A method and apparatus for downscaling video images to a lower resolution
(e.g. from HDTV to SDTV) is presented. The method comprising the steps of
frequency domain anti-aliasing filtering and downscaling the first video
signal in a first direction corresponding with a line direction in the
first video signal to obtain a downscaled video signal, and spatial
domain downscaling the downscaled video signal in a second direction
perpendicular to the first direction to obtain the second video signal.
The method and apparatus of the invention are suitable for efficient and
high quality decoding both progressive and any-type encoded interlaced
signals.