Abstract
The bidirectional hierarchical anchoring (BIHA) of motion presented in the last chapter constitutes a fundamental change in the way motion is anchored and employed in a video compression system. Anchoring motion at reference-frames might appear counter-intuitive, since the motion information has to be mapped to target frames in order to serve as prediction reference. However, as shown in the last two chapters, this change of motion anchoring has a number of key advantages over the traditional anchoring of motion. First, motion information at finer temporal levels can be “recycled” from coarser levels, via the motion scaling operation. Second, during the motion mapping process, disoccluded regions are readily observed; this valuable information has to be explicitly communicated in a traditional anchoring scheme.
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- 1.
The term motion anchoring is more meaningful in a compression scenario, where the anchoring refers to motion fields that are coded.
- 2.
The example uses a static background for ease of explanation; we note that the method remains valid for any combination of moving foreground and background objects.
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Rüfenacht, D. (2018). Forward-Only Hierarchical Anchoring (FOHA) of Motion. In: Novel Motion Anchoring Strategies for Wavelet-based Highly Scalable Video Compression. Springer Theses. Springer, Singapore. https://doi.org/10.1007/978-981-10-8225-2_6
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DOI: https://doi.org/10.1007/978-981-10-8225-2_6
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