A note on the gradient of a multi-image
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Scale-Space and Edge Detection Using Anisotropic Diffusion
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Feature-oriented image enhancement using shock filters
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Multichannel Texture Analysis Using Localized Spatial Filters
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Nonlinear total variation based noise removal algorithms
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Image processing: flows under min/max curvature and mean curvature
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Texture Features for Browsing and Retrieval of Image Data
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Image Representation Using 2D Gabor Wavelets
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Planar shape enhancement and exaggeration
Graphical Models and Image Processing
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Image Processing via the Beltrami Operator
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Multiscale Texture Enhancement
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Anisotropic diffusion of multivalued images with applications to color filtering
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A general framework for low level vision
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Modified curvature motion for image smoothing and enhancement
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A Theoretical Framework for Convex Regularizers in PDE-Based Computation of Image Motion
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Fast Difference Schemes for Edge Enhancing Beltrami Flow
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Geometry Motivated Variational Segmentation for Color Images
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Geodesic Active Contours Applied to Texture Feature Space
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Image Denoising and Decomposition with Total Variation Minimization and Oscillatory Functions
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Affine Invariant Flows in the Beltrami Framework
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Isotropic Energies, Filters and Splines for Vector Field Regularization
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Fast Evolution of Image Manifolds and Application to Filtering and Segmentation in 3D Medical Images
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Vector-Valued Image Regularization with PDEs: A Common Framework for Different Applications
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Fast Anisotropic Smoothing of Multi-Valued Images using Curvature-Preserving PDE's
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We extend the geometric framework introduced in Sochen et al. (IEEE Trans. on Image Processing, 7(3):310–318, 1998) for image enhancement. We analyze and propose enhancement techniques that selectively smooth images while preserving either the multi-channel edges or the orientation-dependent texture features in them. Images are treated as manifolds in a feature-space. This geometrical interpretation lead to a general way for grey level, color, movies, volumetric medical data, and color-texture image enhancement.We first review our framework in which the Polyakov action from high-energy physics is used to develop a minimization procedure through a geometric flow for images. Here we show that the geometric flow, based on manifold volume minimization, yields a novel enhancement procedure for color images. We apply the geometric framework and the general Beltrami flow to feature-preserving denoising of images in various spaces.Next, we introduce a new method for color and texture enhancement. Motivated by Gabor's geometric image sharpening method (Gabor, Laboratory Investigation, 14(6):801–807, 1965), we present a geometric sharpening procedure for color images with texture. It is based on inverse diffusion across the multi-channel edge, and diffusion along the edge.