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Since advanced 3D video systems employ depth information to support free-viewpoint navigation and comfortable 3D video viewing, efficient depth map coding is necessary for future 3D video systems. Most residual data in depth map coding are generated along abrupt depth discontinuities, represented by near-zero and high-magnitude values. In this paper, we model the residual data with two representative...
Realizing the very natural video by using holography technology is thought as the ultimate goal of 3D display, and it is still remained as the Holy Grail to be explored. Difficulties lie on two challenging issues: development of the Giga-pixel holographic video display which is feasible and meaningful for commercialization and fast calculation algorithms for the real-time holographic video generation...
This paper focuses on sharpening boundaries in depth maps for multi-view video coding. Artifacts around boundaries degrade the quality of synthesized images. In order to encounter this problem, after applying the deblocking filter for each frame, we create a binary edge map and find the location of blocks that need to be altered. Subsequently, we apply a boundary sharpening filter which uses pixel...
In this paper, we present a new depth map coding scheme to improve coding efficiency. For this purpose, we developed an adaptive bilateral filter that restores the coded depth maps in accordance with the estimated noise variance. More specifically, each pixel is classified in such a way that the distortion cost is minimized and is restored depending on local noise level. The restored picture is used...
To improve rendered view quality in a 3-D video system, we propose to encode and transmit depth transition data, which represents, for each pixel in a frame, the location in between two existing views where the depth corresponding to that pixel changes. Given the highly localized and non-linear characteristics of rendered view distortion, it is possible to achieve better coding performance by providing...
Multiview 3D videos can efficiently be represented using a mixed resolution multiview 3D video format that has a number of color and depth information with different resolutions. However, such a mixed resolution multiview video format would have a shortcoming on synthesizing virtual views between a low and a high resolution view. This paper provides an approach to synthesize virtual image from multi-view...
The objective of this work is to develop a new 3-D video coding system which can provide better coding efficiency with improved subjective quality as compared to existing 3-D video systems. We have analyzed the distortions that occur in rendered views generated using depth image based rendering (DIBR) and classified them in order to evaluate their impact on subjective quality. As a result, we found...
In this work a new set of edge-adaptive transforms (EATs) is presented as an alternative to the standard DCTs used in image and video coding applications. These transforms avoid filtering across edges in each image block, thus, they avoid creating large high frequency coefficients. These transforms are then combined with the DCT in H.264/AVC and a transform mode selection algorithm is used to choose...
This work proposes a new intra prediction coding scheme for depth map images used in view interpolation. The main goal is to design a prediction scheme which can reduce the prediction error energy in blocks with arbitrary edge shapes. This will reduce the rate needed to encode such blocks while also eliminating some of the annoying artifacts caused by quantization. Since depth maps typically consist...
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