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Smoothing and sharpening are two fundamental image processing operations. The latter is usually related to the former through the unsharp masking algorithm. In this paper, we develop a new type of filter which performs smoothing or…

Image and Video Processing · Electrical Eng. & Systems 2021-08-02 Guang Deng , Fernando J. Galetto , Mukhalad Al-nasrawi , Waseem Waheed

We present the bilateral solver, a novel algorithm for edge-aware smoothing that combines the flexibility and speed of simple filtering approaches with the accuracy of domain-specific optimization algorithms. Our technique is capable of…

Computer Vision and Pattern Recognition · Computer Science 2016-07-25 Jonathan T. Barron , Ben Poole

Edge-preserving image smoothing is an important step for many low-level vision problems. Though many algorithms have been proposed, there are several difficulties hindering its further development. First, most existing algorithms cannot…

Computer Vision and Pattern Recognition · Computer Science 2019-06-26 Feida Zhu , Zhetong Liang , Xixi Jia , Lei Zhang , Yizhou Yu

We examine the use of domain decomposition for potentially more efficient mean curvature flow of surface meshes, whose faces are arbitrary simple polygons. We first test traditional domain decomposition methods with and without overlap of…

Numerical Analysis · Mathematics 2026-05-13 Lenka Ptackova , Michal Outrata

The bilateral filter is an edge-preserving smoother that has diverse applications in image processing, computer vision, computer graphics, and computational photography. The filter uses a spatial kernel along with a range kernel to perform…

Computer Vision and Pattern Recognition · Computer Science 2016-05-11 Sanjay Ghosh , Kunal N. Chaudhury

Some methods based on simple regularizing geometric element transformations have heuristically been shown to give runtime efficient and quality effective smoothing algorithms for meshes. We describe the mathematical framework and a…

Computational Geometry · Computer Science 2013-07-09 Dimitris Vartziotis , Benjamin Himpel

Image smoothing represents a fundamental component of many disparate computer vision and graphics applications. In this paper, we present a unified unsupervised (label-free) learning framework that facilitates generating flexible and…

Computer Vision and Pattern Recognition · Computer Science 2018-11-08 Qingnan Fan , Jiaolong Yang , David Wipf , Baoquan Chen , Xin Tong

Image binarization is the process of separation of pixel values into two groups, white as background and black as foreground. Thresholding plays a major in binarization of images. Thresholding can be categorized into global thresholding and…

Computer Vision and Pattern Recognition · Computer Science 2012-01-26 T. Romen Singh , Sudipta Roy , O. Imocha Singh , Tejmani Sinam , Kh. Manglem Singh

We present a simple direct discretization for functionals used in the variational mesh generation and adaptation. Meshing functionals are discretized on simplicial meshes and the Jacobian matrix of the continuous coordinate transformation…

Numerical Analysis · Mathematics 2015-11-30 Weizhang Huang , Lennard Kamenski

Domain generalization aims to train models on multiple source domains so that they can generalize well to unseen target domains. Among many domain generalization methods, Fourier-transform-based domain generalization methods have gained…

Image and Video Processing · Electrical Eng. & Systems 2023-12-14 Hongyi Pan , Bin Wang , Zheyuan Zhang , Xin Zhu , Debesh Jha , Ahmet Enis Cetin , Concetto Spampinato , Ulas Bagci

We present a robust and efficient numerical framework based on a median filter scheme for solving a broad class of interface-related optimization problems, from image segmentation to topology optimization. A key innovation of our work is…

Numerical Analysis · Mathematics 2026-02-24 Sihao Cheng , Ziming Shao , Dong Wang

Generalizable Image Super-Resolution aims to enhance model generalization capabilities under unknown degradations. To achieve this goal, the models are expected to focus only on image content-related features instead of overfitting…

Computer Vision and Pattern Recognition · Computer Science 2025-09-19 Hongjun Wang , Jiyuan Chen , Zhengwei Yin , Xuan Song , Yinqiang Zheng

Mesh denoising is a critical technology in geometry processing that aims to recover high-fidelity 3D mesh models of objects from their noise-corrupted versions. In this work, we propose a learning-based normal filtering scheme for mesh…

Graphics · Computer Science 2019-11-15 Wenbo Zhao , Xianming Liu , Yongsen Zhao , Xiaopeng Fan , Debin Zhao

Bilateral filters have wide spread use due to their edge-preserving properties. The common use case is to manually choose a parametric filter type, usually a Gaussian filter. In this paper, we will generalize the parametrization and in…

Computer Vision and Pattern Recognition · Computer Science 2015-11-30 Varun Jampani , Martin Kiefel , Peter V. Gehler

In computer vision, image processing and computer graphics, image smoothing filtering is a very basic and important task and to be expected possessing good edge-preserving smoothing property. Here we address the problem that the…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 Qian Liu , Yongpeng Li , Zhihang Wang

The total generalized variation extends the total variation by incorporating higher-order smoothness. Thus, it can also suffer from similar discretization issues related to isotropy. Inspired by the success of novel discretization schemes…

Numerical Analysis · Mathematics 2023-03-17 Lea Bogensperger , Antonin Chambolle , Alexander Effland , Thomas Pock

This paper presents a simple and effective two-stage mesh denoising algorithm, where in the first stage, the face normal filtering is done by using the bilateral normal filtering in the robust statistics framework. Tukey's bi-weight…

Graphics · Computer Science 2017-11-22 Sunil Kumar Yadav , Ulrich Reitebuch , Konrad Polthier

Image processing researchers commonly assert that "median filtering is better than linear filtering for removing noise in the presence of edges." Using a straightforward large-$n$ decision-theory framework, this folk-theorem is seen to be…

Statistics Theory · Mathematics 2009-09-29 Ery Arias-Castro , David L. Donoho

Median filtering is a cornerstone of computational image processing. It provides an effective means of image smoothing, with minimal blurring or softening of edges, invariance to monotonic transformations such as gamma adjustment, and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Ben Weiss

Optimization-based filtering smoothes an image by minimizing a fidelity function and simultaneously preserves edges by exploiting a sparse norm penalty over gradients. It has obtained promising performance in practical problems, such as…

Graphics · Computer Science 2013-05-20 Chengxi Ye , Dacheng Tao , Mingli Song , David W. Jacobs , Min Wu