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Image convolution with complex kernels is a fundamental operation in photography, scientific imaging, and animation effects, yet direct dense convolution is computationally prohibitive on resource-limited devices. Existing approximations,…

图形学 · 计算机科学 2026-05-20 Zhizhen Wu , Zhe Cao , Yuchi Huo

The superior performance of Deformable Convolutional Networks arises from its ability to adapt to the geometric variations of objects. Through an examination of its adaptive behavior, we observe that while the spatial support for its neural…

计算机视觉与模式识别 · 计算机科学 2018-11-29 Xizhou Zhu , Han Hu , Stephen Lin , Jifeng Dai

We introduce a novel weighted convolution operator that enhances traditional convolutional neural networks (CNNs) by integrating a spatial density function into the convolution operator. This extension enables the network to differentially…

计算机视觉与模式识别 · 计算机科学 2025-06-02 Simone Cammarasana , Giuseppe Patanè

Deep neural networks face many problems in the field of hyperspectral image classification, lack of effective utilization of spatial spectral information, gradient disappearance and overfitting as the model depth increases. In order to…

计算机视觉与模式识别 · 计算机科学 2023-07-14 Guandong Li

Current descriptors for global localization often struggle under vast viewpoint or appearance changes. One possible improvement is the addition of topological information on semantic objects. However, handcrafted topological descriptors are…

Deep neural networks have made remarkable progresses on various computer vision tasks. Recent works have shown that depth, width and shortcut connections of networks are all vital to their performances. In this paper, we introduce a method…

计算机视觉与模式识别 · 计算机科学 2018-04-17 Wenqi Liu , Kun Zeng

Nonlocal self-similarity within natural images has become an increasingly popular prior in deep-learning models. Despite their successful image restoration performance, such models remain largely uninterpretable due to their black-box…

图像与视频处理 · 电气工程与系统科学 2023-06-06 Nikola Janjušević , Amirhossein Khalilian-Gourtani , Adeen Flinker , Yao Wang

We define the object detection from imagery problem as estimating a very large but extremely sparse bounding box dependent probability distribution. Subsequently we identify a sparse distribution estimation scheme, Directed Sparse Sampling,…

计算机视觉与模式识别 · 计算机科学 2017-07-24 Lachlan Tychsen-Smith , Lars Petersson

Recent advancements in keypoint detection and descriptor extraction have shown impressive performance in local feature learning tasks. However, existing methods generally exhibit suboptimal performance under extreme conditions such as…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Jingtai He , Gehao Zhang , Tingting Liu , Songlin Du

In sparse coding, we attempt to extract features of input vectors, assuming that the data is inherently structured as a sparse superposition of basic building blocks. Similarly, neural networks perform a given task by learning features of…

机器学习 · 计算机科学 2022-02-16 Deborah Pereg , Israel Cohen , Anthony A. Vassiliou

Convolutional Neural Networks (CNNs), architectures consisting of convolutional layers, have been the standard choice in vision tasks. Recent studies have shown that Vision Transformers (VTs), architectures based on self-attention modules,…

计算机视觉与模式识别 · 计算机科学 2022-01-24 Kishaan Jeeveswaran , Senthilkumar Kathiresan , Arnav Varma , Omar Magdy , Bahram Zonooz , Elahe Arani

Convolutional networks are the de-facto standard for analyzing spatio-temporal data such as images, videos, and 3D shapes. Whilst some of this data is naturally dense (e.g., photos), many other data sources are inherently sparse. Examples…

计算机视觉与模式识别 · 计算机科学 2017-11-29 Benjamin Graham , Martin Engelcke , Laurens van der Maaten

Classical shape descriptors such as Heat Kernel Signature (HKS), Wave Kernel Signature (WKS), and Signature of Histograms of OrienTations (SHOT), while widely used in shape analysis, exhibit sensitivity to mesh connectivity, sampling…

计算机视觉与模式识别 · 计算机科学 2025-03-07 Gal Yona , Roy Velich , Ron Kimmel , Ehud Rivlin

Detecting robust keypoints from an image is an integral part of many computer vision problems, and the characteristic orientation and scale of keypoints play an important role for keypoint description and matching. Existing learning-based…

计算机视觉与模式识别 · 计算机科学 2022-04-20 Jongmin Lee , Byungjin Kim , Minsu Cho

Change detection, i.e. identification per pixel of changes for some classes of interest from a set of bi-temporal co-registered images, is a fundamental task in the field of remote sensing. It remains challenging due to unrelated forms of…

计算机视觉与模式识别 · 计算机科学 2021-09-20 Foivos I. Diakogiannis , François Waldner , Peter Caccetta

Spiking Neural Networks (SNNs) are well-suited for processing event streams from Dynamic Visual Sensors (DVSs) due to their use of sparse spike-based coding and asynchronous event-driven computation. To extract features from DVS objects,…

计算机视觉与模式识别 · 计算机科学 2024-09-20 Peng Zheng , Qian Zhou

Image dehazing, a pivotal task in low-level vision, aims to restore the visibility and detail from hazy images. Many deep learning methods with powerful representation learning capability demonstrate advanced performance on non-homogeneous…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Wei Dong , Han Zhou , Ruiyi Wang , Xiaohong Liu , Guangtao Zhai , Jun Chen

This paper addresses the challenge of establishing a bridge between deep convolutional neural networks and conventional object detection frameworks for accurate and efficient generic object detection. We introduce Dense Neural Patterns,…

计算机视觉与模式识别 · 计算机科学 2014-04-17 Will Y. Zou , Xiaoyu Wang , Miao Sun , Yuanqing Lin

We present Neural Descriptor Fields (NDFs), an object representation that encodes both points and relative poses between an object and a target (such as a robot gripper or a rack used for hanging) via category-level descriptors. We employ…

Low-light image enhancement is a classical computer vision problem aiming to recover normal-exposure images from low-light images. However, convolutional neural networks commonly used in this field are good at sampling low-frequency local…

计算机视觉与模式识别 · 计算机科学 2022-09-19 Yunliang Zhuang , Zhuoran Zheng , Chen Lyu