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The increasing availability of texture+depth (RGBD) content has recently motivated research toward the design of image features able to employ the additional geometrical information provided by depth. Indeed, such features are supposed to provide higher robustness than conventional 2D features in the presence of large changes of camera viewpoint. In this paper, we consider the first stage of RGBD...
In this paper we design a smoothing filter for texture+depth images based on anisotropic diffusion. Our proposed filter enables to generate a scale space on the texture image guided by depth information, and is linear and numerically stable. We show experimentally that using scene geometry preserves the internal structure of 3D surfaces (e.g., it avoids smoothing across object boundaries). As a consequence,...
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