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The popularity of 3D content is on the rise since it provides an immersive experience to viewers. In this situation, depth-image-based rendering (DIBR) has taken on an important role in 3D technology due to its low bandwidth cost and ease of depth configuration. Noting that the viewer could record provided center view or synthesized views for illegal distribution, it is clear that copyright protection...
Three dimensional (3D) video technologies have made noticeable progress and become common. The 3D videos using depth image based rendering (DIBR) technique are getting the spotlight due to its visual reality, however, they are exposed to illegal distribution. To protect 3D video contents from copyright infringement, a 3D video watermarking scheme can be employed. Since 3D display itself may give rise...
This paper proposes a composite mask based watermarking method, which improves perceptual quality of videos watermarked by traditional video watermarking scheme. The composite mask including noise visibility function (NVF) mask, adaptive dithering mask, and contour mask considers human visual system (HVS). The adaptive dithering mask solves the block artifact problem caused by expanding the watermark...
This paper proposes an adaptive edge-preserving smoothing and detail enhancement for video preprocessing of H.263. The proposed method consists of two steps: edge preserving smoothing using a motion-adaptive bilateral filter and detail enhancement using an adaptive high-boost filter. In the first step, the motion-adaptive bilateral filter preserves edges in region of interest (ROI) and smoothes noise...
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