[M4IF Technotes] segment representation models

[Laurentiu Grigoriu]

Hi Rob,
Can a new (different) motion-description-based  representation model  be added? (is it possible?)
There are already 2 motion-based representation models (at least):
    "background mode" - assuming zero motion
    "motion compensation" mode - assuming constant motion
    and "animated face" can also be included into this category
If any mistake, please correct me.
Laurentiu
>  Introduction: MPEG-4 supports different object types. Many of theseare not block based. Objects (moving video, stills, streaming text, animatedface, 2D Mesh with texture, voice, generic Audio,
> synthetic music, etc) all have their own optimized representation (coding)Questions:1. New object types can be added in a system1) through a registration procedure to register private object types2)
> extension of the standard2. Updating present standard?Only if current framework is missing functionalit, or if major improvementsin e.g. compression are apparent. Not for Yet Another Tool for a type
> of content that is already supported3. As many as needed, under the above rules. There is no set maximum.   But there are not going to be a whole lot.Rob
>
>      -----Original Message-----
>      From: Laurentiu Grigoriu [mailto:laur   itcnetworks.ro]
>      Sent: Friday, January 18, 2024 4:52
>      To: technotes   lists.m4if.org
>      Subject: [M4IF Technotes] segment representation models
>
>      Hi all,
>
>      Introduction: (please correct me if I'm wrong)
>      MPEG-4 dynamic coding schema is based on 2 elements:
>      1. Image segmentation into (possible variable-size) blocks
>      2. A group of segment representation models:
>              DCT, background mode, motion compensation mode, fractal mode...
>      One and only one representation model is chosen for each segment.
>
>
>      Questions:
>      1. Does the MPEG-4 standard present the flexibility of adding one more NEW representation model?
>      2. How can this be standardized? (update the present standard)
>      3. How many representation models can be added?
>
>      Hope I'm not boring you.
>
>      Regards,
>      Laurentiu
>
>
>
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