Graph-Based Transforms for Video Coding

Motion transforms for video coding

Video coding standards use motion compensated prediction to reduce temporal redundancies. In general this is performed by computing motion vectors for predefined regions in the image (rectangular blocks), and transmitting these vectors as side-information. The Motion Transform (MT) [l] provides a new motion compensation technique that does not require the transmission of motion vectors and yet,...

Adaptive block transforms for hybrid video coding

Distributed Video Coding with Geometric Transforms

Abstract The Distributed Video Coding (DVC) paradigm is based on two well-known information theory results: the SlepianWolf and the Wyner-Ziv theorems. In a DVC codec, the correlation between video signals is exploited at the decoder, providing a flexible distribution of the computational complexity between the encoder and the decoder and error robustness to the channel errors. To exploit the c...

Variable block size transforms for hybrid video coding

Introduction

Efficient Large Size Transforms for High-Performance Video Coding

This paper describes design of transforms for extended block sizes for video coding. The proposed transforms are orthogonal integer transforms, based on a simple recursive factorization structure, and allow very compact and efficient implementations. We discuss techniques used for finding integer and scale factors in these transforms, and describe our final design. We evaluate efficiency of our...