Fast Context-Adaptive Mode Decision Algorithm for Scalable Video Coding With Combined Coarse-Grain Quality Scalability (CGS) and Temporal Scalability

A fast mode decision algorithm applied to Coarse-Grain quality Scalable Video Coding

A fast mode decision algorithm is proposed for a Coarse-Grain Scalable (CGS) video encoder based on the encoding characteristics of quality Scalable Video Coding (SVC). First, candidate modes and coding orders are predicted, based on inter-layer and spatial correlations. Three early termination methods are then proposed based on CGS encoding structure. Finally, all candidate modes are checked s...

Fast Mode Decision Algorithm for H.264/AVC-to-SVC Transcoding with Temporal Scalability

Scalable Video Coding (SVC) uses a notion of layers within the encoded bitstream for providing temporal, spatial and quality scalability, separately or combined. By truncating layers the bitstream can be adapted to devices with different characteristics and to varying network constraints. Since the majority of the existing video content is encoded using H.264/AVC without scalability, they canno...

A CONTEXT-BASED ADAPTIVE FAST INTRA_4x4 PREDICTION MODE DECISION ALGORITHM FOR H.264/AVC VIDEO CODING

In this paper, we propose a context-based adaptive fast Intra_4x4 prediction mode decision algorithm for H.264/AVC. Firstly, a 3-order Markov random field model is introduced to describe the spatial distribution of RD optimal Intra_4x4 prediction modes at picture level. Secondly, in a neighboring context specified by this model, only a small set of candidate modes are chosen for RDO calculation...

CBP-Based Fast Mode Decision for Scalable Video Coding

In order to speedup the encoding processing of Scalable Video Coding (SVC), a CBP (Coded Block Pattern)-based fast mode decision algorithm is proposed in the paper. The CBP value is the syntax used at each Macroblock (MB) header to indicate whether an MB contains residual information or not. By the CBP values and MB modes of adjacent MB in Enhancement Layer (EL) and the co-located Base Layer (B...

A Scalable and Adaptive Temporal Segmentation Algorithm for Video Coding