发明授权
US4231656A Apparatus and method of converting an image on a transparency to line
art on a recording medium
失效
将透明度上的图像转换为记录介质上的线条图像的装置和方法
- 专利标题： Apparatus and method of converting an image on a transparency to line art on a recording medium
- 专利标题（中）： 将透明度上的图像转换为记录介质上的线条图像的装置和方法
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申请号： US24740申请日： 1979-03-28
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公开(公告)号： US4231656A公开(公告)日： 1980-11-04
- 发明人: Fred M. Dickey , Jerry R. White , James Crill
- 申请人： Fred M. Dickey , Jerry R. White , James Crill
- 申请人地址： WA Seattle
- 专利权人： The Boeing Company
- 当前专利权人： The Boeing Company
- 当前专利权人地址： WA Seattle
- 主分类号： G03B27/72
- IPC分类号： G03B27/72
摘要：
An apparatus and method of converting an image on a transparency such as photographic film to line art on a recording medium so that the line art may be microfilmed. The invention, through the use of optical processing techniques, greatly simplifies the conversion of continuous tone and half tone photographs to line art which heretofore had to be manually traced prior to microfilming the line art.
公开/授权文献
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