| 摘要 |
PCT No. PCT/GB95/03012 Sec. 371 Date Jun. 24, 1997 Sec. 102(e) Date Jun. 24, 1997 PCT Filed Dec. 31, 1995 PCT Pub. No. WO96/20531 PCT Pub. Date Jul. 4, 1996A method of filtering a signal conglomerate using a datasieve having a plurality of filtering stages in cascade, at least one of the filtering stages comprising a recursive ordinal value filter. A typical arrangement comprises a sequence of recursive median filters of increasing scale (window size), providing low pass outputs from differing stages to enable a bandpass output to be formed by taking the difference between the low pass outputs. |
