发明名称 |
Method for generating and storing digitalized density threshold values for the rastering of a half-tone picture original |
摘要 |
A method for generation and storage of digitized threshold density values for use in creating a half-tone image pattern such as in the form of color separations. The threshold density values in a sub-cell of a multiple reference cell (supercell) are stored as storage words in accordance with a spot function. A sorted sequence is determined tailored in accordance with the spot function and threshold density values are allocated to the words in accordance with position of the words in a sorted sequence. Corrections are made to the threshold density values in order to compensate for different numbers of storage words in the subcells.
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申请公布号 |
US5642436(A) |
申请公布日期 |
1997.06.24 |
申请号 |
US19950430162 |
申请日期 |
1995.04.27 |
申请人 |
LINOTYPE-HELL AG |
发明人 |
KERZ, LUDO |
分类号 |
H04N1/405;(IPC1-7):G06K9/38 |
主分类号 |
H04N1/405 |
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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