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Unsupervised anomaly detection has gained significant attention in the field of medical imaging due to its capability of relieving the costly pixel-level annotation. To achieve this, modern approaches usually utilize generative models to…

Image and Video Processing · Electrical Eng. & Systems 2024-01-22 Rui Xu , Yunke Wang , Bo Du

Deep subspace clustering methods are now prominent in clustering, typically using fully connected networks and a self-representation loss function. However, these methods often struggle with overfitting and lack interpretability. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Xianlu Li , Nicolas Nadisic , Shaoguang Huang , Aleksandra Pižurica

The ability to synthesize personalized group photos and specify the positions of each identity offers immense creative potential. While such imagery can be visually appealing, it presents significant challenges for existing technologies. A…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Yimeng Zhang , Tiancheng Zhi , Jing Liu , Shen Sang , Liming Jiang , Qing Yan , Sijia Liu , Linjie Luo

We present a new technique that enables manifold learning to accurately embed data manifolds that contain holes, without discarding any topological information. Manifold learning aims to embed high dimensional data into a lower dimensional…

Robotics · Computer Science 2022-03-11 Thomas Cohn , Nikhil Devraj , Odest Chadwicke Jenkins

The manifold hypothesis, which assumes that data lies on or close to an unknown manifold of low intrinsic dimension, is a staple of modern machine learning research. However, recent work has shown that real-world data exhibits distinct…

Machine Learning · Computer Science 2023-06-16 Julius von Rohrscheidt , Bastian Rieck

This thesis surveys the research in patch-based synthesis and algorithms for finding correspondences between small local regions of images. We additionally explore a large kind of applications of this new fast randomized matching technique.…

Graphics · Computer Science 2020-05-14 Hadi Abdi Khojasteh

Image inpainting is the task of plausibly restoring missing pixels within a hole region that is to be removed from a target image. Most existing technologies exploit patch similarities within the image, or leverage large-scale training data…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Yuqian Zhou , Connelly Barnes , Eli Shechtman , Sohrab Amirghodsi

We study a simple unsupervised regularization scheme for autoencoders called Manifold-Matching (MMAE): we align the pairwise distances in the latent space to those of the input data space by minimizing mean squared error. Because alignment…

Machine Learning · Computer Science 2026-03-18 Laurent Cheret , Vincent Létourneau , Isar Nejadgholi , Chris Drummond , Hussein Al Osman , Maia Fraser

Traditional feature-based image stitching technologies rely heavily on feature detection quality, often failing to stitch images with few features or low resolution. The learning-based image stitching solutions are rarely studied due to the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Lang Nie , Chunyu Lin , Kang Liao , Shuaicheng Liu , Yao Zhao

Achieving precise medical image segmentation is vital for effective treatment planning and accurate disease diagnosis. Traditional fully-supervised deep learning methods, though highly precise, are heavily reliant on large volumes of…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Sicheng Shen , Jinming Cao , Yifang Yin , Roger Zimmermann

Image Completion refers to the task of filling in the missing regions of an image and Image Extrapolation refers to the task of extending an image at its boundaries while keeping it coherent. Many recent works based on GAN have shown…

Computer Vision and Pattern Recognition · Computer Science 2020-06-05 Sai Hemanth Kasaraneni , Abhishek Mishra

For many years, image over-segmentation into superpixels has been essential to computer vision pipelines, by creating homogeneous and identifiable regions of similar sizes. Such constrained segmentation problem would require a clear…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Rémi Giraud , Michaël Clément

Generative models based on normalizing flows are very successful in modeling complex data distributions using simpler ones. However, straightforward linear interpolations show unexpected side effects, as interpolation paths lie outside the…

Machine Learning · Statistics 2025-04-09 Samuel G. Fadel , Sebastian Mair , Ricardo da S. Torres , Ulf Brefeld

We present a scalable low dimensional manifold model for the reconstruction of noisy and incomplete hyperspectral images. The model is based on the observation that the spatial-spectral blocks of a hyperspectral image typically lie close to…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Wei Zhu , Zuoqiang Shi , Stanley Osher

Manifold learning offers nonlinear dimensionality reduction of high-dimensional datasets. In this paper, we bring geometry processing to bear on manifold learning by introducing a new approach based on metric connection for generating a…

Machine Learning · Computer Science 2018-11-05 Max Budninskiy , Glorian Yin , Leman Feng , Yiying Tong , Mathieu Desbrun

With the development and widespread application of digital image processing technology, image splicing has become a common method of image manipulation, raising numerous security and legal issues. This paper introduces a new splicing image…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Ao Xiang , Jingyu Zhang , Qin Yang , Liyang Wang , Yu Cheng

The knowledge that data lies close to a particular submanifold of the ambient Euclidean space may be useful in a number of ways. For instance, one may want to automatically mark any point far away from the submanifold as an outlier or to…

In this paper, we consider the problem of manifold approximation with affine subspaces. Our objective is to discover a set of low dimensional affine subspaces that represents manifold data accurately while preserving the manifold's…

Machine Learning · Computer Science 2015-09-08 Sofia Karygianni , Pascal Frossard

Traditional feature extraction and projection techniques, such as Principal Component Analysis, struggle to adequately represent X-Ray Transmission (XRT) Multi-Energy (ME) images, limiting the performance of neural networks in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Fethi Harkat , Guillaume Gey , Valérie Perrier , Kévin Polisano , Tiphaine Deuberet

Image superresolution methods process an input image sequence of a scene to obtain a still image with increased resolution. Classical approaches to this problem involve complex iterative minimization procedures, typically with high…

Computer Vision and Pattern Recognition · Computer Science 2007-05-23 Carlos Miravet , Francisco B. Rodriguez