Fast depth map coding based on virtual view quality

Yang, Chao; An, Ping; Shen, Liquan; Ma, Ran; Feng, Nina

doi:10.1016/j.image.2016.05.015

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…The coding time-saving (TS) is calculated by Equation (22). We evaluate the coding efficiency by Bjøntegaard Delta Bitrate (BD-Bitrate) and Bjøntegaard Delta Peak Signal-to-Noise Rate (BD-PSNR) [40,41].…”

Section: Resultsmentioning

confidence: 99%

“…Through Depth Sensitivity Field (DSF), Shao et al [21] made the estimation of the allowable depth distortion of left and right virtual views for quantization and adjusted the Lagrangian multiplier to accelerate the CU encoding. Yang et al [22] improved the encoding efficiency with low computational complexity by adjusting the quantization parameters (QP) in different gradient regions and employing Virtual View Distortion Estimation (VVDE) in RDO. Also, CU sizes were restricted based on the quality of synthesized views.…”

Section: Introductionmentioning

confidence: 99%

“…Yang et al. [22] improved the encoding efficiency with low computational complexity by adjusting the quantization parameters (QP) in different gradient regions and employing Virtual View Distortion Estimation (VVDE) in RDO. Also, CU sizes were restricted based on the quality of synthesized views.…”

Section: Introductionmentioning

confidence: 99%

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Vision‐oriented algorithm for fast decision in 3D video coding

Lin

Chen

Yeh

et al. 2022

IET Image Processing

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This paper designs a novel method to reduce the coding complexity of 3D‐HEVC encoder by utilizing the properties of human visual perception. Two vision‐oriented edge detections are proposed: for colour texture detection, the authors adopt the Just‐Noticeable Distortion (JND); for depth map, the authors combine the Sample Adaptive Offset (SAO) and the Just Noticeable Depth Difference (JNDD) model. The authors also analyse the properties of colour texture and depth map to classify the coding tree unit (CTU) into various kinds of types, including complex‐edge CTU, moderate‐edge CTU and homogeneous CTU. Besides, fast mode decisions and early termination criteria are performed individually on each type of CTUs according to their characteristics. Especially for those CTUs with more edge information, the proposed projection‐based fast mode decision and residual‐based early termination preserve important colour texture while speeding up the coding at the same time. The proposed vision‐oriented algorithm reduces 31.981% of the overall average coding time with only 1.580% BD‐Bitrate increase. Experimental results show that the proposed algorithm can provide considerable time‐saving while still maintain the video quality, which outperforms the previous researches.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%