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Interlayer Simplified Depth Coding for Quality Scalability on 3D High Efficiency Video Coding
"... A quality scalable extension design is proposed for the upcoming 3D video on the emerging standard for High Efficiency Video Coding (HEVC). A novel interlayer simplified depth coding (SDC) prediction tool is added to reduce the amount of bits for depth maps representation by exploiting the correlat ..."
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A quality scalable extension design is proposed for the upcoming 3D video on the emerging standard for High Efficiency Video Coding (HEVC). A novel interlayer simplified depth coding (SDC) prediction tool is added to reduce the amount of bits for depth maps representation by exploiting the correlation between coding layers. To further improve the coding performance, the coded prediction quadtree and texture data from corresponding SDC-coded blocks in the base layer can be used in interlayer simplified depth coding. In the proposed design, the multiloop decoder solution is also extended into the proposed scalable scenario for texture views and depth maps, and will be achieved by the interlayer texture prediction method. The experimental results indicate that the average Bjøntegaard Delta bitrate decrease of 54.4% can be gained in interlayer simplified depth coding prediction tool on multiloop decoder solution compared with simulcast. Consequently, significant rate savings confirm that the proposed method achieves better performance.
HYBRID DCT-WIENER-BASED INTERPOLATION VIA LEARNT WIENER FILTER Kwok-Wai Hung and Wan-Chi Siu
"... The hybrid DCT-Wiener-based (DCT-WB) interpolation scheme provides a powerful framework to interpolate an image by utilizing the information in both spatial and DCT domain. In this paper, we investigate the bottleneck of this hybrid scheme and propose a 2D non-separable block-based Wiener filter for ..."
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The hybrid DCT-Wiener-based (DCT-WB) interpolation scheme provides a powerful framework to interpolate an image by utilizing the information in both spatial and DCT domain. In this paper, we investigate the bottleneck of this hybrid scheme and propose a 2D non-separable block-based Wiener filter for the hybrid scheme. The Wiener filter is learnt using training image pairs through the minimum mean squares error estimation. The proposed Wiener filter resolves the quarter-pixel shift issue and provides much better performance over the original 1D 6-tap pixel-based Wiener filter. Experimental results show that incorporating the proposed Wiener filter into the hybrid scheme improves the PSNR (0.44 dB), SSIM and subjective quality for our extensive experimental work on testing images with various contents.
Research Article Interlayer Simplified Depth Coding for Quality Scalability on 3D High Efficiency Video Coding
"... Copyright © 2014 Mengmeng Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. A quality scalable extension design is propose ..."
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Copyright © 2014 Mengmeng Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. A quality scalable extension design is proposed for the upcoming 3D video on the emerging standard for High Efficiency Video Coding (HEVC). A novel interlayer simplified depth coding (SDC) prediction tool is added to reduce the amount of bits for depth maps representation by exploiting the correlation between coding layers. To further improve the coding performance, the coded prediction quadtree and texture data from corresponding SDC-coded blocks in the base layer can be used in interlayer simplified depth coding. In the proposed design, the multiloop decoder solution is also extended into the proposed scalable scenario for texture views and depth maps, and will be achieved by the interlayer texture prediction method. The experimental results indicate that the average Bjøntegaard Delta bitrate decrease of 54.4 % can be gained in interlayer simplified depth coding prediction tool on multiloop decoder solution compared with simulcast. Consequently, significant rate savings confirm that the proposed method achieves better performance. 1.
