A Unified Curvature Definition for Regular, Polygonal, and Digital Planar CurvesSpringer Science and Business Media LLC - Tập 80 - Trang 104-124 - 2008
Hairong Liu, Longin Jan Latecki, Wenyu Liu
In this paper, we propose a new definition of curvature, called visual curvature. It is based on statistics of the extreme points of the height functions computed over all directions. By gradually ignoring relatively small heights, a multi-scale curvature is obtained. The theoretical properties and the experiments presented demonstrate that multi-scale visual curvature is stable, even in the prese...... hiện toàn bộ
Nonlocal Image and Movie DenoisingSpringer Science and Business Media LLC - Tập 76 - Trang 123-139 - 2007
Antoni Buades, Bartomeu Coll, Jean-Michel Morel
Neighborhood filters are nonlocal image and movie filters which reduce the noise by averaging similar pixels. The first object of the paper is to present a unified theory of these filters and reliable criteria to compare them to other filter classes. A CCD noise model will be presented justifying the involvement of neighborhood filters. A classification of neighborhood filters will be proposed, i...... hiện toàn bộ
Ma trận cơ bản: Lý thuyết, thuật toán và phân tích độ ổn định Dịch bởi AI Springer Science and Business Media LLC - Tập 17 - Trang 43-75 - 1996
Quan-Tuan Luong, Olivier D. Faugeras
Trong bài báo này, chúng tôi phân tích chi tiết hình học của một cặp camera, tức là một thiết lập stereo. Trái ngược với những gì đã được thực hiện trong quá khứ và vẫn đang được sử dụng hiện nay, chẳng hạn như trong phân tích stereo hoặc chuyển động, chúng tôi không giả định rằng các tham số nội tại của các camera là đã biết (tọa độ của các điểm chính, tỷ lệ pixel và tiêu cự). Điều này quan trọng...... hiện toàn bộ
#ma trận cơ bản #hình học stereo #ước lượng #thị giác máy tính ba chiều #ổn định
Improving Bag-of-Features for Large Scale Image SearchSpringer Science and Business Media LLC - Tập 87 - Trang 316-336 - 2009
Hervé Jégou, Matthijs Douze, Cordelia Schmid
This article improves recent methods for large scale image search. We first analyze the bag-of-features approach in the framework of approximate nearest neighbor search. This leads us to derive a more precise representation based on Hamming embedding (HE) and weak geometric consistency constraints (WGC). HE provides binary signatures that refine the matching based on visual words. WGC filters matc...... hiện toàn bộ
Style-Hallucinated Dual Consistency Learning: A Unified Framework for Visual Domain GeneralizationSpringer Science and Business Media LLC - - Trang 1-17 - 2023
Yuyang Zhao, Zhun Zhong, Na Zhao, Nicu Sebe, Gim Hee Lee
Domain shift widely exists in the visual world, while modern deep neural networks commonly suffer from severe performance degradation under domain shift due to poor generalization ability, which limits real-world applications. The domain shift mainly lies in the limited source environmental variations and the large distribution gap between source and unseen target data. To this end, we propose a u...... hiện toàn bộ
Generative Adversarial Network Applications in Industry 4.0: A ReviewSpringer Science and Business Media LLC - - Trang 1-60 - 2024
Chafic Abou Akar, Rachelle Abdel Massih, Anthony Yaghi, Joe Khalil, Marc Kamradt, Abdallah Makhoul
The breakthrough brought by generative adversarial networks (GANs) in computer vision (CV) applications has gained a lot of attention in different fields due to their ability to capture the distribution of a dataset and generate high-quality similar images. From one side, this technology has been rapidly adopted as an alternative to traditional applications and introduced novel perspectives in dat...... hiện toàn bộ
Beyond Covariance: SICE and Kernel Based Visual Feature RepresentationSpringer Science and Business Media LLC - Tập 129 - Trang 300-320 - 2020
Jianjia Zhang, Lei Wang, Luping Zhou, Wanqing Li
The past several years have witnessed increasing research interest on covariance-based feature representation. Originally proposed as a region descriptor, it has now been used as a general representation in various recognition tasks, demonstrating promising performance. However, covariance matrix has some inherent shortcomings such as singularity in the case of small sample, limited capability in ...... hiện toàn bộ