Title :
Video Compression Using Nested Quadtree Structures, Leaf Merging, and Improved Techniques for Motion Representation and Entropy Coding
Author :
Marpe, Detlev ; Schwarz, Heiko ; Bosse, Sebastian ; Bross, Benjamin ; Helle, Philipp ; Hinz, Tobias ; Kirchhoffer, Heiner ; Lakshman, Haricharan ; Nguyen, Tung ; Oudin, Simon ; Siekmann, Mischa ; Sühring, Karsten ; Winken, Martin ; Wiegand, Thomas
Author_Institution :
Image & Video Coding Group, Fraunhofer Inst. for Telecommun.-Heinrich Hertz Inst., Berlin, Germany
Abstract :
Abstract-A video coding architecture is described that is based on nested and pre-configurable quadtree structures for flexible and signal-adaptive picture partitioning. The primary goal of this partitioning concept is to provide a high degree of adaptability for both temporal and spatial prediction as well as for the purpose of space-frequency representation of prediction residuals. At the same time, a leaf merging mechanism is included in order to prevent excessive partitioning of a picture into prediction blocks and to reduce the amount of bits for signaling the prediction signal. For fractional-sample motion-compensated prediction, a fixed-point implementation of the maximal-order minimum-support algorithm is presented that uses a combination of infinite impulse response and FIR filtering. Entropy coding utilizes the concept of probability interval partitioning entropy codes that offers new ways for parallelization and enhanced throughput. The presented video coding scheme was submitted to a joint call for proposals of ITU-T Visual Coding Experts Group and ISO/IEC Moving Picture Experts Group and was ranked among the five best performing proposals, both in terms of subjective and objective quality.
Keywords :
data compression; entropy codes; tree data structures; video coding; FIR filtering; ISO/IEC Moving Picture Experts Group; ITU-T Visual Coding Experts Group; entropy coding; fixed-point implementation; fractional-sample motion-compensated prediction; infinite impulse response; leaf merging; maximal-order minimum-support algorithm; motion representation; nested quadtree structures; probability interval partitioning entropy codes; signal-adaptive picture partitioning; space-frequency representation; spatial prediction; temporal prediction; video coding architecture; video compression; Automatic voltage control; Encoding; Interpolation; Merging; Moment methods; Transforms; Video coding; High efficiency video coding;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
DOI :
10.1109/TCSVT.2010.2092615