Forgive me if this question has been asked / answered earlier in the MUG:
In section 33.1.2. the transparency exchanged attribute is defined as the
level of transparency that is to be applied to those image pixels which are
marked as transparent in the image content data. Furthermore, the value of
the MHEG transparency attribute and the transparency level specified in the
image content data (if specified) 'are to be combined'.
1. question: Suppose one sets the transparency level to 0% (= fully opaque),
what color value will pixels have which are marked as transparent in the
image content data? Or does MHEG not want to specify on this?
2. How is the value of the MHEG transparency attribute and the level of
transparency encoded in the image content data to be conbined? Does MHEG
want to specify on this issue?
Has anybody any experience in how to apply these requirements to PNG, the
image format choosen by DAVIC) ? My suggestion is to find a solution that
at least works well together with PNG.
BR Guido
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Guido Grassel guido.grassel@research.nokia.com
Nokia Research Center tel/fax: +358 9 4376-6827/6855
mailing address: location:
P.O. Box 422 Itälahdenkatu 22b
FIN-00045 Nokia Group 00210 Helsinki-Lauttasaari
Finland