Depth modeling modes complexity control system for the 3D-HEVC video encoder

Abstract

Abstract-This paper presents a complexity control system for depth maps intra-frame prediction of the 3D-High Efficiency Video Coding (3D-HEVC) standard. The proposed system uses a Proportional-Integral-Derivative controller over the Simplified Edge Detector heuristic to skip the Depth Modeling Modes (DMMs) evaluation dynamically according to a defined target rate. When analyzing the proposed system under Common Test Conditions, the proposed controller stabilizes the system to the target rate (i.e., the percentage of DMMs evaluation) after encoding a few frames, with negligible encoding efficiency impacts. The BD-rate degradation varies from 0.50% to 0.20%, on average, when the target rates vary from 5% to 15%. These target rates imply in an aggressive reduction in the DMMs evaluations, skipping the DMMs from 85% to 95% of the cases.

Fast Depth Intra Coding Based on Decision Tree in 3D-HEVC

“…In [4], the distortion calculation in DMM search is simplified as the squared Euclidean distance of variances (SEDV), and a probability-based early decision (PBED) method was proposed by studying the correlation between rough mode cost and final mode decision. Other algorithms for block level fast intra mode decision could be found in [5]- [9], which mainly focus on the acceleration of complex modes such as DMM. On the other hand, a coding block quad-tree pruning algorithm was designed in [10] by considering the variance of blocks and the estimated distortion of single depth intra mode [15].…”