Simplified depth map intra coding with an optional depth lookup table

Jäger, Fabian

doi:10.1109/ic3d.2012.6615142

Cited by 27 publications

(20 citation statements)

References 3 publications

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“…Depth Lookup Table [21], [23] was proposed to reduce depth residue bitrate using a restricted set of valid depth values. 3D-HEVC constructs the DLT based on the depth values used in each group of pictures (GOP) of the input sequence, and it transmits the DLT information to the decoder.…”

Section: Depth Lookup Tablementioning

confidence: 99%

Intra Predictive Depth Map Coding Using Flexible Block Partitioning

Lucas

Wegner

Rodrigues

et al. 2015

IEEE Trans. on Image Process.

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A complete encoding solution for efficient intra-based depth map compression is proposed in this paper. The algorithm, denominated predictive depth coding (PDC), was specifically developed to efficiently represent the characteristics of depth maps, mostly composed by smooth areas delimited by sharp edges. At its core, PDC involves a directional intra prediction framework and a straightforward residue coding method, combined with an optimized flexible block partitioning scheme. In order to improve the algorithm in the presence of depth edges that cannot be efficiently predicted by the directional modes, a constrained depth modeling mode, based on explicit edge representation, was developed. For residue coding, a simple and low complexity approach was investigated, using constant and linear residue modeling, depending on the prediction mode. The performance of the proposed intra depth map coding approach was evaluated based on the quality of the synthesized views using the encoded depth maps and original texture views. The experimental tests based on all intra configuration demonstrated the superior rate-distortion performance of PDC, with average bitrate savings of 6%, when compared with the current state-of-the-art intra depth map coding solution present in the 3D extension of a high-efficiency video coding (3D-HEVC) standard. By using view synthesis optimization in both PDC and 3D-HEVC encoders, the average bitrate savings increase to 14.3%. This suggests that the proposed method, without using transform-based residue coding, is an efficient alternative to the current 3D-HEVC algorithm for intra depth map coding.

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Section: Depth Lookup Tablementioning

confidence: 99%

Intra Predictive Depth Map Coding Using Flexible Block Partitioning

Lucas

Wegner

Rodrigues

et al. 2015

IEEE Trans. on Image Process.

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“…This residual data can contain one constant value or two constant values from a regular depth mode or two constant values or from a DMM mode. It also supports a depth look-up table (DLT) to convert the depth values to a reduced dynamic range, giving coding gains for sequences with reduced depth value ranges [17]. SDC can be applied to both intra and inter prediction, including all depth intra prediction, the DMM modes, as well as all Intra prediction modes as in HEVC [18].…”

Section: Segment-wise DC Coding (Sdc)mentioning

confidence: 99%

HEVC-Compatible Extensions for Advanced Coding of 3D and Multiview Video

Vetro

Chen

Mueller

2015

2015 Data Compression Conference

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This article provides an overview of standardized extensions of HEVC for the advanced coding of 3D and multiview video. In those extensions, new coding tools that better exploit the inter-view redundancy of the multiview texture videos have been developed. Additionally, dedicated tools for the improved coding of depth have been extensively studied and incorporated into the standard. In this paper, the performance of these extensions is assessed, and experimental results demonstrate notable gains in coding efficiency.

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“…Simplified depth coding (SDC) [12] is used if DMM and RBC modes are used. SDC adds one partition per PU to model smooth regions.…”

Section: D-hevc Toolsmentioning

confidence: 99%