Learn More
In this paper, a decoder side motion vector derivation scheme for inter frame video coding is proposed. Using a template matching algorithm, motion information is derived at the decoder instead of explicitly coding the information into the bitstream. Based on Lagrangian rate-distortion optimisation, the encoder locally signals whether motion derivation or(More)
Decoder-side motion vector derivation (DMVD) using template matching has been shown to improve coding efficiency of H.264/AVC based video coding. Instead of explicitly coding motion vectors into the bitstream, the decoder performs motion estimation in order to derive the motion vector used for motion compensated prediction. In previous works, DMVD was(More)
In this paper, a multihypothesis prediction scheme for inter frame video coding is proposed. Using a template matching algorithm, motion vectors are derived at the decoder side instead of explicitly coding the motion vectors into the bitstream. Therefore, higher numbers of hypotheses can be used in the averaging process at no additional coding cost. The(More)
The ongoing increase of computing performance facilitates a higher algorithmical complexity in video coding systems. The decoder may be able to estimate or derive prediction parameters based on the previously decoded signal. In this paper we present an extension to H.264/AVC where the explicit coding of motion parameters is adaptively replaced by a template(More)
In this paper quality scalable video coding using leaky base layer prediction for low-delay applications is considered. The temporal prediction reference for the base layer is generated by calculating a weighted average of the quality base layer and quality enhancement layer reference pictures. This provides close to single layer performance at the(More)
Motion estimation plays an important role for the coding performance achieved in current video coding schemes. However, the computational burden of motion estimation algorithms is often high, especially if the temporal distance between pictures is large. We describe a predictive motion estimation algorithm that takes advantage of motion correlation found(More)
  • 1