  In this paper the definitions and the properties of a newle dedicated set of
high-frequency filters based on smoothing-and-clipping are briefly described.
New applications for reduction of wide--field 2048x2048 CCD spectral and direct
images of a new deep survey KISS (KPNO International Spectral Survey) are also
presented. The developed software is available both as a C subroutine and as an
installed MIDAS environment command.
