we propose a method for medical image denoising using calculus of variations and local variance estimation by shaped windows. this method reduces any additive noise and preserves small patterns and edges of images. a pyramid structure-texture decomposition of images is used to separate noise and texture components based on local variance measures. the experimental results show that the proposed...

In this paper, we introduce pyramid-adapted shearlet systems for the three-dimensional setting, and show how one can construct frames for L(R) with this particular shearlet structure. We then introduce a generalized three-dimensional cartoon-like image model class of piecewise C smooth functions with discontinuities on a C smooth surface with 1 < α ≤ 2 and show that pyramid-adapted shearlet sys...

Abstract. We study efficient and reliable methods of capturing and sparsely representing anisotropic structures in 3D data. As a model class for multidimensional data with anisotropic features, we introduce generalized three-dimensional cartoon-like images. This function class will have two smoothness parameters: one parameter β controlling classical smoothness and one parameter α controlling a...

We consider the very challenging task of restoring images (i) which have a large number of missing pixels, (ii) whose existing pixels are corrupted by noise and (iii) the ideal image to be restored contains both cartoon and texture elements. The combination of these three properties makes this inverse problem a very difficult one. The solution proposed in this manuscript is based on directional...

In this paper we present an application on real-time face tracking and replacement. We implement this application through three sections: detection, tracking and replacement. For detection, we use haar features based cascade classifiers to detect the face, eyes and nose on both target and source images. Then face tracking is implemented by two distinct methods: CAMShift and Optical Flow. In cas...

This paper proposes a method for capturing the drawing style of cartoon from the original comic book. Given a concept drawing image of the specific comic book, our approach recovers not only the color scheme, but also the color ratio. The main technical contribution of this paper is a shading model capture and a stylized cartoon rendering. For the shading model capture, we collect RGB statistic...

We propose a novel image decomposition method to decompose an image into its cartoon and texture components. To exploit the nonlocal selfsimilarity of cartoon-plus-texture images, we construct groups by stacking together similar image patches into 3-D arrays and consider group as the basic unit of decomposition. We decompose each group via a convex optimization model consisting of 3-D cartoon a...

This paper constructs a four factors theoretical model of Chinese small and medium enterprises based on the “cartoon characters’ reputation enterprise marketing and management capabilities – protection of the cartoon image institutional environment” by literature research, case studies and investigation. The empirical study show that the greatest impact on current merchandising rights income is...

Natural images are typically a composition of cartoon and texture structures. One common task is to separate such an image into two single images, one containing the cartoon part and the other containing the texture part. Recently, a powerful class of algorithms using sparse approximation and l1 minimization has been introduced to resolve this problem, and numerous inspiring empirical results h...