Download Multi-Frame Motion-Compensated Prediction for Video by Thomas Wiegand PDF

By Thomas Wiegand

Multi-Frame Motion-Compensated Prediction for Video Transmission provides a accomplished description of a brand new method in video coding and transmission. The paintings offered within the booklet has had a really powerful impression on video coding criteria and should be of curiosity to working towards engineers and researchers in addition to academics.
The multi-frame procedure and the Lagrangian coder keep an eye on were followed by way of the ITU-T as a vital part of the well-known H.263 average and are have been followed within the ongoing H.26L undertaking of the ITU-T Video Coding specialists Group.
This paintings will curiosity researchers and scholars within the box of video coding and transmission. in addition, engineers within the box may also be considering the fact that a vital part of the well-known H.263 ordinary relies at the provided material.

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Extra info for Multi-Frame Motion-Compensated Prediction for Video Transmission

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For aliasing prediction, a high-resolution image for sub-pixel motion compensation is estimated. The estimation for background memory and aliasing prediction is based on past decoded frames and transmitted parameters since encoder and decoder have to conduct it simultaneously. Therefore, the possible prediction gain highly depends on the accuracy of these estimates. Additionally, each of the methods (short-term frame memory/long-term frame memory, background memory and aliasing prediction) can only exploit the particular effect it is designed for.

17) where C = In2j(3a). Although the assumptions here may not be completely realistic, the derivation reveals at least the qualitative insight that it may be reasonable for the value of the Lagrange parameter AMODE to be proportional to the square of the quantizer value. 85 appears to be a reasonable value for use as the constant c. 17), an experiment has been conducted to measure the distortion-rate slopes dDREc(Q)jdRREc(Q) for a given value of Q. The experiment consists of the following steps: 1.

A theoretical frame work for bit-allocation in a hybrid video coder has been introduced by GIROD [Gir94]. The analysis in [Gir94] provides the insight that the hybrid video coder should operate at constant distortion-rate slopes when allocating bits to the motion vectors and the residual coding. 263 The ITU -T Video Coding Experts Group maintains a document describing examples of encoding strategies, called its test model. An important contribution of this book is the proposal of a coder control that is based on Lagrangian optimization techniques [ITU98b].

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