Efficient Motion Modelling with Variable-sized blocks from Hierarchical Cuboidal Partitioning. (arXiv:2208.13137v1 [cs.CV])

Motion modelling with block-based architecture has been widely used in video
coding where a frame is divided into fixed-sized blocks that are motion
compensated independently. This often leads to coding inefficiency as
fixed-sized blocks hardly align with the object boundaries. Although
hierarchical block-partitioning has been introduced to address this, the
increased number of motion vectors limits the benefit. Recently, approximate
segmentation of images with cuboidal partitioning has gained popularity. Not
only are the variable-sized rectangular segments (cuboids) readily amenable to …

arxiv hierarchical modelling partitioning