发明名称 Background noise removal for a low-cost digital color copier
摘要 Provided is a system for eliminating background noise, i.e. unwanted dots of ink in the background of a document which is to be reproduced by a copier. An STS module collects statistics on a stream of pixels representing an original document generated by a scanner of the copier. The statistics are used by an MIC module to determine a reference background color value of the scanned document. The reference background color value and pixel values of pixels included in the pixel stream are compared by an RTE module and the results of comparison are used to adjust, when necessary, the pixel values remove the undesirable background noise.
申请公布号 US6323957(B1) 申请公布日期 2001.11.27
申请号 US19980088099 申请日期 1998.06.01
申请人 XEROX CORPORATION 发明人 BALL JAMES L.
分类号 H04N1/409;G03G15/01;G06T5/00;H04N1/46;H04N1/58;H04N1/60;(IPC1-7):H04N1/409;G06K9/40;G06K9/46;G06T5/40 主分类号 H04N1/409
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