where DOT1(k-1) is a modifying value of an adjacent dot on the horizontal line. The modifying value is preferably determined by a table lookup procedure within a table of previously generated values.
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申请公布号 |
US5390289(A) |
申请公布日期 |
1995.02.14 |
申请号 |
US19930169750 |
申请日期 |
1993.12.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BEITEL, BRADLEY J.;GORDON, ROBERT D.;WITHERSPOON, III, JOSEPH B. |
分类号 |
G06F3/147;G09G5/24;G09G5/28;(IPC1-7):G06F15/62 |
主分类号 |
G06F3/147 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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