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Improved Spatial Prediction for 3D Holoscopic Image and Video Coding

Conti, C. ; Lino, J. ; Nunes, P. ; Soares, L. D. ; Correia, P.L.

Improved Spatial Prediction for 3D Holoscopic Image and Video Coding, Proc European Signal Processing Conference EUSIPCO, Barcelona, Spain, Vol. ., pp. . - ., August, 2011.

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Holoscopic imaging, also known as integral imaging, is promising to change the market for 3D television since it provides a solution for glassless 3D. This paper starts by making a brief presentation of the general concepts behind holoscopic imaging, with a special emphasis on the spatial correlations that are present in this type of content, which are caused by the micro-lens array used both for acquisition and display. Behind this micro-lens array, many micro-images with a high cross-correlation between them are formed; in these micro-images only one pixel is viewable from a given obser-vation point. This high cross-correlation can be seen as a form of self-similarity within the holoscopic image and it can effectively be exploited for coding. Therefore, in order to explore this self-similarity of holoscopic images, a novel scheme for spatial predic-tion is proposed in this paper. The proposed scheme can be used for coding both still images and intra-frames in video. Experimen-tal results based on a modified H.264/AVC video codec that can handle 3D holoscopic images and video are presented and clearly show the advantages of using this approach.