发明名称 Dot pattern forming apparatus and set of FM screen threshold matrices
摘要 A continuous-tone image of uniform density and the thresholds in the FM screen threshold matrices are compared to form dot patterns for CKM-separations. When the dot patterns are transformed by FFT, frequency-domain data are obtained. The obtained frequency-domain data are substantially elliptical figures, and the directions of the major axes of the substantially elliptical figures differ from each other.
申请公布号 US2006221400(A1) 申请公布日期 2006.10.05
申请号 US20060393693 申请日期 2006.03.31
申请人 FUJI PHOTO FILM CO., LTD. 发明人 SUGIZAKI MAKOTO
分类号 H04N1/405 主分类号 H04N1/405
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