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While the translational motion model remains predominant in motion compensation, better coding efficiency can be achieved by applying a higher order motion model in cases of non-translationally moving video content. But so far, temporal motion vector prediction has not been fully optimized in case of higher order motion compensation. In particular, if the motion model provided by the reference picture...
Conventionally, complex motion in video sequences is approximated by smaller block units in order to be representable by a translational motion model. This approximation results in a fine block partitioning and a high prediction error, both at cost of more data rate than potentially necessary. A worthwhile data reduction has been shown to be achievable by adding a higher order motion model to the...
Complex motion in video sequences, such as rotation and scaling, conventionally approximated translationally, can more efficiently be represented by higher order motion models. An important contribution to the efficiency of the higher order motion compensation approach is the prediction and encoding of the additional motion parameters. The additional data rate caused by an increased amount of motion...
In video coding standards such as Advanced Video Coding (AVC) and its successor High Efficiency Video Coding (HEVC), motion compensation is performed by partitioning each inter-predicted picture into square or rectangular regions. While HEVC introduces an efficient quad-tree based splitting of square-shaped coding blocks into prediction blocks by symmetric and asymmetric motion partitioning, the boundaries...
In recent video compression standards only translational motion is accurately compensated, constraining any higher order motion to be approximated by being split into smaller translational units. The objective of this paper is to improve the coding efficiency for video sequences containing complex motion.Various higher order motion models are considered and evaluated to this end. Motivated by the...
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