Abstract
The Scalable High Efficiency Video Coding (SHVC) has been proposed to improve the coding efficiency. However, this additional extension generally results an important coding complexity. Several studies were performed to overcome the complexity through algorithmic optimizations that led to an encoding time reduction. In fact, mode decision analysis is imperatively important in order to have an idea about the partitioning modes based on two parameters, such as prediction unit size and frame type. This paper presents statistical observations at two levels: coding units (CUs) and prediction units (PUs) selected by the encoder. Analysis was performed for several test sequences with different motion and texture characteristics. The experimental results show that the percentage of choosing coding or prediction unit size and type depends on sequence parameters, frame type, and temporal level.
Highlights
Nowadays, the demand on digital signal processing applications is more and more increasing
When comparing Scalable High Efficiency Video Coding (SHVC) extension to different scenarios as described above, we note that even when bit rate performance depends on sequence features, the scalable extension is more efficient and preferment compared to other scenarios due to the contribution of the new inter layer prediction coding tool
This section is organized as follow: the first part gives the statistics at coding units (CUs) level for Base Layer (BL) and Enhancement Layers (EL), while the second part gives the statistics at prediction units (PUs) level for BL and EL
Summary
The demand on digital signal processing applications is more and more increasing. In order to overcome this heterogeneity, numerous versions of the same video are stored in the server side to gratify various needs of clients and are delivered using simulcast coding. This leads to increasing the video bit rates and maximizing the storage costs. A new video coding standard was developed with improved compressing tools. SHVC was proposed as a scalable extension of the High Efficiency Video Coding (HEVC) standard [1]. The remainder of this paper is organized as follows: In section 2, an overview of the scalable extension of HEVC is presented by detailing its major aspects.
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