发明名称 Image screening system
摘要 A system for screening image data provided in digital format. The image data is first electronically examined to determine whether or not the data is comprised of highlight, shadow, or midtone. Where the image data is determined to be midtone, the data is processed using a high frequency electronic screen. Where the image data is determined to be highlight or shadow, the data is processed using a low frequency electronic screen.
申请公布号 US4196453(A) 申请公布日期 1980.04.01
申请号 US19780965668 申请日期 1978.12.01
申请人 XEROX CORP 发明人 WARREN, W THOMAS
分类号 H04N1/40;G03F5/00;G06T11/00;H04N1/405;(IPC1-7):H04N1/40 主分类号 H04N1/40
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