[M4IF Technotes] gray shapes

[axel.binder philips.com]

Hi together,
there is a filter defined for subsampling binary shapes when they are applied to
chrominance planes. Is there a similar filter defined for gray shapes?
Take the average, take the maximum alpha, ...?
regards
axel binder
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Axel Binder                     Philips Starnberg
Development Manager Software    Petersbrunner Str. 17
                                D-82319 Starnberg
phone:  +49 8151 270 108        Germany
fax:    +49 8151 270 200
mobile: +49 172 92 18 623
e-mail: axel.binder   philips.com
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